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Tesi sul tema "Arsenic wastes Environmental aspects"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 31 gennaio 2023

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1

Edvantoro, Bagus Bina. "Bioavailability, toxicity and microbial volatilisation of arsenic in soils from cattle dip sites." Title page, Contents and Abstract only, 2000. http://web4.library.adelaide.edu.au/theses/09A/09ae24.pdf.

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2

Stevens, Brooke Nan. "Bioaccessibility, Bioavailability, and Chemical Speciation of Arsenic in Contaminated Soils and Solid Wastes." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1469101685.

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3

Savoie, Courtney Beth Young. "Arsenic Mobility and Compositional Variability in High-Silica Ash Flow Tuffs." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/1012.

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Volcanic rocks typically have only low to moderate arsenic concentrations, none-the-less, elevated levels of arsenic in ground waters have been associated with pyroclastic and volcaniclastic rocks and sediments in many parts of the world. The potential for arsenic leaching from these deposits is particularly problematic as they often comprise important water-bearing units in volcanic terrains. However, the role that chemical and mineralogical variations play in controlling the occurrence and mobility of arsenic from pyroclastic rocks is largely unexplored. This study uses chemical and X-ray di

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4

Bauer, Elizabeth Nanette. "MODIFICATION OF AN EXISTING BENTHAL MODEL FOR PAPER MILL WASTES." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275443.

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5

Tsai, Yi-Chang. "A quantitative spatial thoroughness methodology for environmental site characterization." Diss., Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/19503.

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6

Woods, William Eric. "Copper migration through petroleum-treated soils." Virtual Press, 1990. http://liblink.bsu.edu/uhtbin/catkey/722463.

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The purpose of the project was to determine the effect of various petroleum amendments on the migration rate of Cu. The petroleum amendments used in this research are frequently added to the soil surface in petroleum landfarming. Such petroleum wastes often contain significant amounts of Cu and other metals.Soil columns were amended with citric acid, used crankcase oil and Illinois crude oil. Each amendment was spiked (treated) with three different concentrations of Cu and each treatment was replicated three times. The columns were leached once per week, for ten weeks, with distilled water aci

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7

Hung, Chien-ho. "Evaluation of leaching mechanisms and long-term leachability of metallic contaminants solidified/stabilized by cement matrices." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20761.

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8

Swarna, Anitha. "Removal of Arsenic Using Iron Coated Limestone." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1342.

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Abstract (sommario):

Arsenic contamination in drinking water is a severe problem worldwide. The best way to prevent hazardous diseases from chronic arsenic exposure is to remove the exposure. Efforts to remediate arsenic in drinking water have taken two tracks. One is to provide surface or shallow well water sources as an alternative to the arsenic contaminated deep wells. Another approach is to remove arsenic from the contaminated water. Different removal technologies like oxidation, chemical coagulation, precipitation, adsorption and others are available. There are problems and benefits associated with each of t

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9

Lesley, Michael Patrick. "The fluxes and fates of arsenic, selenium, and antimony from coal fired power plants to rivers." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180307/unrestricted/lesley%5fmichael%5fp%5f200312%5fms.pdf.

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10

Yang, Yun. "Temperature dependent PCDD/PCDF product distributions from phenols." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20182.

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11

Tlhapane, Keatlaretse Kefilwe. "A case study exploring the level of awareness of NCP Chlorchem's staff of environmental costs associated with hazardous waste." Thesis, Rhodes University, 2014. http://hdl.handle.net/10962/d1015639.

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[Integrative executive summary] NCP Chlorchem (Pty) Ltd manufactures and distributes Chlor alkali products such as chlorine, hydrochloric acid, caustic soda flakes, etc. and in the process generates both hazardous and general waste. Following changes in South African waste management legislation in 2011, the organisation’s waste service provider had to increase the costs associated with the handling of site’s hazardous waste. Top management of NCP Chlorchem (Pty) Ltd requested a meeting with the waste service provider in order to establish the reasons behind the price increase. In that meeting

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12

Lou, Laiqing. "Arsenic uptake, accumulation and tolerance in Chinese brake fern (Pteris vittata L., an arsenic hyperaccumulator) under the influence of phosphate." HKBU Institutional Repository, 2008. http://repository.hkbu.edu.hk/etd_ra/928.

