Relevant bibliographies by topics / Environmental aspects of Inorganic compounds

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Environmental aspects of Inorganic compounds'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Environmental aspects of Inorganic compounds.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Environmental aspects of Inorganic compounds"

1

Mutere, Dr Olga. "Editorial: Managing the Microbial Activity in Food and Environmental Biotechnologies." Open Biotechnology Journal 9, no. 1 (June 26, 2015): 30. http://dx.doi.org/10.2174/1874070701509010030.

Full text
Abstract:
The present issue embraces a broad spectrum of studies focused on applied or potentially applied aspects of microbiology and biotechnology. The papers reflect current scientific and technological investigations, which were performed in Latvia, Lithuania, Estonia, Sweden. Most of them are interdisciplinary, i.e., the expertises in microbiology, biochemistry, chemistry, veterinary, physics, engineering and other fields were applied. Probiotic lactic acid bacteria were tested for their antagonistic activity against mastitis causing bacteria. Three papers are focused on optimization of fermentation processes, using maize silage and acid whey in anaerobic processes, barley and pea fibers as well as lupine seeds for obtaining biologically active compounds. Wastewater treatment processes are represented by studies on the use of pink bark as a sorbent of nitroaromatic compounds; as well as biodegradation of phenols in pharmaceutical wastewaters and combination of nitrification and phosphorous accumulation processes. Newly developed inorganic carriers for solid state and submerged fermentations were tested, e.g., ceramic and alkali-activated beads. The review paper covers basic processes of phytoremediation with special emphasis on rhizoremediation and plant-microbe interactions in a plant–assisted biodegradation in soils and treatment wetlands. Methodological aspects were discussed, in particular, the use of Fourier transform infrared spectroscopy in monitoring the sorption and degradation products in wastewaters. A new yeast based test system for rapid evaluation of the effects of various compounds on eukaryotic cells was suggested. Hopefully, you will find the papers included in this issue, interesting and useful.
APA, Harvard, Vancouver, ISO, and other styles
2

Ejeromedoghene, Onome, Mary Nnyia, Charles Okoye, Abiodun Oladipo, and Ebube Anyaebosim. "Environmental Decontamination Using Transition Metal Dichalcogenides Based Materials: A Review." Journal of Materials & Environmental Sustainability Research 2, no. 1 (March 7, 2022): 1–18. http://dx.doi.org/10.55455/jmesr.2022.001.

Full text
Abstract:
The frequent release of toxic compounds into the environment has caused substantial pollution of different aspects of the ecosystem. Thus, the need for suitable materials for environmental remediation is in high demand. Although many 2D materials with remarkable properties have been synthesized for the remediation of toxic pollutants of organic and inorganic origin, transition metal dichalcogenides (TMDs) have gathered extensive recognition lately, owing to their intriguing photocatalytic properties and tunable functionality that offers promising prospects for the decontamination, degradation, adsorption, and removal of these toxic pollutants. Therefore, this review provides the recent advancement of photocatalytic TMDs and the mechanism of their performance towards environmental remediation. Also, insights on new perspectives were highlighted.
APA, Harvard, Vancouver, ISO, and other styles
3

Mohapatra, Bidyut R., W. Douglas Gould, Orlando Dinardo, and David W. Koren. "An Overview of the Biochemical and Molecular Aspects of Microbial Oxidation of Inorganic Sulfur Compounds." CLEAN - Soil, Air, Water 36, no. 10-11 (November 2008): 823–29. http://dx.doi.org/10.1002/clen.200700213.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Pohjanvirta, Raimo, and Matti Viluksela. "Novel Aspects of Toxicity Mechanisms of Dioxins and Related Compounds." International Journal of Molecular Sciences 21, no. 7 (March 28, 2020): 2342. http://dx.doi.org/10.3390/ijms21072342.

Full text
Abstract:
Dioxins and related compounds are common environmental contaminants. Although their levels have gone down, they are still of concern, in particular regarding developmental toxicity. The adverse effects of these compounds are mediated by the aryl hydrocarbon receptor (AHR), whose canonical signaling pathway has been unveiled in fair detail. The alternative (non-genomic) pathways are much more obscure. AHR has also proven to be a master regulator of numerous physiological phenomena, which has led to the search of selective AHR modulators with low toxicity. Papers of this Special Issue address the developmental toxicity of dioxins and related compounds as well as selective modulators of AHR and both its canonical and alternative signaling pathways. In addition, new optical and stereoscopic methods for the detection of dioxins are presented. As a whole, this Special Issue provides an up-to-date view on a wide variety of aspects related to dioxin toxicity mechanisms from both original research articles and reviews.
APA, Harvard, Vancouver, ISO, and other styles
5

Gospodarek, Milena, Piotr Rybarczyk, Bartosz Szulczyński, and Jacek Gębicki. "Comparative Evaluation of Selected Biological Methods for the Removal of Hydrophilic and Hydrophobic Odorous VOCs from Air." Processes 7, no. 4 (April 1, 2019): 187. http://dx.doi.org/10.3390/pr7040187.

Full text
Abstract:
Due to increasingly stringent legal regulations as well as increasing social awareness, the removal of odorous volatile organic compounds (VOCs) from air is gaining importance. This paper presents the strategy to compare selected biological methods intended for the removal of different air pollutants, especially of odorous character. Biofiltration, biotrickling filtration and bioscrubbing technologies are evaluated in terms of their suitability for the effective removal of either hydrophilic or hydrophobic VOCs as well as typical inorganic odorous compounds. A pairwise comparison model was used to assess the performance of selected biological processes of air treatment. Process efficiency, economic, technical and environmental aspects of the treatment methods are taken into consideration. The results of the calculations reveal that biotrickling filtration is the most efficient method for the removal of hydrophilic VOCs while biofilters enable the most efficient removal of hydrophobic VOCs. Additionally, a simple approach for preliminary method selection based on a decision tree is proposed. The presented evaluation strategies may be especially helpful when considering the treatment strategy for air polluted with various types of odorous compounds.
APA, Harvard, Vancouver, ISO, and other styles
6

Balestrini, Raffaella, Cecilia Brunetti, Maria Cammareri, Sofia Caretto, Valeria Cavallaro, Eleonora Cominelli, Monica De Palma, et al. "Strategies to Modulate Specialized Metabolism in Mediterranean Crops: From Molecular Aspects to Field." International Journal of Molecular Sciences 22, no. 6 (March 12, 2021): 2887. http://dx.doi.org/10.3390/ijms22062887.

