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Journal articles on the topic 'Phenols; Iron chloride; Carbonate'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Sharmila, P., H. Vetha Merlin Kumari, S. Mohan, and Meenakumari R. "STANDARDIZATION OF A SIDDHA HERBOMINERAL FORMULATION: KARASOODA SATHU PARPAM." International Journal of Research in Ayurveda and Pharmacy 11, no. 5 (2020): 103–9. http://dx.doi.org/10.7897/2277-4343.1105150.

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Siddha system is one of the ancient medical systems in India. The siddha is capable of treating all types of disease other than emergency cases. Karasooda Sathu Parpam is a traditional siddha herbomineral drug. The aim of the present study is to investigate the phytochemical, physiochemical and TLC, HPTLC of a traditional Shastric siddha herbomineral formulation known as Karasooda Sathu Parpam. Preliminary phytochemical analysis, HPTLC analysis and physicochemical parameters such as ash values, extractive values and loss of drying were determined as per Pharmacopoeial Laboratory for Indian Med

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2

Shalit, Hadas, Anna Libman, and Doron Pappo. "meso-Tetraphenylporphyrin Iron Chloride Catalyzed Selective Oxidative Cross-Coupling of Phenols." Journal of the American Chemical Society 139, no. 38 (2017): 13404–13. http://dx.doi.org/10.1021/jacs.7b05898.

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Toda, Fumio, Koichi Tanaka, and Shinji Iwata. "Oxidative coupling reactions of phenols with iron(III) chloride in the solid state." Journal of Organic Chemistry 54, no. 13 (1989): 3007–9. http://dx.doi.org/10.1021/jo00274a007.

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4

Zhang, H. Y., W. C. Shen, Z. D. Wang, and F. Zhang. "Formation of iron chloride-graphite intercalation compounds in propylene carbonate by electrolysis." Carbon 35, no. 2 (1997): 285–90. http://dx.doi.org/10.1016/s0008-6223(96)00140-6.

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5

Suponik, Tomasz, and Marcin Lutyński. "IN-SITU TREATMENT OF GROUNDWATER CONTAMINATED WITH UNDERGROUND COAL GASIFICATION PRODUCTS / OCZYSZCZANIE IN-SITU WÓD PODZIEMNYCH ZANIECZYSZCZONYCH PRZEZ PRODUKTY PODZIEMNEGO ZGAZOWANIA WĘGLA." Archives of Mining Sciences 58, no. 4 (2013): 1263–78. http://dx.doi.org/10.2478/amsc-2013-0087.

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Abstract In the paper the contaminants that may be generated in Underground Coal Gasification (UCG) process were listed and include mainly mono- and polycyclic aromatic hydrocarbons, phenols, heavy metals, cyanides, ammonium, chloride and sulphate. As a method of UCG contaminated groundwater treatment a Permeable Reactive Barrier technology was proposed. To assess the effectiveness of this technology two tests were carried out. Granulated activated carbon (GAC) and zeolite, and granulated activated carbon and scrap iron were applied in the first and second test respectively. For these material

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Herrero, María Teresa, Jokin Díaz de Sarralde, Raul SanMartin, Laura Bravo, and Esther Domínguez. "Cesium Carbonate-Promoted Hydroamidation of Alkynes: Enamides, Indoles and the Effect of Iron(III) Chloride." Advanced Synthesis & Catalysis 354, no. 16 (2012): 3054–64. http://dx.doi.org/10.1002/adsc.201200430.

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Herrero, Maria Teresa, Jokin Diaz de Sarralde, Raul SanMartin, Laura Bravo, and Esther Dominguez. "ChemInform Abstract: Cesium Carbonate-Promoted Hydroamidation of Alkynes: Enamides, Indoles and the Effect of Iron(III) Chloride." ChemInform 44, no. 15 (2013): no. http://dx.doi.org/10.1002/chin.201315103.

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8

Shi, Baoyou, Yunjie Wan, Ying Yu, Junnong Gu, and Gangliang Wang. "Evaluating the chemical stability in drinking water distribution system by corrosivity and precipitation potential." Water Supply 18, no. 2 (2017): 383–90. http://dx.doi.org/10.2166/ws.2017.125.

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Abstract Calcium carbonate equilibrium-based indices, such as calcium carbonate precipitation potential (CCPP), have long been used as indicators of water chemical stability. The Larson ratio (LR) is a non-CaCO3 based index for measuring water corrosivity against iron pipes, but the involved mechanisms and application of LR are not completely understood. To understand the applicability of the two indices on iron corrosion product release in drinking water distribution systems (DWDS), unlined cast iron pipes were harvested from a real DWDS to establish pilot-scale experimental systems, and diff

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9

Rodriguez Rodriguez, Nerea, Lukas Gijsemans, Jakob Bussé, et al. "Selective Removal of Zinc from BOF Sludge by Leaching with Mixtures of Ammonia and Ammonium Carbonate." Journal of Sustainable Metallurgy 6, no. 4 (2020): 680–90. http://dx.doi.org/10.1007/s40831-020-00305-3.