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13

Baker, Scott Alan. "Activated sludge biotreatability of pulp and paper bleach wastes : investigation of bleaching options." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/21647.

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14

Akki, Umesh. "Gas phase formation pathways and mechanisms of polychlorinated dibenzo-p-dioxins and dibenzofurans." Diss., Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/23157.

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15

Uddin, G. M. Saleh. "Groundwater contamination by arsenic in Bangladesh : causes, consequences and solutions." Title page, table of contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09ENV/09envu18.pdf.

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16

Smith, Euan. "Chemistry of arsenic in soils of north-east New South Wales /." Adelaide, 1998. http://web4.library.adelaide.edu.au/theses/09ASOP/09asops646.pdf.

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17

Vaughn, Michelle Lynn. "Internal dose assessment calculations for the proposed low-level radioactive waste disposal facility in the southeast compact." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/17378.

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18

Booker, Randall Sulter Jr. "Microbial reductive dechlorination of hexachloro-1,3-butadiene." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20921.

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19

Leung, Ho Man Homan. "Interactions of arbuscular mycorrhizal fungi with an arsenic hyperaccumulator plant (pteris vittata) on the uptake of arsenic." HKBU Institutional Repository, 2008. http://repository.hkbu.edu.hk/etd_ra/945.

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20

Dodd, Matthew. "Arsenic speciation studies on some marine invertebrates of British Columbia." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28664.

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Abstract (sommario):

Graphite furnace and hydride generation atomic absorption, GFAA and HGAA, techniques have been developed and applied to the determination of arsenic concentrations in some marine invertebrates, mainly bivalves and gastropods, of British Columbia. Total arsenic concentrations in bivalves vary with species, ranging from 0.6-9.1 μg g⁻¹ (wet weight basis). Arsenic concentrations in the bivalve shells show a wider range of 0.1 to 26.3 μg g⁻¹ (dry weight basis). Gastropods show relatively higher arsenic concentrations in the soft tissues, 17.3-48.4 fig μg g⁻¹, and concentrations in the shells range

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21

Smith, Euan. "Chemistry of arsenic in soils of north-east New South Wales / by Euan Smith." Thesis, Adelaide, 1998. http://hdl.handle.net/2440/22476.

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Bibliography: leaves 137-151.<br>xiii, 151 leaves : ill. ; 30 cm.<br>Ten soils from northern New South Wales, Australia, were sampled and assessed for their capacity to sorb arsenate (Asv) in relation to soil properties.<br>Thesis (Ph.D.)--University of Adelaide, Dept. of Soil Science, 1998

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22

Robinson, Janet E. "Hazardous waste treatment and disposal: alternative technologies and groundwater impacts." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/91066.

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Abstract (sommario):

The most important thermal, chemical, physical, and biological methods for treating hazardous wastes and the fate of their land-disposed residues are reviewed and evaluated. Technologies are described as major, minor, and emerging according to their stage of development or application to hazardous waste; major ones include rotary kiln, liquid injection, and cement kiln incineration; neutralization, chemical oxidation-reduction, and ion exchange; filtration, distillation and settling techniques; and activated sludge, aerated lagoon, and landfarming treatment. Emerging technologies include molte

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23

Ricker, Tracy Ryan. "Arsenic in the Soils of Northwest Oregon." PDXScholar, 2013. https://pdxscholar.library.pdx.edu/open_access_etds/927.

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Abstract (sommario):

One hundred and eighty-six soil samples from Northwest Oregon were tested for arsenic content. The highest values measured were 13.9 ppm in the A horizon (site C4) and 20.4 ppm in the B horizon (Site P4). Arsenic was not detected in 28 A horizon samples and 23 B horizon samples. Data are grouped based on the age and rock type of underlying bedrock. Lithologic groups with six or more data points were compared statistically to ascertain if groups are distinct. Analysis of Variance (ANOVA) multiple comparison tests indicate that the arsenic content of the Marine Sediments and Sedimentary Rocks gr

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24

Sorenson, Mary T. "Deterministic vs probabilistic ecological risk assessment modeling at hazardous waste sites : a comparative case study." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/25303.