Full text
Abstract:
Plant specialized metabolites (SMs) play an important role in the interaction with the environment and are part of the plant defense response. These natural products are volatile, semi-volatile and non-volatile compounds produced from common building blocks deriving from primary metabolic pathways and rapidly evolved to allow a better adaptation of plants to environmental cues. Specialized metabolites include terpenes, flavonoids, alkaloids, glucosinolates, tannins, resins, etc. that can be used as phytochemicals, food additives, flavoring agents and pharmaceutical compounds. This review will be focused on Mediterranean crop plants as a source of SMs, with a special attention on the strategies that can be used to modulate their production, including abiotic stresses, interaction with beneficial soil microorganisms and novel genetic approaches.
APA, Harvard, Vancouver, ISO, and other styles
7

Reverberi, Andrea Pietro, Valery Pavlovic Meshalkin, Oleg B. Butusov, Tamara B. Chistyakova, Maurizio Ferretti, Anna Maria Cardinale, and Bruno Fabiano. "Organic and Inorganic Biocidal Energetic Materials for Agent Defeat Weapons: An Overview and Research Perspectives." Energies 16, no. 2 (January 6, 2023): 675. http://dx.doi.org/10.3390/en16020675.

Full text
Abstract:
A critical survey concerning biocidal energetics is proposed according to a classification depending on their chemical structure. The need of optimizing the performances of such compounds is an important target for the inertization of biological weapons, requiring a synergy between the thermal effects of combustion/detonation with the biocidal effects of reaction products released into the environment. The main physicochemical aspects related to the synthesis technique, the thermodynamic variables and the antimicrobial activity have been discussed and compared. In particular, different kinds of biocides have been taken into account, with particular attention to the role of iodine as one of the most promising and eco-friendly chemical species to this purpose, in line with the paradigms of environmental protection and the rational utilization of chemicals. Furthermore, the protocols adopted to assess the effectiveness of biocidal agents have been thoroughly examined according to the recent studies proposed by some of the most reputable research groups in the field. Finally, some insights for future investigations are proposed.
APA, Harvard, Vancouver, ISO, and other styles
8

Liu, Quanyi, Donghui Wang, Zekun Li, Zhifa Li, Xiaoliang Peng, Chuanbang Liu, Yu Zhang, and Penglun Zheng. "Recent Developments in the Flame-Retardant System of Epoxy Resin." Materials 13, no. 9 (May 6, 2020): 2145. http://dx.doi.org/10.3390/ma13092145.

Full text
Abstract:
With the increasing emphasis on environmental protection, the development of flame retardants for epoxy resin (EP) has tended to be non-toxic, efficient, multifunctional and systematic. Currently reported flame retardants have been capable of providing flame retardancy, heat resistance and thermal stability to EP. However, many aspects still need to be further improved. This paper reviews the development of EPs in halogen-free flame retardants, focusing on phosphorus flame retardants, carbon-based materials, silicon flame retardants, inorganic nanofillers, and metal-containing compounds. These flame retardants can be used on their own or in combination to achieve the desired results. The effects of these flame retardants on the thermal stability and flame retardancy of EPs were discussed. Despite the great progress on flame retardants for EP in recent years, further improvement of EP is needed to obtain numerous eco-friendly high-performance materials.
APA, Harvard, Vancouver, ISO, and other styles
9

Jafar Mazumder, Mohammad A. "A Review of Green Scale Inhibitors: Process, Types, Mechanism and Properties." Coatings 10, no. 10 (September 28, 2020): 928. http://dx.doi.org/10.3390/coatings10100928.

Full text
Abstract:
In the present time, more often, it has been seen that scaling has grown as widely and caused problems in the oilfield industry. Scaling is the deposition of various salts of inorganic/organic materials due to the supersaturation of salt-water mixtures. Many works have been proposed by researchers using different methods to solve the problem, of which scale inhibition is one of them. The scale inhibitors, particularly for antiscaling, have derived from natural and synthetic polymers. Among different polymers, inorganic and organic compounds (polyphosphates, carboxylic acid, ethylenediaminetetraacetic acid (EDTA), etc.) can effectively manage the oilfield scales of which many are toxic and expansive. Scale inhibitors of alkaline earth metal carbonate and sulfates and transition metal sulfide are commonly used in oilfield applications. Scale inhibition of metallic surfaces is an essential activity in technical, environmental, economic, and safety purposes. Scale inhibitors containing phosphorus appear to have significant achievements in the inhibition process despite its toxicity. However, phosphorus-based inhibitors can serve as supplements prompting eutrification difficulties. Besides these increasing environmental concerns, green scale inhibitors are renewable, biodegradable, and ecologically acceptable that has been used to prevent, control, and retard the formation of scale. Considering the facts, this review article summarized the concept of scale, various green scale inhibitors, types, mechanisms, comparative performance, significance, and future aspects of green scale inhibitors, which will shed light and be helpful for the professionals working in the oil and gas industries.
APA, Harvard, Vancouver, ISO, and other styles
10

Ortega-Requena, Salvadora, Claudia Montiel, Fuensanta Máximo, María Gómez, María Dolores Murcia, and Josefa Bastida. "Esters in the Food and Cosmetic Industries: An Overview of the Reactors Used in Their Biocatalytic Synthesis." Materials 17, no. 1 (January 4, 2024): 268. http://dx.doi.org/10.3390/ma17010268.

Full text
Abstract:
Esters are versatile compounds with a wide range of applications in various industries due to their unique properties and pleasant aromas. Conventionally, the manufacture of these compounds has relied on the chemical route. Nevertheless, this technique employs high temperatures and inorganic catalysts, resulting in undesired additional steps to purify the final product by removing solvent residues, which decreases environmental sustainability and energy efficiency. In accordance with the principles of “Green Chemistry” and the search for more environmentally friendly methods, a new alternative, the enzymatic route, has been introduced. This technique uses low temperatures and does not require the use of solvents, resulting in more environmentally friendly final products. Despite the large number of studies published on the biocatalytic synthesis of esters, little attention has been paid to the reactors used for it. Therefore, it is convenient to gather the scattered information regarding the type of reactor employed in these synthesis reactions, considering the industrial field in which the process is carried out. A comparison between the performance of the different reactor configurations will allow us to draw the appropriate conclusions regarding their suitability for each specific industrial application. This review addresses, for the first time, the above aspects, which will undoubtedly help with the correct industrial implementation of these processes.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Environmental aspects of Inorganic compounds"

1

Feng, Xiao Yi. "A survey of inorganic chemical pollution in the Bottelary River, Cape Town." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&amp.

Full text
Abstract:
Chemical pollution of freshwater is a worldwide environmental problem
eutrophication, heavy metals and salinity are amongst the most widely used indicators of pollution. The aim of this study was to assess the status of nutrients, heavy metals and salinity, and the seasonal variation int he Bottelary River.
APA, Harvard, Vancouver, ISO, and other styles
2

Babecki, Ryszard. "Aspects of the coordination chemistry of betaketophosphoryl compounds." Thesis, Staffordshire University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278915.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Song, Weining. "Some aspects of the utilization of inorganic nitrogen compounds and carbon compounds by "Nitrobacter hamburgensis" /." Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09A/09as724.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Yuan, Tao 1968. "Dechlorination of environmentally recalcitrant chlorinated aromatic compounds." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79208.