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Abstract The zinc content of basic oxygen furnace (BOF) sludges is too high for direct recycling into the blast furnace via the sinter plant, as excessive zinc concentrations are detrimental for the refractory lining of the blast furnace. However, by partial and selective removal of zinc from the BOF sludge, the residual sludge can be used as a secondary iron resource in the blast furnace. In this paper, BOF sludge was leached with aqueous ammonia, aqueous solutions of ammonium salts (chloride, carbonate, and sulfate), and aqueous mixtures of ammonia and ammonium salt. The mixtures of ammonia

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10

Grigoropoulou, H., and C. Philippopoulos. "Homogeneous oxidation of phenols in aqueous solution with hydrogen peroxide and ferric ions." Water Science and Technology 36, no. 2-3 (1997): 151–54. http://dx.doi.org/10.2166/wst.1997.0506.

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The chemical oxidation of phenol and chlorophenols with hydrogen peroxide in the presence of soluble iron can be economically attractive at low oxidant consumption, leading then to intermediates that are more easily biodegradable. The homogeneous oxidation of phenol and chlorophenols in aqueous solutions with hydrogen peroxide is studied at oxidant : phenol ratio of about 4:1 and 16:1 (mol/mol) at various catalyst concentrations, at ambient temperature without pH control. Ferric chloride, ferric and ferrous sulphate and ferrous ammonium sulphate are used as oxidation catalysts. Ferric salts in

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11

Sawama, Yoshinari, Masahiro Masuda, Ryosuke Nakatani, et al. "Site-Selective Iron(III) Chloride-Catalyzed Arylation of 4-Aryl-4-methoxy-2,5-cyclohexadienones for the Synthesis of Polyarylated Phenols." Advanced Synthesis & Catalysis 358, no. 23 (2016): 3683–87. http://dx.doi.org/10.1002/adsc.201600577.

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12

Berntsen, T., M. Seiersten, and T. Hemmingsen. "Effect of FeCO3 Supersaturation and Carbide Exposure on the CO2 Corrosion Rate of Carbon Steel." Corrosion 69, no. 6 (2013): 601–13. http://dx.doi.org/10.5006/0553.

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The effect on corrosion of carbon steel of varying bicarbonate (HCO3−) and ferrous ion (Fe2+) concentrations in carbon dioxide (CO2) purged in 1 wt% sodium chloride (NaCl) and 50 wt% monoethylene glycol (MEG, C2H6O2) solutions was studied. The iron carbide (Fe3C) in the steel was exposed by pre-corrosion to explore its role in the iron carbonate (FeCO3) film formation process at pH-stabilized conditions. The corrosion layers formed ranged from being protective and showing passive behavior (corrosion potential approximately −0.5 V vs. silver/silver chloride [Ag/AgCl]) to being non-protective de

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13

Susilawati and Aris Doyan. "Characteristics of Barium M-Hexaferrite with Doping Mn and Ni in X-Band Frequency for Microwave Absorption." Materials Science Forum 1028 (April 2021): 32–37. http://dx.doi.org/10.4028/www.scientific.net/msf.1028.32.

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Synthesis of Barium M-Hexaferrite samples based on natural iron sand at Ketapang beach, Pringgabaya District, East Lombok with Mn-Ni doping (BaFe12-xMnxNixO19) has been successfully carried out using the coprecipitation method. The synthesis aims to determine the characteristics of the electrical properties of the Reflection Loss sample of BaFe12-xMnxNixO19 doped with Mn-Ni metal. The basic materials used in this study were natural iron sand and Barium Carbonate (BaCO3) powder, while the doping materials used were Nickel (II) Chloride Hexahydrate (NiCl2.6H2O) and Manganese(II) chloride (MnCl2)

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14

Klapötke, Thomas M., Burkhard Krumm, Richard Moll, Sebastian F. Rest, and Muhamed Sućeska. "Fluorodinitroethyl Ortho-carbonate and -formate as Potential High Energy Dense Oxidizers." Zeitschrift für Naturforschung B 69, no. 1 (2014): 8–16. http://dx.doi.org/10.5560/znb.2014-3288.

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Tetrakis(2-fluoro-2,2-dinitroethyl) ortho-carbonate (1) and tris(2-fluoro-2,2-dinitroethyl) orthoformate (2) were synthesized by the reaction of carbon tetrachloride, respectively chloroform, with 2-fluoro-2,2-dinitroethanol and catalytic amounts of anhydrous iron(III) chloride. The compounds were characterized by single-crystal X-ray diffraction, vibrational spectroscopy (IR and Raman), multinuclear NMR spectroscopy, elemental analysis, and multi-temperature DSC measurements. The suitability of the compounds as potential oxidizers in energetic formulations has been investigated and discussed.