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25

Mayer, Kate A. "Laboratory chamber experiments simulating in-situ plasma vitrification for geoenvironmental concerns." Thesis, Georgia Institute of Technology, 1996. http://hdl.handle.net/1853/18990.

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26

Ng, Ting-leung Gordon, and 吳庭亮. "An assessment of strategies for the management of plastic bag wastes in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1994. http://hub.hku.hk/bib/B31234392.

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27

Wu, Chuan. "Effects of radial oxygen loss (ROL) on arsenic tolerance, uptake and distribution by rice (Oryza sativa L.)." HKBU Institutional Repository, 2011. http://repository.hkbu.edu.hk/etd_ra/1246.

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28

Momplaisir, Georges-Marie. "Development of analytical methods for the speciation of arsenic in the marine environment." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=40201.

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Abstract (sommario):

Several biologically important arsenic compounds including methylarsonate, trimethylarsine oxide, tetramethylarsonium ion, arsenobetaine and arsenocholine were prepared, in good yields, from sodium arsenite, or dimethylarsinic acid. These organoarsenic compounds together with arsenite, arsenate and dimethylarsinic acid were used as standards for the development of analytical methods for determining the levels of individual arsenic compounds (arsenic speciation) present in natural matrices.<br>Arsenobetaine, arsenocholine and tetramethylarsonium ion were separated by high performance liquid chr

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29

Assemi, Shoeleh 1963. "Use of flow field-flow fractionation for the characterisation of humic substances." Monash University, Dept. of Chemistry, 2000. http://arrow.monash.edu.au/hdl/1959.1/9028.

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30

Hurtado, Heather Ann. "Naturally Occurring Background Levels of Arsenic in the Soils of Southwestern Oregon." PDXScholar, 2015. https://pdxscholar.library.pdx.edu/open_access_etds/2996.

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This study examines the natural background concentrations of arsenic in the soils of southwest Oregon, using new samples in addition to data collected from previous theses (Khandoker, 1997 and Douglas, 1999). The original 213 samples were run by ICP-AES with a reporting limit of 20 ppm, and only three samples had detected values. The original samples were tested again (2013) at a lower reporting limit of 0.2 ppm by ICP-MS, as were 42 new samples (2013), to better ascertain the natural levels of arsenic in undisturbed soils. The aim is to add to the existing DEQ data set, which has been used to

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31

Oxenberg, Tanya Palmateer. "The use of catchboxes to minimize the impact to the environment from testing depleted uranium penetrations." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/18219.

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32

Leung, Oi-kwan Winnie, and 梁愛群. "A preliminary study on the Hong Kong external trade of non-ferrous metal waste (and scrap) and other potentially hazardous wastematerials." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31253180.

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33

Miller, Carla Joan. "Water quality and macroinvertebrate populations of Finley Creek before and after a hazardous waste cleanup." Virtual Press, 1988. http://liblink.bsu.edu/uhtbin/catkey/546147.

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Abstract (sommario):

Water samples and macroinvertebrates were collected from three stations of Finley Creek, Indiana before and after a surface cleanup of an adjacent hazardous waste disposal site. Water quality parameters: iron, total dissolved solids, conductance, hardness, total suspended solids and pH were compared between stations and years. The water quality above the landfill was high but decreased downstream. The water below the disposal site contained high levels of chemicals in both studies. However, the concentrations of chemicals were lower in the water two years after the cleanup.Numbers of macroinve

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34

Chan, Wai Fung. "The roles of arbuscular mycorrhizal fungi in arsenic uptake and tolerance of upland rice." HKBU Institutional Repository, 2011. http://repository.hkbu.edu.hk/etd_ra/1257.

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35

Lake, Bjorn Anders. "The Use of Semipermeable Membrane Devices (SPMDS) for Monitoring Dioxin Levels in Maine Rivers." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/LakeBA2003.pdf.

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36

Kantachote, Duangporn. "The use of microbial inoculants to enhance DDT degradation in contaminated soil." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phk165.pdf.

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37

Mbakwa, Emmanuel Fon. "Accumulation of lead and manganese in soil along the N1 highway in the City of Cape Town after the banning of leaded petrol in South Africa." Thesis, Cape Peninsula University of Technology, 2015. http://hdl.handle.net/20.500.11838/803.