Full text
Abstract:
Chlorinated aromatic compounds are an important group of compounds. Many of them have been produced in large quantities and they are indispensable to technological and societal benefits. But regulatory agencies have tightened regulations on the use and release of chlorinated aromatic compounds because of the scientific understanding of their toxicity, persistence, behavior in the environment and their potential to cause adverse effects on the ecosystem and human health.
Pentachlorophenol (PCP), octachloronaphthalene and decachlorobiphenyl are all highly chlorinated aromatic compounds, of which, PCP has been used mainly as a biocide. Octachloronaphthalene and decachlorobiphenyl don't have practical use, but their congeners have been used widely as chemicals in industry. These compounds are toxic, recalcitrant and bio-accumulated within organisms. As the conventional treatment, incineration of these compounds can cause more serious problems, so that suitable alternatives need to be developed for their detoxification.
When compared with biodegradation or the thermal treatment of these compounds, chemical degradations have several merits. (Abstract shortened by UMI.)
APA, Harvard, Vancouver, ISO, and other styles
5

Amat, N. A. S. "Some aspects of the analytical and environmental chemistry of silver." Thesis, University of Reading, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372563.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Jang, Eunseok. "Aspects of the chemistry of tin(IV) chalcogenide cyclic compounds containing sterically demanding amido ligands." Thesis, University of Sussex, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357883.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Kabir, Anwar. "Dechlorination of chlorinated organic compounds by zero-valent and bimetallic mixture." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=31246.

Full text
Abstract:
Organochlorine (OC) compounds that include several pesticides as well as an array of industrial chemicals were very efficacious for their intended use but were also characterized by deleterious environmental impacts when released either intentionally or inadvertently. Their lipophilic nature, long persistence in the environment and threat to human health caused all the developed countries to ban the production of these chemicals as well as restricted the use of formulations containing these material for food production.
A number of scientists have become involved in the development of intentional degradation methods/techniques for these compounds using zero-valent metals or bimetallic mixtures. To date, there is no single, simple and continuous procedure available to completely dechlorinate lindane or pentachlorophenol (PCP). This work describes the complete dechlorination of lindane and pentachlorophenol by zero-valent Zn, Fe and Fe/Ag bimetallic mixture as well as a supercritical fluid extraction technique for a more efficient mass transfer of the substrates to the surfaces of the metal catalyst. The dechlorination reaction occurs on the surface of metal particles with the removal of all the chlorine atoms from lindane and PCP in a matter of minute, and yields completely dechlorinated hydrocarbon molecules and chloride as products. (Abstract shortened by UMI.)
APA, Harvard, Vancouver, ISO, and other styles
8

Carefoot, Janna. "Phosphorous leaching from coarse-textured soils amended with inorganic or organic fertilizers." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=33725.

Full text
Abstract:
Non-point source pollution of surface waters with phosphorous (P) transported from agricultural soils has emerged as a major environmental issue in the last decade. Regulations limiting P accumulation in surface soils have been established to protect surface water quality. Yet, little information is available on the quantities of P that may leach through soils and the factors influencing P leaching in agricultural soils. One important factor may be the type of fertilizer P applied, since it is known that P solubility varies among fertilizer sources. The purpose of this thesis was to quantify P leaching in soils amended with inorganic and organic fertilizers.
In a field study, we found that the fertilizer P source (triple superphosphate, composted cattle manure, or a mixture of the two) did not affect soil test P concentration, the degree of soil P saturation, or P leaching in a sandy-loam soil. The soil test P level in the 0--15-cm depth (146 mg P kg -1) exceeded the critical limit of 66-mg kg-1 established in Quebec, and ortho-P and DOP concentrations in leachates collected from piezometers were generally higher than the provincial water quality standard of 0.03 mg P L-1. If transported from our study site, P leached through this coarse-textured soil could pose a threat to groundwater and surface water quality.
These findings were verified in the laboratory with two coarse-textured soils. We found that more NO3-N and DON were leached from soils receiving inorganic N and P fertilizers than composted cattle manure, but the amounts of ortho-P and DOP leached were not affected by fertilizer sources. In coarse-textured soils, the quantities of P leached can be substantial, but depends more on soil characteristics than the fertilizer P source.
APA, Harvard, Vancouver, ISO, and other styles
9

Turoczy, Nicholas John, and mikewood@deakin edu au. "Adsorption and voltammetry of butyltin compounds." Deakin University, 1994. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20050915.154112.

Full text
Abstract:
The adsorption of tributyltin onto materials commonly used for the construction of sampling and analytical equipment from aqueous solutions of varying ionic composition has been examined. The adsorption appears to be controlled by non-polar interactions between tributyltin and the surface involved. Since the speciation and hence polarity of tributyltin is affected by the ionic composition of the medium, the extent of adsorption is affected by the salinity and pH of a sample. The adsorption is rapid and, unless strategies are adopted to eliminate its effects, may render analytical results invalid. The electrochemistry of tributyltin, dibutyltin and monobutyltin, individually and in mixtures, has been investigated in aqueous media at mercury electrodes. The basic electrochemistry of each compound is summarised by the reaction BunSn (4-n)+ + (4-n)e- right left harpoons BunSn where n is the number of butyl groups attached to the tin atom. However, the electrochemistry of each compound is largely confined to the surface of the mercury electrode, and the simplicity of the above reaction is disrupted by polymerisation reactions and by butyl exchange processes occurring with the mercury electrode. When mixtures of butyltin compounds are present, the various processes that occur for each individual compound interfere with each other. A direct voltaminetric method for the determination of butyltin compounds in natural waters is therefore probably not possible.
APA, Harvard, Vancouver, ISO, and other styles
10

Ostertag, Sonja. "Estimated dietary exposure to perfluorinated compounds in Canada." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112549.