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15

Rava, E., and E. Chirwa. "Effect of carrier fill ratio on biofilm properties and performance of a hybrid fixed-film bioreactor treating coal gasification wastewater for the removal of COD, phenols and ammonia-nitrogen." Water Science and Technology 73, no. 10 (2016): 2461–67. http://dx.doi.org/10.2166/wst.2016.108.

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The purpose of this study was to determine the effect different biofilm carrier filling ratios would have on biofilm morphology and activity and bacterial diversity in a hybrid fixed-film bioreactor treating high strength coal gasification wastewater (CGWW) for the removal of chemical oxygen demand (COD), phenols and ammonia-nitrogen. Results showed that a carrier fill of 70% formed a ‘compact’ biofilm, a 50% fill formed a ‘rippling’ biofilm and a 30% fill formed a ‘porous’ biofilm. The highest microbial activity was obtained with a 50% carrier fill supporting a relatively thin biofilm. The hi

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16

Simpson, Robert J., Sanjiv Sidhar, and Timothy J. Peters. "Application of selective extraction to the study of iron species present in diet and rat gastrointestinal tract contents." British Journal of Nutrition 67, no. 3 (1992): 437–44. http://dx.doi.org/10.1079/bjn19920048.

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Iron speciation in rodent diet and rat gastrointestinal tract lumen during dietary digestion and absorption was investigated with a novel selective extraction technique. Five Fe fractions were identified, namely exchangeable (soluble in 1 M-magnesium chloride), carbonate-bound (soluble in mild acid), oxide-bound (soluble in hydroxylamine–acetic acid), organic-bound (soluble after treatment with peroxide in nitric acid) and residual. Fe from the pelleted diet was mobilized by rat stomach to the exchangeable fraction, then redistributed to the carbonate- and oxide-bound fractions on passage thro

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17

Ruhl, Aki S., and Martin Jekel. "Influence of hydronium, sulfate, chloride and other non-carbonate ions on hydrogen generation by anaerobic corrosion of granular cast iron." Water Research 47, no. 16 (2013): 6044–51. http://dx.doi.org/10.1016/j.watres.2013.07.022.

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18

Pramanik, Arun Kumar, Sandip Kumar Das, and Abhik Chatterjee. "A Study on Groundwater Quality Based on Major Ion Chemistry of Jharkhand State in India: A Review." Oriental Journal Of Chemistry 37, no. 4 (2021): 962–71. http://dx.doi.org/10.13005/ojc/370425.

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Groundwater is prime and major source of drinking water in our world. Groundwater in Jharkhand is also used for drinking, domestic, irrigation, mining and industrial etc. purposes. In Jharkhand some population are suffering from scarcity of pure drinking water and some population have partial facility with drinking water as groundwater of many area of Jharkhand are contaminated with fluoride, arsenic, heavy metals and iron etc. dangerous chemicals. This review paper focuses on current status of groundwater and contamination of different water quality parameters based on major ion chemistry in

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19

Bernini, Roberta, Isabella Carastro, Francesca Santoni, and Mariangela Clemente. "Synthesis of Lipophilic Esters of Tyrosol, Homovanillyl Alcohol and Hydroxytyrosol." Antioxidants 8, no. 6 (2019): 174. http://dx.doi.org/10.3390/antiox8060174.

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Low-molecular weight phenols such as tyrosol, homovanillyl alcohol and hydroxytyrosol are valuable compounds that exhibit a high number of health-promoting effects such as antioxidant, anti-inflammatory and anticancer activity. Despite these remarkable properties, their applications such as dietary supplements and stabilizers of foods and cosmetics in non-aqueous media are limited for the hydrophilic character. With the aim to overcome this limitation, the paper describes a simple and low-cost procedure for the synthesis of lipophilic esters of tyrosol, homovanillyl alcohol and hydroxytyrosol.

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20

Davidson, C. M., N. J. Peters, A. Britton, L. Brady, P. H. E. Gardiner, and B. D. Lewis. "Surface analysis and depth profiling of corrosion products formed in lead pipes used to supply low alkalinity drinking water." Water Science and Technology 49, no. 2 (2004): 49–54. http://dx.doi.org/10.2166/wst.2004.0086.

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Modern analytical techniques have been applied to investigate the nature of lead pipe corrosion products formed in pH adjusted, orthophosphate-treated, low alkalinity water, under supply conditions. Depth profiling and surface analysis have been carried out on pipe samples obtained from the water distribution system in Glasgow, Scotland, UK. X-ray diffraction spectrometry identified basic lead carbonate, lead oxide and lead phosphate as the principal components. Scanning electron microscopy/energy-dispersive x-ray spectrometry revealed the crystalline structure within the corrosion product and

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21

Ishchenko, V. D., S. V. Kostenko, V. M. Kostenko та Y. V. Tymoshyk. "ПЕРСПЕКТИВИ ЗАСТОСУВАННЯ ЧУБУШНИКА ЯК ЛІКАРСЬКОЇ РОСЛИНИ". Scientific Messenger of LNU of Veterinary Medicine and Biotechnology 18, № 3(70) (2016): 123–28. http://dx.doi.org/10.15421/nvlvet7029.