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Thesis submitted in fulfilment of the requirements for the degree Master of Technology: Environmental Health Faculty of Applied Sciences Cape Peninsula University of Technology<br>Soil contamination by metals is a serious environmental problem that has significant implications for human health. Roadside soils have been shown to have considerable contamination due to depositions of metals by vehicles. Metal pollution poses significant environmental concerns because most metals are not biodegradable and often have long half-lives, thus predicating far reaching effects on biological systems, i

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38

Lee, Huk-bun, and 李學斌. "Environmental economics: a framework for assessing the economic impacts of adopting biotechnologies in HongKong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B45013500.

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39

Li, Hui. "The role of arbuscular mycorrhizal fungi (AMF) on the tolerance and accumulation of arsenic in rice (Oryza sativa L.)." HKBU Institutional Repository, 2012. https://repository.hkbu.edu.hk/etd_ra/1409.

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40

Chow, Stephanie Stacey. "Effects of Biogeochemical and Physical Processes on the Transformation of Trace Metals at Oxic-Anoxic Interfaces in Aquatic Systems." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19705.

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Trace metals (e.g. Fe, Mn, Zn, Cu, Cd, Ni) are important micronutrients that have historically been regarded as toxic pollutants rather than essential components of riverine and estuarine environments. The toxicity and behavior of trace metals, in response to physical and biogeochemical processes, are determined by their individual physico-chemical properties. In this dissertation, the vertical transformation of trace metals across oxic-anoxic interfaces was investigated at two sites, a Fe-rich freshwater river with minimal sulfide and an estuary with elevated Mn and H2S concentrations.

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41

Wong, Stephen W. "Reproductive toxicity and bioavailability of arsenic in contaminated artificial and natural soils using the earthworm." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79205.

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High concentrations of arsenic are found near gold-mine tailings. The most common form of arsenic found in soil is arsenate, which is a known toxicant. We used the standardised earthworm reproduction test for the species Eisenia andrei (E. andrei) to study the toxicity and bioavailability of arsenic-contaminated soil. Arsenic is toxic to earthworms as indicated by the decrease in survival and reproduction. Arsenic-spiked artificial soil was more toxic than arsenic-spiked field soil based on total arsenic concentration in soil. Moreover, soil from near mine tailings showed a reduced toxi

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42

Annarapu, Shashidhar. "Thermal Analysis of Binding of Organic Pollutants to Titanium Dioxide." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1338.

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Conventional waste water treatment processes are not completely effective in removing highly stable organic compounds. Photocatalytic degradation on titanium dioxide is a possible alternative technique for many classes of these compounds. Several studies have been done by other researchers to study mechanisms of photocatalytic degradation, which occurs either through direct oxidation by holes or via indirect oxidation by radical messengers. Titanium dioxide can oxidize substrates directly through hole oxidation mechanisms or indirectly through free radical mechanisms. Substrates must bind onto

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43

Gil, Maria Doralice Maciel. "Relações entre fatores socioeconômicos e a geração de resíduos sólidos domiciliares - Vacaria." reponame:Repositório Institucional da UCS, 2016. https://repositorio.ucs.br/handle/11338/1793.

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Uma das grandes preocupações ambientais está relacionada à geração exacerbada de resíduos sólidos no âmbito domiciliar, como decorrência os impactos ambientais ocasionados pelo descarte inadequado dos mesmos. Estudos sobre geração de resíduos sólidos e fatores socioeconômicos são importantes e necessários para o entendimento do poder de consumo da população e sua relação com a poluição ambiental. O objetivo do estudo é analisar a relação que é estabelecida entre a geração dos resíduos sólidos domiciliares e fatores socioeconômicos de dois bairros predominantemente residenciais do município de

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44

Kwok, Hon-chiu, and 郭漢超. "An overview of chemical waste management of printed circuit board manufacturing in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B31253428.

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45

Pasinato, Tatiana Lúcia Strapazzon. "O sistema de produção dos têxteis no Brasil : a legislação e a cadeia do algodão frente à teoria do risco e aos impactos socioambientais." reponame:Repositório Institucional da UCS, 2016. https://repositorio.ucs.br/handle/11338/1418.