Full text
Abstract:
Perfluorinated carboxylates (PFCAs), sulfonates (PFSs) and perfluoroalkylsulfonamides (PFOSAs) have been detected in whole blood and serum of non-occupationally exposed humans, yet sources of exposure have not been fully elucidated. The objectives of this study were to estimate dietary exposure to perfluorooctane sulfonate (PFOS), PFCAs (C7--C 11) and fluorotelomer unsaturated carboxylates (FTUCAs) for the general Canadian and Inuit populations prior to the phase-out of perfluorooctyl-sulfonyl production by 3M and voluntary reductions in PFOA emissions under the PFOA stewardship program. PFCs were measured in 65 archived composite food samples prepared for the 1998 Canadian Total Diet Study (TDS) and 68 archived traditional foods from Nunavut using a newly developed methanol extraction combined with a solid phase extraction clean up. Dietary exposure was estimated using food intake data available from studies carried out between 1997 and 1998 in southern Canada and Nunavut.
PFCs were detected in eight composite food samples from the Canadian TDS and in 61 traditional food samples. Elevated concentrations of PFCs were found in caribou liver (6.2+/-5.5 ng/g), ringed seal liver (7.7, 10.2 ng/g), polar bear meat (7.0 ng/g), beluga meat (7.0, 5.8 ng/g), luncheon meats (5.02 ng/g), cookies (2.7 ng/g), processed cheese (2.1 ng/g) and peppers (1.8 ng/g). Low levels of total PFCs (<1.5 ng/g) were measured in 41 traditional foods including: meat (caribou, ptarmigan, snow goose, bearded seal, walrus, black duck), berries, and fish (lake trout, arctic char). PFCs were not detected in beverages, unprocessed meats, breads, cereals and fruits from the TDS composite samples analyzed.
The ranges of estimated daily exposure to PFCs were between 2 and 59 ng-person-1 and 210 to 610 ng-person-1 for average Canadians and Inuit in Nunavut respectively. There were no statistically significant differences in mean PFC exposure levels for different age and gender groups in the general Canadian population. Inuit men in the 41 to 60 year old age group had statistically significantly higher estimated daily exposure to PFCs (p<0.05) than younger men and women from the same age group. This higher exposure was associated with the consumption of beluga muktuk, caribou liver and bearded seal intestine.
Traditional foods contributed a higher percentage to PFC exposure than market foods in all age and gender groups for the Inuit population. In general, caribou meat, arctic char meat and cookies contributed most to dietary exposure for Inuit, with caribou flesh contributing 43 to 75 percent to daily PFC dietary exposure. Dietary exposure for the general Canadian population was associated with the consumption of cakes and cookies, processed cheese, and regular cheese.
Levels of dietary exposure to PFCs estimated in these studies do not pose any significant health risk to either population based on current toxicological information.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Environmental aspects of Inorganic compounds"

1

Howe, Paul. Tin and inorganic tin compounds. Geneva: World Health Organization, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Howe, Paul. Tin and inorganic tin compounds. Geneva: World Health Organization, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

H, Kim James, Gibb Herman J, Howe Paul D, Sheffer Marla, United Nations Environment Programme, International Labour Organisation, Inter-Organization Programme for the Sound Management of Chemicals., and World Health Organization, eds. Cobalt and inorganic cobalt compounds. Geneva: World Health Organization, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

G, Seiler Hans, Sigel Helmut, and Sigel Astrid, eds. Handbook on toxicity of inorganic compounds. New York: Dekker, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

O'Neill, Peter. Environmental chemistry. 3rd ed. London: Blackie Academic & Professional, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Programme, United Nations Environment, International Labour Organisation, World Health Organization, Inter-Organization Programme for the Sound Management of Chemicals., and International Program on Chemical Safety., eds. Elemental mercury and inorganic mercury compounds: Human health aspects. Geneva: World Health Organization, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Iburg, Joachim. Messung und Interpretation der räumlichen, zeitlichen und witterungsabhängigen Variation der anorganischen Komponenten in luftgetragenen Stäuben. Frankfurt/M: Wissenschafts-Verlag W. Maraun, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Nordrhein-Westfalen, Landesumweltamt, and North-Rhine-Westphalia (Germany). Ministerium für Umwelt, Raumordnung und Landwirtschaft., eds. Mobilität anorganischer Schadstoffe in Böden Nordrhein-Westfalen: Lösliche, mobile, mobilisierbare und gesamte Elementgehalte in Böden und Beziehungen zu Bodeneigenschaften und Elementgehalten in Pflanzen. Essen: Das Landesumweltamt, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ti͡apkina, G. V. Kolichestvennoe opredelenie neorganicheskikh mikroprimesnykh ėlementov v zhidkikh sredakh. Chernogolovka: In-t khim. fiziki AN SSSR, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Richard, Jack. Investigation of background inorganic and organic arsenic in four Washington lakes. Olympia, WA: Washington State Dept. of Ecology, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Environmental aspects of Inorganic compounds"

1

Vučinić, Slavica, Biljana Antonijević, and Dragica Brkić. "Occupational and Environmental Aspects of Organophosphorus Compounds." In Basic and Clinical Toxicology of Organophosphorus Compounds, 213–44. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-5625-3_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Potgieter-Vermaak, S., R. Van Grieken, and J. H. Potgieter. "Integrated analytical techniques for analysing individual environmental particles." In Spectroscopic Properties of Inorganic and Organometallic Compounds, 123–40. Cambridge: Royal Society of Chemistry, 2012. http://dx.doi.org/10.1039/9781849734899-00123.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Pardo, Samantha, Mauricio Pérez-Albornoz, David Morales-Pérez, Moises Bustamante-Torres, and Emilio Bucio. "Microbial Biostimulants for Bioremediation of Organic and Inorganic Compounds." In Microbial Biostimulants for Sustainable Agriculture and Environmental Bioremediation, 123–46. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003188032-10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Kadish, Karl M., and Dominique Dubois. "Practical Aspects of Electrochemistry and Applications Towards the Solving of Chemical Problems." In Molecular Electrochemistry of Inorganic, Bioinorganic and Organometallic Compounds, 603–13. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1628-2_56.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

den Exter, Marcel J., Wim G. Haije, and Jaap F. Vente. "Viability of ITM Technology for Oxygen Production and Oxidation Processes: Material, System, and Process Aspects." In Inorganic Membranes for Energy and Environmental Applications, 27–51. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/978-0-387-34526-0_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Kirk, Kenneth L. "Persistent Polyhalogenated Compounds: Biochemistry, Toxicology, Medical Applications, and Associated Environmental Issues." In Biochemistry of the Elemental Halogens and Inorganic Halides, 191–238. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4684-5817-6_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Abkenar, Shiva Dehghan, and Morteza Hosseini. "Carbon Dots in Environmental Remediation: Removal of Inorganic Compounds and Many Other Complex Compounds." In ACS Symposium Series, 227–57. Washington, DC: American Chemical Society, 2024. http://dx.doi.org/10.1021/bk-2024-1465.ch011.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Keller, Maureen D., and Wendy Korjeff-Bellows. "Physiological Aspects of the Production of Dimeyhtlsulfoniopropionate (DMSP) by Marine Phytoplankton." In Biological and Environmental Chemistry of DMSP and Related Sulfonium Compounds, 131–42. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4613-0377-0_12.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Geraldes, Carlos F. G. C., and M. Margarida C. A. Castro. "Complexes of Monosaccharides with Metal Ions: Some Bioinorganic and Environmental Inorganic Chemistry Aspects." In Metal Speciation in the Environment, 105–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-74206-4_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Revelsky, I. A., Y. S. Yashin, A. I. Revelsky, I. N. Glazkov, and O. V. Napalkova. "Fast Screening of Water and Organic Solution Samples for Polychlorinated Compounds: Microliquid Extraction and GC/MS." In Environmental Aspects of Converting CW Facilities to Peaceful Purposes, 109–13. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0508-1_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Environmental aspects of Inorganic compounds"

1

Punanova, Svetlana. "ORE CONCENTRATIONS OF METALS IN NAPHTHIDES OF HYPERGENESIS ZONE: ASSESSMENT AND ENVIRONMENTAL ASPECT." In GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b1/v2/17.