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Medicinal plants are insufficiently studied and almost endless. The use of phytomedication enables reduce the impact of xenobiotics on animals organism through the natural origin of active compounds and associated and auxiliary substances smoothing the basic action and prevent the manifestation of side effects. One of such plants the possibility of using in veterinary practice is still insufficiently studied is mock–orange. Considering on the important role of phenolic compounds in the metabolic regulation of plant and diversity of impact of these substances on organism of animals and humans,

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22

Su, Chunming, and Robert W. Puls. "Arsenate and Arsenite Removal by Zerovalent Iron: Effects of Phosphate, Silicate, Carbonate, Borate, Sulfate, Chromate, Molybdate, and Nitrate, Relative to Chloride." Environmental Science & Technology 35, no. 22 (2001): 4562–68. http://dx.doi.org/10.1021/es010768z.

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23

Luz, Juliana Antunes da, Dhiéssica dos Santos Ribeiro, Jabson Menezes Teixeira та ін. "α-amylase production obtained from Aspergillus niger ATCC 1004 by solid state fermentation using Croton linearifolius residues as substrate". Research, Society and Development 10, № 11 (2021): e510101119891. http://dx.doi.org/10.33448/rsd-v10i11.19891.

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The objective of this work was to optimize the production and characterize α-amylase produced by Aspergillus niger through solid state fermentation, using leaf residues of C. linearifolius as substrate. For optimization, the incubation temperature, initial humidity and fermentation time were combined based on Doehlert experimental design. The highest productivity of the enzyme was 122.88 Ug-1, at 33oC, 70% humidity and 14 days of time. In the enzymatic characterization, the enzyme extract presented pH 5.0 and temperature 50oC, and α-amylase was thermostable up to 60oC, maintaining more than 90

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24

Hansen, H. C. B. "Composition, stabilization, and light absorption of Fe(II)Fe(III) hydroxy-carbonate (‘green rust’)." Clay Minerals 24, no. 4 (1989): 663–69. http://dx.doi.org/10.1180/claymin.1989.024.4.08.

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AbstractThe chemical composition of the pyroaurite-type compound Fe(II)Fe(III) hydroxy-carbonate (‘green rust’) synthesised from freshly precipitated ferrihydrite and Fe(II) chloride solution at pH 7.0 (‘induced hydrolysis’) was determined. The compound was nearly stoichiometric, with the formula the Fe(II):Fe(III) ratio being independent of the Fe(II):Fe(III) ratio in the initial reaction mixture. It shows all the XRD peaks reported for this compound. Visible-near IR shows a broad peak at 650 nm which is ascribable to intervalence charge transfer and therefore the absorbance maximum decreases

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Kovyazin, Anton, Konstantin L. Timofeev, and Sergey Krauhin. "Copper Smelting Fine Dust Autoclave Leaching." Materials Science Forum 946 (February 2019): 615–20. http://dx.doi.org/10.4028/www.scientific.net/msf.946.615.

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At present, arsenic content in copper concentrates is increasing, which leads to an increase in its content in all smelting products, the largest amount of arsenic is transferred in fine dust (dust composition,%: 10-12 Zn, 11-13 Pb, 8-15 Cu , 12-14 Fe, 5-10 As). Autoclaved leaching of dusts (temperature 160-200 °C, oxygen pressure 0.4-0.8 MPa, molar ratio H2SO4 /(Cu + Zn) = 0.75-2.25) to obtain a copper-zinc solution and a cake containing arsenic, iron and lead was studied. Copper extraction in the solution reaches 92%, zinc 95%. Lead, arsenic and iron are concentrated in the cake. Lead from c

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Ai, Luoyan, Tiancheng Ren, Qin Yan, et al. "Degradation efficiencies of 2,4,6-TCP by Fe0-based advanced oxidation processes (AOPs) with common peroxides." PLOS ONE 16, no. 9 (2021): e0257415. http://dx.doi.org/10.1371/journal.pone.0257415.

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Degradation of 2,4,6-trichlorophenol (2,4,6-TCP) by zero-valent iron (ZVI) activating three common peroxides (peroxymonosulfate (PMS), hydrogen peroxide (H2O2), and peroxydisulfate (PS)) was investigated. The effects of ZVI dosage, peroxides concentration, initial pH, and Cl- concentration were examined. The 2,4,6-TCP degradation efficiencies by Fe0/peroxides (PMS, H2O2, PS) were compared. Results showed that the order for degradation efficiency was H2O2≥PMS>PS. The degradation efficiency of 2,4,6-TCP in ZVI/peroxides systems were optimal at c(Ox) = 1 mmol•L-1; c(Fe0) = 0.1 g/L; initial pH

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27

Kim, Sungtae, Cassandra Marrs, Martin Nemer, and Jay Je-Hun Jang. "Solubility Model for Ferrous Iron Hydroxide, Hibbingite, Siderite, and Chukanovite in High Saline Solutions of Sodium Chloride, Sodium Sulfate, and Sodium Carbonate." ACS Earth and Space Chemistry 1, no. 10 (2017): 647–63. http://dx.doi.org/10.1021/acsearthspacechem.7b00065.