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No presente estudo, analisam-se os danos ambientais resultantes do cultivo do algodão, provenientes do hiperconsumismo e dos resíduos sólidos têxteis dessa fibra natural de maior representatividade mundial. Em um primeiro momento, analisou-se a Teoria do Risco, traçada como ponto definidor e fundamental para o decorrer do estudo, e apresentada como adequada para embasar a análise dos riscos e danos ambientais causados pela produção do algodão, pelos seus resíduos e pelo hiperconsumismo. Em um segundo passo, trabalha-se sobre as formas de produção do algodão no Brasil, trazendo-se os benefícios

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46

Haffert, Laura, and n/a. "Metalloid mobility at historic mine and industrial processing sites in the South Island of New Zealand." University of Otago. Department of Geology, 2009. http://adt.otago.ac.nz./public/adt-NZDU20090921.144328.

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Rocks of the South Island of New Zealand are locally enriched in metalloids, namely arsenic (As), antimony (Sb) and boron (B). Elevated levels of As and Sb can be found in sulphide minerals mostly in association with mesothermal gold deposits, whereas B enrichment occurs in marine influenced coal deposits. The mobility of these metalloids is important because they can be toxic at relatively low levels (e.g. for humans >0.01 mg/L of As). Their mobilisation occurs naturally from background weathering of the bedrock. However, mining and processing of coal and gold deposits, New Zealand's most eco

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47

Rinquest, Zainab. "Poultry slaughterhouse wastewater treatment using a static granular bed reactor (Sgbr) coupled with a hybrid sidestream membrane bioreactor." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2638.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2017.<br>An increase in the demand for poultry products coupled with the potable water shortages currently experienced in South Africa (SA), attributed to climate change among other factors, makes it crucial for SA to develop water conservation strategies to minimize potable water consumption by water-intensive industries, such as the poultry industry. The development of innovative wastewater treatment processes is therefore paramount in attempting to counteract the large quantity of wastewater generated as we

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48

Colon, i. Bosch Mireia. "Analytical strategies based on inductively coupled plasma sprectroscopy (ICP) and diffusive gradients in thin fims (DGT) techniques for the assessment of environmental pollution indicators." Doctoral thesis, Universitat de Girona, 2011. http://hdl.handle.net/10803/84050.

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In this thesis, simple methods to determine sulfide at low levels (µg L-1) in aqueous samples and sediments by water free hydrogen sulfide vapor generation using a commercially available vapor generation accessory have been developed. The hydrogen sulfide is then introduced in the ICP-QMS, equipped with an octopole collision/reaction cell which is vented with hydrogen and helium gases, or in the ICP-AES where the optical path between the plasma and the monochromator is purged with nitrogen. Moreover some studies have been conducted for the determination of arsenic by ICP-MS in natural waters w

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49

Patterson, Shane, and University of Lethbridge Faculty of Arts and Science. "The agronomic benefit of pulp mill boiler wood ash." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2001, 2001. http://hdl.handle.net/10133/127.

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Abstract (sommario):

Land application of wood ash is becoming more appealing, as a disposable alternative, to landfilling options. It is estimated that 110,000 tonnes of wood ash is produced annually in Alberta by cogeneration systems, a large percentage produced in Central and Peace River Regions of Alberta. Alkaline (pH-13) properties and nutrient content of wood ash provides an alternative for the acidic and nutrient deficient soils within these regions. The objective of this field study was to determine the effect wood ash applications would have under field conditions on: the chemical and physical properties

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50

Sattar, Mohamed Shaheen. "An environmental impact perspective of the management, treatment, and disposal of hazardous pharmaceutical compounds generated as medical waste at selected hospitals in Cape Town, South Africa." Thesis, Cape Peninsula University of Technology, 2011. http://hdl.handle.net/20.500.11838/2012.

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Thesis (MTech (Environmental Health))--Cape Peninsula University of Technology, 2011.<br>Pharmaceuticals have been formulated to influence physiological systems in humans, animals, and microbes but have never been considered as potential environmental pollutants by healthcare professionals. The human body is not a barrier to chemicals, but is permeable to it. Thus after performing their in-vivo functions, pharmaceutical compound introduced into the body, exit mainly via urine and faeces. Sewage therefore contains highly complex mixtures of chemicals in various degrees of biological potenc

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