Full text
Abstract:
The study examines the formation of secondary-altered crude oils associated with the processes of modern or ancient hypergenesis. As a result of geological processes during intense upward movement of the earth's crust, oil undergoes physical weathering, inorganic oxidation, washing out with water, biodegradation and sulfurization, and turn into heavy oils and hard bitumen. In zones of hypergenesis, the loss of light fractions occurs and the absolute concentration of trace elements (TE) associated with resinous-asphaltene components, such as V, Ni, Co, Mo, Cr, Cu, etc. sharply increases. In addition, oils absorb elements of variable valence (V, Fe, U) from low-salinity stratal waters. As a result of experimental studies on the interaction of oils with low mineralization waters, which are characteristic of hypergenesis zones, leaching of some elements (e.g., Zn) from oils and absorption of others from contacting waters (for example, concentrations of newly-formed organometallic compounds V and Fe increased by 1.3-12 times) were found. The author utilized the method of neutron-activation analysis to study the content of TE in oils and natural bitumens of the Volga-Ural, Timan-Pechora, Kazakhstan, Tajikistan, and etc. Ore-level concentration values were found, for example: 180-1162 ppm for V and up to 100 ppm for Ni in the oils of the Melekess depression in Tatarstan, and 940 ppm for V and 130 ppm for Ni in the oils of Kazakhstan deposits. Classification of oils by the content of “biogenic” elements V, Ni, Fe and by physical and chemical properties revealed significant differences of hypergene-altered oils in the general cycle of genesis of naphthides. Deposits of secondarily-altered oils are found in a wide stratigraphic range in oil and gas basins of various geostructural types in traps of the combined morphology – lithologically and tectonically shielded. During the development of oil deposits that contain high concentrations of TE, it is necessary to take into account ecological aspects. The environmental aspect is due to the fact that many metals contained in oils – V, Ni, Cd, As, Hg, U, etc. belong to highly toxic compound chemicals.
APA, Harvard, Vancouver, ISO, and other styles
2

Denton, Mark S., and Mercouri G. Kanatzidis. "Innovative Highly Selective Removal of Cesium and Strontium Utilizing a Newly Developed Class of Inorganic Ion Specific Media." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16221.

Full text
Abstract:
Highly selective removal of Cesium and Strontium is critical for waste treatment and environmental remediation. Cesium-137 is a beta-gamma emitter and Strontium-90 is a beta emitter with respective half-lives of 30 and 29 years. Both elements are present at many nuclear sites. Cesium and Strontium can be found in wastewaters at Washington State’s Hanford Site, as well as in wastestreams of many Magnox reactor sites. Cesium and Strontium are found in the Reactor Coolant System of light water reactors at nuclear power plants. Both elements are also found in spent nuclear fuel and in high-level waste (HLW) at DOE sites. Cesium and Strontium are further major contributors to the activity and the heat load. Therefore, technologies to extract Cesium and Strontium are critical for environmental remediation waste treatment and dose minimization. Radionuclides such as Cesium-137 and Strontium-90 are key drivers of liquid waste classification at light water reactors and within the DOE tank farm complexes. The treatment, storage, and disposal of these wastes represents a major cost for nuclear power plant operators, and comprises one of the most challenging technology-driven projects for the DOE Environmental Management (EM) program. Extraction technologies to remove Cesium and Strontium have been an active field of research. Four notable extraction technologies have been developed so far for HLW: solvent extraction, prussian blue, crystalline silicotitanate (CST) and organic ion-exchangers (e.g., resorcinol formaldehyde and SuperLig). The use of one technology over another depends on the specific application. For example, the waste treatment plant (WTP) at Hanford is planning on using a highly-selective organic ion-exchange resin to remove Cesium and Strontium. Such organic ion-exchangers use molecular recognition to selectively bind to Cesium and Strontium. However, these organic ion-exchangers are synthesized using multi-step organic synthesis. The associated cost to synthesize organic ion-exchangers is prohibitive and seriously limits the scope of applications for organic ion-exchangers. Further issues include resin swelling, potential hydrogen generation and precluding final disposal by vitrification without further issues. An alternative to these issues of organic ion-exchangers is emerging. Inorganic ion-exchangers offer a superior chemical, thermal and radiation stability which is simply not achievable with organic compounds. They can be used to remove both Cesium as well as Strontium with a high level of selectivity under a broad pH range. Inorganic ion-exchangers can operate at acidic pH where protons inhibit ion exchange in alternative technologies such as CST. They can also be used at high pH which is typically found in conditions present in many nuclear waste types. For example, inorganic ion-exchangers have shown significant Strontium uptake from pH 1.9 to 14. In contrast to organic ion-exchangers, inorganic ion-exchangers are not synthesized via complex multi-step organic synthesis. Therefore, inorganic ion-exchangers are substantially more cost-effective when compared to organic ion-exchangers as well as CST. Selective removal of specified isotopes through ion exchange is a common and proven treatment method for liquid waste, yet various aspects of existing technologies leave room for improvement with respect to both cost and effectiveness. We demonstrate a novel class of inorganic ion-exchangers for the selective removal of cesium and strontium (with future work planned for uranium removal), the first of a growing family of patent-pending, potentially elutable, and paramagnetic ion-exchange materials [1]. These highly selective inorganic ion-exchangers display strong chemical, thermal and radiation stability, and can be readily synthesized from low-cost materials, making them a promising alternative to organic ion-exchange resins and crystalline silicotitanate (CST). By nature, these inorganic media lend themselves more readily to volume reduction (VR) by vitrification without the issues faced with organic resins. In fact, with a simple melting of the KMS-1 media at 650–670 deg. C (i.e., well below the volatilization temperature of Cs, Sr, Mn, Fe, Sb, etc.), a VR of 4:1 was achieved. With true pyrolysis at higher temperatures or by vitrification, this VR would be much higher. The introduction of this new family of highly specific ion-exchange agents has potential to both reduce the cost of waste processing, and enable improved waste-classification management in both nuclear power plants (for the separation of Class A from B/C wastes) and DOE tank farms [for the separation of low level waste (LLW) from high level waste (HLW)]. In conclusion, we demonstrate for the first time a novel inorganic ion-exchanger for the selective removal of Cesium and Strontium. These inorganic ion-exchangers are chemical, thermal and radiation stable. These inorganic ion-exchangers can be synthesized in a cost-effective way which makes them significantly more effective than organic ion-exchange resin and CST. Finally, new thermal options are afforded for their final volume reduction, storage and disposal.
APA, Harvard, Vancouver, ISO, and other styles
3

Thompson, Matthew A., Amir Mohajeri, and Amin Mirkouei. "Environmental and Economic Impacts of Nitrogen Trifluoride at an Idaho Semiconductor Facility." In ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22603.