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28

Kuang, Yun, Michael J. Kenney, Yongtao Meng, et al. "Solar-driven, highly sustained splitting of seawater into hydrogen and oxygen fuels." Proceedings of the National Academy of Sciences 116, no. 14 (2019): 6624–29. http://dx.doi.org/10.1073/pnas.1900556116.

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Electrolysis of water to generate hydrogen fuel is an attractive renewable energy storage technology. However, grid-scale freshwater electrolysis would put a heavy strain on vital water resources. Developing cheap electrocatalysts and electrodes that can sustain seawater splitting without chloride corrosion could address the water scarcity issue. Here we present a multilayer anode consisting of a nickel–iron hydroxide (NiFe) electrocatalyst layer uniformly coated on a nickel sulfide (NiSx) layer formed on porous Ni foam (NiFe/NiSx-Ni), affording superior catalytic activity and corrosion resist

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29

Skipin, Leonid, Vera Petukhova, Elena Gaevaya, Elena Zakharova, and Aleksandr Mitrikovskiy. "Comparative Effect of Different Coagulants on Physical Properties of Drill Cuttings." Materials Science Forum 871 (September 2016): 233–41. http://dx.doi.org/10.4028/www.scientific.net/msf.871.233.

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The paper presents the study on the physical properties of the cuttings. Culvert capacity of the drill cuttings with different coagulants is considered. The water permeability of the studied samples varies depending on the quality of the composition and the dosage of a coagulant used. The coagulants have been proposed as aluminium sulphate, iron sulphate, calcium chloride, gypsum, phosphogypsum, serpentine, blast furnace slag, calcium carbonate and carnallite. Iron and aluminium sulphates, calcium chloride, gypsum and phosphogypsum appear to be the most effective when acting on the water perme

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30

Kvartenko, Oleksandr, Larysa Sabliy, Nataliya Kovalchuk, and Andriy Lysytsya. "The use of the biological method for treating iron containing underground waters." Journal of Water and Land Development 39, no. 1 (2018): 77–82. http://dx.doi.org/10.2478/jwld-2018-0061.

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AbstractThe use of the biological method is promising for treating underground waters from iron compounds. Iron bacteria used in the process are widely spread in weak acidic and neutral underground waters containing iron ions (II), dissolved carbon dioxide and minimum concentrations of oxygen. The relevant direction of present-day biotechnology is the use of iron bacteria for treating underground waters. The goal of this research is to compare the efficiency of using the biological method for treating underground iron containing weak acidic and neutral waters under different conditions. As the

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31

Kornmüller, A., S. Karcher, and M. Jekel. "Adsorption of reactive dyes to granulated iron hydroxide and its oxidative regeneration." Water Science and Technology 46, no. 4-5 (2002): 43–50. http://dx.doi.org/10.2166/wst.2002.0547.

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Granulated iron hydroxide (b-FeOOH) is used as a regenerable sorbent and catalyst for reactive dye removal in textile wastewater treatment. In oxidative regeneration the previously sorbed reactive dye is catalytically oxidized after activation of hydrogen peroxide to hydroxyl radicals on the FeOOH surfaces to regain adsorption capacity and reuse the sorbents. A high initial H2O2 concentration is needed for an efficient mass transfer water/solid but its consumption per oxidized dye results only in 7-25 mg mg−1. At room temperature a regeneration time of 3.5 h is necessary for decolorization and

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Martynov, Vladyslav O., and Viktor V. Brygadyrenko. "The impact of some inorganic substances on change in body mass of Tenebrio molitor (Coleoptera, Tenebrionidae) larvae in a laboratory experiment." Folia Oecologica 45, no. 1 (2018): 24–32. http://dx.doi.org/10.2478/foecol-2018-0003.

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Abstract Addition of low concentrations of metal ions to the diet of saprophagous insects can impact on their metabolism over a short period of time, causing an increase or decrease in their body mass. This article presents a 14-day laboratory experiment evaluating the changes in the body mass of larval stage 3 of Tenebrio molitor (Linnaeus, 1758) induced by adding different inorganic substances (350 mg kg−1 of dry fodder) to the diet of the larvae. Following the addition of inorganic substances to the fodder, the most marked differences compared to the control were observed in the groups whic

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Ignatkina, V. A., E. D. Shepeta, L. A. Samatova, and V. A. Bocharov. "Improvement of the technological effects of flotation of lean fine disseminated scheelite ores." Izvestiya Vuzov. Tsvetnaya Metallurgiya (Universities' Proceedings Non-Ferrous Metallurgy), no. 5 (October 25, 2019): 4–13. http://dx.doi.org/10.17073/0021-3438-2019-4-5-4-13.