Full text
Abstract:
Abstract Nitrogen Trifluoride (NF3) is an inorganic compound widely used in the electronics industry for manufacturing various products, such as semiconductors, solar panels, and touch screens. However, NF3 emissions that accumulate in the atmosphere have 17,200 times the global warming potentials of CO2 over a 100-year time horizon. The abatement efficiency for NF3 is high, although some amount of NOx is generated. This study aims to provide economic and environmental impact assessments on the use of NF3. Life cycle assessment method is applied for evaluating environmental aspects. Additionally, a real case study for the Idaho semiconductor facility is used to assess the method and demonstrate the application of this study. The results show that slight reductions in abatement efficiency have dramatic impacts on mitigating greenhouse gas (GHG) emissions. Even small unplanned releases of NF3, either through mechanical failure or human error, have significant environmental impacts, and every reasonable effort should be taken to avoid such incidents. The results also indicate that the cost of abatement is the primary driver of economic impact. It is found that the considerable distance from the chemical plant in Arizona to the point of use in Idaho contributed a minor portion of GHGs associated with the use of NF3. It is also found that contaminants (e.g., SF6 and CF4) within the cylinder potentially have more substantial GHG impacts than the actual NF3, owing in part to the relative ease with which NF3 is destroyed through abatement.
APA, Harvard, Vancouver, ISO, and other styles
4

Holub, Marian, and Magdalena Balintova. "Removal of inorganic compounds from acidic solutions by sorption." In The 9th International Conference "Environmental Engineering 2014". Vilnius, Lithuania: Vilnius Gediminas Technical University Press “Technika” 2014, 2014. http://dx.doi.org/10.3846/enviro.2014.078.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Roslavtseva, S. A., and K. S. Krivonos. "INORGANIC SUBSTANCES AND THEIR EFFECTS ON INSECTS." In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-76.

Full text
Abstract:
The return of interest in the use of inorganic substances as insecticides is associated with the development of resistance to traditional organic insecticides from the classes of organophosphorus compounds (OPs), carbamates and pyrethroids in populations of insect vectors of pathogens. In this regard, we have developed an insecticide based on a mixture of diatomaceous powder (DP) with silica gel, which is recommended primarily for controlling resistant populations of bed bugs, as well as German cockroaches, fleas, and crickets, and a special insecticide (a mixture of DP with boric acid) for controlling German and black cockroaches and crickets.
APA, Harvard, Vancouver, ISO, and other styles
6

ANDRIULAITYTĖ, Ieva, Marina VALENTUKEVIČIENĖ, and Aušra ZIGMONTIENĖ. "Theoretical research of the processes to reduce the concentration of chlorinated compounds with natural fibers." In 12th International Conference “Environmental Engineering”. VILNIUS TECH, 2023. http://dx.doi.org/10.3846/enviro.2023.857.

Full text
Abstract:
Disinfectants based on chlorine are the most commonly applied biocides for public spaces disinfection. Various studies show the use of sodium hypochlorite went up several times during the pandemic. Chlorinated compounds after they enter stormwater react with organic, inorganic and anthropogenic pollutants there and form harmful disinfection by-products. The article aims to present theoretical research of the processes linked to reduce the chlorinated compounds concentrations in stormwater. Research theory is based on the scientific information and the experiments’ results. The equations of mass transfers are used to describe the process. Analysis is focused on the case when chlorinated compounds concentrations in stormwater change depending on mass transfer from solution to filter fiber. Experiments present that after filtration with natural fibers the amount of disinfectants in stormwater decreased approximately 60 percent. The values of mass transfer reveal the efficiency of hemp and peat fibers to transport chlorinated compounds (C22H48ClN). Research found out the values of different filter materials are quite similar: 0.20 Def·106, cm2s–1 (hemp) and 0.19 Def.·106, cm2s-1 (peat).
APA, Harvard, Vancouver, ISO, and other styles
7

Brennecke, Peter W. "Safety-Related Aspects due to the Chemotoxicity of Radioactive Waste to Be Disposed of." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1232.

Full text
Abstract:
Abstract According to the German disposal concept, all radioactive waste has to be emplaced in a repository constructed and operated in deep geological formations. To get a more detailed insight into site-specific safety-related issues, it is meaningful to perform additional investigations into the radiotoxicity and chemotoxicity. Thus, an evaluation including the hazard potential of organic and inorganic substances being the major constituents of waste packages to be disposed of becomes possible. In addition, possible releases via the water path must be investigated and assessed with regard to the safety of a repository during the post-closure phase, i.e. the radiological long-term effects (radionuclide-specific radiation exposures) as well as the possible pollution of near-surface groundwater by organic and inorganic substances. The latter will particularly take into account the principle of concern of section 34 “Reinhaltung” (Keeping Pure) of the Wasserhaushaltsgesetz (WHG – Water Resources Management Act).
APA, Harvard, Vancouver, ISO, and other styles
8

Lee, Heung N., Sang-Hoon Kang, Hong Joo Ahn, Wook Hyun Sohn, and Kwang Yong Jee. "Determination of 35S in Radioisotope Wastes by a Wet Oxidation." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7291.

Full text
Abstract:
The oxidation studies of a sulfur to a sulfate ion by various oxyhalide oxidants in organic (thiourea, methionine) and inorganic (sulfate, thiophosphate) compounds were carried out in an acidic solution. The optimized result of the oxidation reaction was obtained when a bromate compound (BrO3−) as an oxidant and a 3 M HNO3 solvent. The chemical yield for the oxidation of the organic and inorganic sulfur compounds to a sulfate ion was monitored as 80% for thiophosphate, 87% for methionine, and 100% for thiourea and sulfate within 5% RSD. The oxidation of thiourea required at least 1.6 equivalents of the bromate in an acidic solution. In the case of the oxidation of methionine and thiophosphate, the oxidation yield was above 80% if the bromate was used at 20 times that of the substrates. The chemical yield in the paper sample (WypAll) exceeded 100% because of its background sulfur contents (910 ppm). The sulfate ion was quantitatively measured by using GPC and/or LSC counting of 35S followed by precipitates of BaSO4. The interfering nuclides (14C, 32P) were removed in an acidic condition. The minimum detectable activity (MDA) of 35S was found to be 0.1 Bq/g.
APA, Harvard, Vancouver, ISO, and other styles
9

Sone, Tomoyuki, Toshiki Sasaki, and Hiromi Yamaguchi. "Reduction of Radioactive Secondary Waste With Steam Reforming in Treatment of Waste TBP/Dodecane." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7144.

Full text
Abstract:
Waste tributyl phosphate (TBP) and normal dodecane generated from R&D activities on recycle of nuclear fuel has been stored in Japan Atomic Energy Agency (JAEA). If it is incinerated, a large quantity of contaminated phosphorous compounds will be generated as radioactive secondary wastes. The objective of this study is to reduce the generation of the radioactive secondary wastes by the treatment of the waste TBP/dodecane using steam reforming system. We constructed the demonstration scale steam reforming system which consists of a gasification chamber for vaporization of wastes, a metal mesh filter for removal of radioactive nuclides from gasified wastes, a combustion chamber, and scrubbers for removal of phosphorous oxides. We conducted process demonstration tests using waste TBP/dodecane with 0.07 g/L of uranium. We studied the temperature dependence of the gasification ratio of inorganic phosphorus compounds formed by pyrolysis of TBP in the gasification chamber and removal of uranium by the filter. As the results, more than 90% of phosphorus compounds were gasified from the gasification chamber at temperature of 600°C or more, and the uranium concentration in the waste water generated from the off-gas treatment system is under the detection limits. The waste water containing the separated phosphorus compounds can be discharged into the river or the sea as the liquid wastes in which uranium concentration is under the regulatory level. These results show the steam reforming system is effective in the reduction of radioactive secondary waste in the treatment of TBP/dodecane.
APA, Harvard, Vancouver, ISO, and other styles
10

Polito, Aure´lie. "Waste Treatment by Selective Mineral Ion Exchanger." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7340.

Full text
Abstract:
STMI, subsidiary company of the AREVA Group with over 40 years in the D&D business, has been continuously innovating and developing new decontamination techniques, with the objectives of achieving more efficient decontaminations on a growing spectrum of media. In the field of liquid waste treatment, STMI manufactures uses and commercialises selective inorganic ion exchangers (RAN). These are hydrated synthetic inorganic compounds prepared from very pure raw materials. Different types of RANs (POLYAN, OXTAIN, Fe-Cu, Fe-CoK, Si-Fe-CoK) can be used to trap a large number of radioactive elements in contaminated effluents. Different implementations could be applied depending on technical conditions. STMI’s offers consist in building global solution and preliminary design of installation either in dispersed form (batch) or in column (cartridge filtration). Those products are used all over the world not only in the nuclear business (Canada, US, Belgium, France…) but also in other fields. Indeed, it provides competitive solutions to many domains of application especially water pollution control, liquid waste treatment in the nuclear business by decreasing the activity level of waste. The following paper will focus on the theoretical principle of the mineral exchanger, its implementation and the feed back collected by STMI.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Environmental aspects of Inorganic compounds"

1

Akinleye, Taiwo, Idil Deniz Akin, Amanda Hohner, Indranil Chowdhury, Richards Watts, Xianming Shi, Brendan Dutmer, James Mueller, and Will Moody. Evaluation of Electrochemical Treatment for Removal of Arsenic and Manganese from Field Soil. Illinois Center for Transportation, June 2021. http://dx.doi.org/10.36501/0197-9191/21-019.

Full text
Abstract:
Soils containing inorganic compounds are frequently encountered by transportation agencies during construction within the right-of-way, and they pose a threat to human health and the environment. As a result, construction activities may experience project delays and increased costs associated with management of inorganic compounds containing soils required to meet environmental regulations. Recalcitrance of metal-contaminated soils toward conventional treatment technologies is exacerbated in clay or organic content-rich fine-grained soils with low permeability and high sorption capacity because of increased treatment complexity, cost, and duration. The objective of this study was to develop an accelerated in situ electrochemical treatment approach to extract inorganic compounds from fine-grained soils, with the treatment time comparable to excavation and off-site disposal. Three reactor experiments were conducted on samples collected from two borehole locations from a field site in Illinois that contained arsenic (As)(~7.4 mg/kg) and manganese (Mn)(~700 mg/kg). A combination of hydrogen peroxide (H2O2) and/or citrate buffer solution was used to treat the soils. A low-intensity electrical field was applied to soil samples using a bench-scale reactor that resembles field-scale in situ electrochemical systems. For the treatment using 10% H2O2 and citrate buffer solution, average removal of 23% and 8% were achieved for Mn and As, respectively. With 4% H2O2 and citrate buffer, 39% and 24% removal were achieved for Mn and As; while using only citrate buffer as the electrolyte, 49% and 9% removal were achieved for Mn and As, respectively. All chemical regimes adopted in this study reduced the inorganic compound concentrations to below the maximum allowable concentration for Illinois as specified by the Illinois Environmental Protection Agency. The results from this work indicate that electrochemical systems that leverage low concentrations of hydrogen peroxide and citrate buffer can be effective for remediating soils containing manganese and arsenic.
APA, Harvard, Vancouver, ISO, and other styles
2

Shenker, Moshe, Paul R. Bloom, Abraham Shaviv, Adina Paytan, Barbara J. Cade-Menun, Yona Chen, and Jorge Tarchitzky. Fate of Phosphorus Originated from Treated Wastewater and Biosolids in Soils: Speciation, Transport, and Accumulation. United States Department of Agriculture, June 2011. http://dx.doi.org/10.32747/2011.7697103.bard.