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The paper describes the results of studying ways to improve the contrast of calcite and scheelite technological properties using water glass combined with aluminum, zinc, iron, magnesium sulphate salts, a mixture of water glass and calcium chloride, sodium carboxymethyl cellulose (CMC), combinations of sodium oleate with low-polar compounds (neonol, fatty isoalcohols), liquid phase and oleate ultrasound treatment. The monomineralic fraction of calcite floated by mechanical cell demonstrated that the minimum recovery of calcite is achieved by combining the Fe(II) salt and water glass (3(4) : 1)

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34

R. Aher, K., P. L. Salve, and S. G. Gaikwad. "Assessing groundwater quality using water quality index in semiarid region of Aurangabad district, central India." International Journal of Advanced Geosciences 8, no. 2 (2020): 249. http://dx.doi.org/10.14419/ijag.v8i2.31139.

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This paper presents a study on the influence of geochemical parameters on groundwater quality in GV-35 watershed of Aurangabad district, Maharashtra, India. Groundwater samples were collected from different locations and their physiochemical quality parameter were analysed. Water quality index (WQI) was determined on the basis of various physical and chemical parameters like pH, electrical conductivity, turbidity, total dissolved solids, total hardness, calcium, magnesium, sulphate, chloride, nitrate, sodium, potassium, carbonate, bicarbonate, fluoride and iron. These parameters were determine

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Ramanathan, Raja, and Hisham A. Nasr-El-Din. "A Comparative Experimental Study of Alternative Iron Sulfide Scale Dissolvers in the Presence of Oilfield Conditions and Evaluation of New Synergists to Aminopolycarboxylic Acids." SPE Journal 26, no. 02 (2021): 693–715. http://dx.doi.org/10.2118/205005-pa.

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Summary Issues such as high corrosion rate, hydrogen sulfide (or H2S) generation, and scale reprecipitation have required the use of alternative dissolvers such as tetrakis(hydroxymethyl)phosphonium sulfate (THPS)–ammonium chloride (or NH4Cl) blend and chelating agents to dissolve iron sulfide (or FeS) scales. However, there are many aspects of these dissolvers that need investigation. This paper provides a guideline to select the best dissolver under various oilfield conditions by an extensive laboratory study. Furthermore, the iron sulfide scale removal is enhanced by the use of new synergis

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Gao, B., Q. Yue, and J. Miao. "Evaluation of polyaluminium ferric chloride (PAFC) as a composite coagulant for water and wastewater treatment." Water Science and Technology 47, no. 1 (2003): 127–32. http://dx.doi.org/10.2166/wst.2003.0033.

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Coal gangue is a kind of waste from coal mine processing. Polyaluminium ferric chloride (PAFC), a new type of inorganic composite coagulant, was prepared by using the waste from the Mineral Bureau of Yanzhou, China, hydrochloric acid and calcium carbonate as raw materials. The relationship between the stability of ferric ion and the ionic strength of solution was investigated. The zeta potential of PAFC hydrolysis products of PAFC and the coagulation performances under different pH value were discussed. The turbidity removal properties of PAFC, polyaluminium (PAC) and polyferric sulfate (PFS)

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Olivo, Gema Ribeiro, and Michel Gauthier. "Palladium minerals from the Cauê iron mine, Itabira District, Minas Gerais, Brazil." Mineralogical Magazine 59, no. 396 (1995): 455–63. http://dx.doi.org/10.1180/minmag.1995.059.396.07.

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AbstractPalladium-bearing minerals from the Cauê iron mine, Itabira District, Minas Gerais, Brazil, are found in gold-rich jacutinga, a hydrothermally-altered Lake Superior-type carbonate-bearing oxide facies iron-formation. Palladium occurs as: native palladium with trace contents of Au, Fe and Cu; palladseite ((Pd,Cu,Hg)17Se15), which was found in the core of a grain of palladium; palladium–copper oxide ((Pd,Cu)O); and arsenopalladinite (Pd8(As,Sb)3), with inclusions of palladium–copper oxide. The palladium and palladium–copper oxide grains are coated with films of gold and commonly do not e

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Cuttler, A. H., V. Man, T. E. Cranshaw, and G. Longworth. "A Mössbauer study of green rust precipitates: I. Preparations from sulphate solutions." Clay Minerals 25, no. 3 (1990): 289–301. http://dx.doi.org/10.1180/claymin.1990.025.3.05.

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AbstractThe preparation of green rusts from sulphate solutions and representative Mössbauer spectra are described. As the samples oxidized readily, attention focused on the Mössbauer parameters at liquid nitrogen and helium temperatures. The spectra recorded at 77 K could be fitted satisfactorily with one ferrous iron quadrupole doublet with a separation of 2·93 mms−1 and one ferric iron quadrupole doublet with a separation of 0·45 mms−1. In some spectra a ferric iron magnetic hyperfine of strength 49·2 T was also apparent. At 4·2 K, the ferrous iron exhibited a hyperfine splitting with a fiel

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Sawama, Yoshinari, Masahiro Masuda, Ryosuke Nakatani, et al. "Front Cover Picture: Site-Selective Iron(III) Chloride-Catalyzed Arylation of 4-Aryl-4-methoxy-2,5-cyclohexadienones for the Synthesis of Polyarylated Phenols (Adv. Synth. Catal. 23/2016)." Advanced Synthesis & Catalysis 358, no. 23 (2016): 3655. http://dx.doi.org/10.1002/adsc.201601185.

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Cheng, Rong, Can Cheng, Peng Liu, Lei Shi, and Zhong Ma. "Effect of Ni morphology on removal of pentachlorophenol with Fe/Ni nanomaterials." Water Supply 16, no. 3 (2016): 810–16. http://dx.doi.org/10.2166/ws.2016.009.

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Chlorinated phenols are a kind of environmental priority pollutant that attract much attention. Nanosized Fe and Fe/Ni materials are considered as promising options for chlorinated phenol removal. The effect of Ni morphology on the removal of pentachlorophenol (PCP) with Fe/Ni nanomaterials was investigated in this study. Iron nanoparticles and nickel nanomaterials with different shapes were synthesized using a chemical reduction method and wet chemical techniques, respectively. The concentrations of PCP and chloride in solutions were measured with and without Ni present. The intermediates of

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Pereira, Chrystopher Allan Miranda, and Núbia Natália Brito. "Integration of treatment technologies with Fenton reagent for laboratory effluent remediation." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 13, no. 5 (2018): 1. http://dx.doi.org/10.4136/ambi-agua.2243.

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This study investigated of the potential value of the integration of the coagulation/flocculation, Advanced Oxidation Processes (AOP) (Fenton reagent) and slow sand filtration technologies, with the aim of treating laboratory wastewater. The treatment system was designed in laboratory scale through coagulation/flocculation. It involved the use of Jar Test equipment with a sequence of two rotational phases: fast mixes to 300 rpm for 20 seconds and slow mixes to 30 rpm for 6 minutes and 10 seconds, with the addition of anionic polymer and sedimentation for 60 minutes at ambient temperature. In t

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Journal, Baghdad Science. "Biological and chemical Study to evaluate the types of water used for drinking in the Al-youssiffiyah area and its effect on public health." Baghdad Science Journal 6, no. 3 (2009): 499–504. http://dx.doi.org/10.21123/bsj.6.3.499-504.

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Election study included four sites for the waters in area of Youssifiyah south of Baghdad (river water, tank water, liquefactions water, and water filtrate and seethed and purifier by alum and chloride), the samples were collected during the month of June in 2007. Temperature, electrical conductivity and acidity are measured. Also , the concentration of chloride , sulphate , carbonate , nitrate , sodium , calcium , magnesium , hard total and total dissolved substances are determined , as well as heavy metals assess environmental risk (such as Cu, Pb, Zn, Fe). It was also a study of bacterial t

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Merz, C., and J. Steidl. "Data on geochemical and hydraulic properties of a characteristic confined/unconfined aquifer system of the younger Pleistocene in northeast Germany." Earth System Science Data 7, no. 1 (2015): 109–16. http://dx.doi.org/10.5194/essd-7-109-2015.

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Abstract. The paper presents a database of hydrochemical and hydraulic groundwater measurements of a younger Pleistocene multilayered, unconfined/confined aquifer system in NE Germany. The Institute of Landscape Hydrology of the Leibniz Centre for Agricultural Landscape Research (ZALF) operates seven groundwater monitoring wells in the Quillow catchment located in the Uckermark region (federal state of Brandenburg, Germany). From July 2000 to March 2014, water samples were collected periodically on different days of the year and at depths between 3 and 5 m (shallow wells) and 16 and 24 m (deep

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Merz, C., and J. Steidl. "Long-term geochemical and hydraulic measurements in a characteristic confined/unconfined aquifer system of the younger Pleistocene in northeast Germany." Earth System Science Data Discussions 8, no. 1 (2015): 113–25. http://dx.doi.org/10.5194/essdd-8-113-2015.

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Abstract. The paper presents a data base of hydrochemical and hydraulic groundwater measurements of a younger Pleistocene multilayered, unconfined/confined aquifer system in NE Germany. The Institute of Landscape Hydrology of the Leibniz Centre for Agricultural Landscape Research (ZALF) e. V. operates seven groundwater monitoring wells in the Quillow catchment located in the Uckermark region (Federal State of Brandenburg, Germany). From July 2000 to March 2014, water samples were collected periodically on different days of the year and at depths between 3 and 5 m (shallow wells) and 20 and 25

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Şen, Fazıl, and Abdullah Aksoy. "Chemical and Physical Quality Criteria of Bulakbaşı Stream in Turkey and Usage of Drinking, Fisheries, and Irrigation." Journal of Chemistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/725082.

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Water quality parameters were analyzed in Bulakbaşı stream. The in situ measurements and laboratory analyses were made on water samples taken from 4 sampling points on the Bulakbaşı stream monthly. During the study, the average water temperature as 16.3°C, dissolved oxygen (DO) 12.91 mg/L, oxygen saturation (OS) 152.8%, pH 8.25, electrical conductivity (EC) 779.6 μS/cm, salinity 0.435‰, chloride 83.97 mg/L, calcium 56.5 mg/L, magnesium 57.1 mg/L, total hardness 391.1 mg/L CaCO3, carbonate 0 mg/L, bicarbonate 365.95 mg/L, total alkalinity 299.85 mg/L, nitrate 4.74 mg/L, nitrite 20.83 µg/L, ammo

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Masciale, Rita, Stefano Amalfitano, Eleonora Frollini, et al. "Assessing Natural Background Levels in the Groundwater Bodies of the Apulia Region (Southern Italy)." Water 13, no. 7 (2021): 958. http://dx.doi.org/10.3390/w13070958.

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Defining natural background levels (NBL) of geochemical parameters in groundwater is a key element for establishing threshold values and assessing the environmental state of groundwater bodies (GWBs). In the Apulia region (Italy), carbonate sequences and clastic sediments host the 29 regional GWBs. In this study, we applied the Italian guidelines for the assessment of the NBLs, implementing the EU Water Framework Directive, in a south-European region characterized by the typical Mediterranean climatic and hydrologic features. Inorganic compounds were analyzed at GWB scale using groundwater qua

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Ahmed, Maqsood, Mingshan Ji, Aatika Sikandar, et al. "Phytochemical Analysis, Biochemical and Mineral Composition and GC-MS Profiling of Methanolic Extract of Chinese Arrowhead Sagittaria trifolia L. from Northeast China." Molecules 24, no. 17 (2019): 3025. http://dx.doi.org/10.3390/molecules24173025.

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Sagittaria trifolia is a medicinal foodstuff of China and East Asia belonging to the family Alismataceae. Samples of S. trifolia tubers were collected from Meihekow, Siping, Jilin, Harbin and Wuchang from Northeast China. The current study was aimed to evaluate the qualitative and quantitative analysis, antioxidant activity, biochemical analysis and chemical composition of different populations of S. trifolia. By using Folin–Ciocalteu, aluminium chloride colourimetric and 1,1-diphenyl-1-picrylhydrazyl (DPPH), total phenol and flavonoids content and antioxidant activity was analysed. Furthermor

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Branzei, Mihai, Mihai Ovidiu Cojocaru, Leontin Nicolae Druga, and Mariana Ion. "Obtaining the Controlled Sulphonitrocarburized Layer Phase Compositions, by the Variation of the Solid Powdery Medium Components." Revista de Chimie 71, no. 7 (2020): 225–33. http://dx.doi.org/10.37358/rc.20.7.8240.

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Simultaneous saturation of the metallic surface with sulphur, nitrogen and carbon � named sulphonitrocarburizing (SNC) process - may be carried out in a multitude of variants, differ in media state of aggregation which provide the elements in native state, or differ in phase composition. The most commonly used media in SNC process are liquid or gaseous and from standpoint of phase composition, there are media made of compounds generator of the cyanides, representing important source of carbon and nitrogen, and as a sulphur source, may be used iron sulphide, sodium sulphide, sodium thiocyanides

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Hoque, M., S. Ahmed, MJ Alam, M. Purkayastha, A. Belal, and MA Anwar. "Physicochemical and microbial water quality of Sylhet city corporation, Bangladesh." International Journal of Natural Sciences 2, no. 1 (2012): 33–37. http://dx.doi.org/10.3329/ijns.v2i1.10881.

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Sylhet City Corporation (SCC) of Bangladesh is supplying water to the Sylhet city dwellers through its distribution network. The quality of water is at risk to deteriorate during its flow through the distribution system and also due to probability of high elemental concentrations in groundwater. To identify such probable water contamination problems; water samples from 20 (out of 27) different wards of the city were analyzed in this study. The parameters analyzed were pH, turbidity, total alkalinity as Calcium carbonate CaCO3, total hardness, iron, manganese, arsenic, chloride, fluoride, MPN (

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Phenrat, Tanapon, Peerayu Hongkumnerd, Jirapon Suk-in, and Vinita Khum-in. "Nanoscale zerovalent iron particles for magnet-assisted soil washing of cadmium-contaminated paddy soil: proof of concept." Environmental Chemistry 16, no. 6 (2019): 446. http://dx.doi.org/10.1071/en19028.

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Environmental contextCadmium contamination in paddy soil can lead to elevated cadmium concentrations in rice, potentially affecting millions of rice consumers worldwide. This study used nanoscale zerovalent iron to sequester cadmium from soil before using magnetic separation to retrieve cadmium-sorbed particles from the soil slurry. This approach hypothetically resulted in a 97% reduction of cadmium levels in rice, rendering the rice safe for human consumption. AbstractCadmium (Cd) exposure causes serious health effects, including osteopenia, itai-itai disease, kidney disease and cancer. Milli

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