Full text
Abstract:
Beneficial use of reclaimed wastewater (RW) and biosolids (BS) in soils is accompanied by large input of sewage-originated P. Prolonged application may result in P accumulation up to levelsBeneficial use of reclaimed wastewater (RW) and biosolids (BS) in soils is accompanied by large input of sewage-originated P. Prolonged application may result in P accumulation up to levels that impair plant nutrition, increase P loss, and promote eutrophication in downstream waters. This study aims to shed light on the RW- and BS-P forms in soils and to follow the processes that determine P reactivity, solubility, availability, and loss in RW and BS treated soils. The Technion group used sequential P extraction combined with measuring stable oxygen isotopic composition in phosphate (δ18OP) and with 31P-NMR studies to probe P speciation and transformations in soils irrigated with RW or fresh water (FW). The application of the δ18OP method to probe inorganic P (Pi) speciation and transformations in soils was developed through collaboration between the Technion and the UCSC groups. The method was used to trace Pi in water-, NaHCO3-, NaOH-, and HCl- P fractions in a calcareous clay soil (Acre, Israel) irrigated with RW or FW. The δ18OP signature changes during a month of incubation indicated biogeochemical processes. The water soluble Pi (WSPi) was affected by enzymatic activity yielding isotopic equilibrium with the water molecules in the soil solution. Further it interacted rapidly with the NaHCO3-Pi. The more stable Pi pools also exhibited isotopic alterations in the first two weeks after P application, likely related to microbial activity. Isotopic depletion which could result from organic P (PO) mineralization was followed by enrichment which may result from biologic discrimination in the uptake. Similar transformations were observed in both soils although transformations related to biological activity were more pronounced in the soil treated with RW. Specific P compounds were identified by the Technion group, using solution-state 31P-NMR in wastewater and in soil P extracts from Acre soils irrigated by RW and FW. Few identified PO compounds (e.g., D-glucose-6-phosphate) indicated coupled transformations of P and C in the wastewater. The RW soil retained higher P content, mainly in the labile fractions, but lower labile PO, than the FW soil; this and the fact that P species in the various soil extracts of the RW soil appear independent of P species in the RW are attributed to enhanced biological activity and P recycling in the RW soil. Consistent with that, both soils retained very similar P species in the soil pools. The HUJ group tested P stabilization to maximize the environmental safe application rates and the agronomic beneficial use of BS. Sequential P extraction indicated that the most reactive BS-P forms: WSP, membrane-P, and NaHCO3-P, were effectively stabilized by ferrous sulfate (FeSul), calcium oxide (CaO), or aluminum sulfate (alum). After applying the stabilized BS, or fresh BS (FBS), FBS compost (BSC), or P fertilizer (KH2PO4) to an alluvial soil, P availability was probed during 100 days of incubation. A plant-based bioassay indicated that P availability followed the order KH2PO4 >> alum-BS > BSC ≥ FBS > CaO-BS >> FeSul-BS. The WSPi concentration in soil increased following FBS or BSC application, and P mineralization further increased it during incubation. In contrast, the chemically stabilized BS reduced WSPi concentrations relative to the untreated soil. It was concluded that the chemically stabilized BS effectively controlled WSPi in the soil while still supplying P to support plant growth. Using the sequential extraction procedure the persistence of P availability in BS treated soils was shown to be of a long-term nature. 15 years after the last BS application to MN soils that were annually amended for 20 years by heavy rates of BS, about 25% of the added BS-P was found in the labile fractions. The UMN group further probed soil-P speciation in these soils by bulk and micro X-ray absorption near edge structure (XANES). This newly developed method was shown to be a powerful tool for P speciation in soils. In a control soil (no BS added), 54% of the total P was PO and it was mostly identified as phytic acid; 15% was identified as brushite and 26% as strengite. A corn crop BS amended soil included mostly P-Fe-peat complex, variscite and Al-P-peat complex but no Ca-P while in a BS-grass soil octacalcium phosphate was identified and o-phosphorylethanolamine or phytic acid was shown to dominate the PO fraction that impair plant nutrition, increase P loss, and promote eutrophication in downstream waters. This study aims to shed light on the RW- and BS-P forms in soils and to follow the processes that determine P reactivity, solubility, availability, and loss in RW and BS treated soils. The Technion group used sequential P extraction combined with measuring stable oxygen isotopic composition in phosphate (δ18OP) and with 31P-NMR studies to probe P speciation and transformations in soils irrigated with RW or fresh water (FW). The application of the δ18OP method to probe inorganic P (Pi) speciation and transformations in soils was developed through collaboration between the Technion and the UCSC groups. The method was used to trace Pi in water-, NaHCO3-, NaOH-, and HCl- P fractions in a calcareous clay soil (Acre, Israel) irrigated with RW or FW. The δ18OP signature changes during a month of incubation indicated biogeochemical processes. The water soluble Pi (WSPi) was affected by enzymatic activity yielding isotopic equilibrium with the water molecules in the soil solution. Further it interacted rapidly with the NaHCO3-Pi. The more stable Pi pools also exhibited isotopic alterations in the first two weeks after P application, likely related to microbial activity. Isotopic depletion which could result from organic P (PO) mineralization was followed by enrichment which may result from biologic discrimination in the uptake. Similar transformations were observed in both soils although transformations related to biological activity were more pronounced in the soil treated with RW. Specific P compounds were identified by the Technion group, using solution-state 31P-NMR in wastewater and in soil P extracts from Acre soils irrigated by RW and FW. Few identified PO compounds (e.g., D-glucose-6-phosphate) indicated coupled transformations of P and C in the wastewater. The RW soil retained higher P content, mainly in the labile fractions, but lower labile PO, than the FW soil; this and the fact that P species in the various soil extracts of the RW soil appear independent of P species in the RW are attributed to enhanced biological activity and P recycling in the RW soil. Consistent with that, both soils retained very similar P species in the soil pools. The HUJ group tested P stabilization to maximize the environmental safe application rates and the agronomic beneficial use of BS. Sequential P extraction indicated that the most reactive BS-P forms: WSP, membrane-P, and NaHCO3-P, were effectively stabilized by ferrous sulfate (FeSul), calcium oxide (CaO), or aluminum sulfate (alum). After applying the stabilized BS, or fresh BS (FBS), FBS compost (BSC), or P fertilizer (KH2PO4) to an alluvial soil, P availability was probed during 100 days of incubation. A plant-based bioassay indicated that P availability followed the order KH2PO4 >> alum-BS > BSC ≥ FBS > CaO-BS >> FeSul-BS. The WSPi concentration in soil increased following FBS or BSC application, and P mineralization further increased it during incubation. In contrast, the chemically stabilized BS reduced WSPi concentrations relative to the untreated soil. It was concluded that the chemically stabilized BS effectively controlled WSPi in the soil while still supplying P to support plant growth. Using the sequential extraction procedure the persistence of P availability in BS treated soils was shown to be of a long-term nature. 15 years after the last BS application to MN soils that were annually amended for 20 years by heavy rates of BS, about 25% of the added BS-P was found in the labile fractions. The UMN group further probed soil-P speciation in these soils by bulk and micro X-ray absorption near edge structure (XANES). This newly developed method was shown to be a powerful tool for P speciation in soils. In a control soil (no BS added), 54% of the total P was PO and it was mostly identified as phytic acid; 15% was identified as brushite and 26% as strengite. A corn crop BS amended soil included mostly P-Fe-peat complex, variscite and Al-P-peat complex but no Ca-P while in a BS-grass soil octacalcium phosphate was identified and o-phosphorylethanolamine or phytic acid was shown to dominate the PO fraction.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Environmental aspects of Inorganic compounds' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography