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Статті в журналах з теми "Sulfur remediation"
Yu, Ke, Fu Zhen Zhang, Yong Hui Bo, and Jie Liu. "Summary of Study on Technology to Soil Sulfur Pollution Remediation." Applied Mechanics and Materials 644-650 (September 2014): 5399–402. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.5399.
Повний текст джерелаLi, Xintian, Wei Zhai, Xinran Duan, Changlong Gou, Min Li, Lixia Wang, Wangdui Basang, Yanbin Zhu, and Yunhang Gao. "Extraction, Purification, Characterization and Application in Livestock Wastewater of S Sulfur Convertase." International Journal of Environmental Research and Public Health 19, no. 23 (December 6, 2022): 16368. http://dx.doi.org/10.3390/ijerph192316368.
Повний текст джерелаWatts, Mathew P., and John W. Moreau. "Thiocyanate biodegradation: harnessing microbial metabolism for mine remediation." Microbiology Australia 39, no. 3 (2018): 157. http://dx.doi.org/10.1071/ma18047.
Повний текст джерелаWang, Weixue, Xiangxue Wang, Jinlu Xing, Qiaobin Gong, Huihui Wang, Jianjun Wang, Zhe Chen, Yuejie Ai, and Xiangke Wang. "Multi-heteroatom doped graphene-like carbon nanospheres with 3D inverse opal structure: a promising bisphenol-A remediation material." Environmental Science: Nano 6, no. 3 (2019): 809–19. http://dx.doi.org/10.1039/c8en01196f.
Повний текст джерелаIslam, Syful, Yanlai Han, and Weile Yan. "Reactions of chlorinated ethenes with surface-sulfidated iron materials: reactivity enhancement and inhibition effects." Environmental Science: Processes & Impacts 22, no. 3 (2020): 759–70. http://dx.doi.org/10.1039/c9em00593e.
Повний текст джерелаSalam, Abdus, Marielis C. Zambrano, Richard A. Venditti, and Joel J. Pawlak. "Hemicellulose and starch citrate chitosan foam adsorbents for removal of arsenic and other heavy metals from contaminated water." BioResources 16, no. 3 (June 23, 2021): 5628–45. http://dx.doi.org/10.15376/biores.16.3.5628-5645.
Повний текст джерелаPetcher, Samuel, Douglas J. Parker, and Tom Hasell. "Macroporous sulfur polymers from a sodium chloride porogen—a low cost, versatile remediation material." Environmental Science: Water Research & Technology 5, no. 12 (2019): 2142–49. http://dx.doi.org/10.1039/c9ew00477g.
Повний текст джерелаChalker, Justin M., Maximilian Mann, Max J. H. Worthington, and Louisa J. Esdaile. "Polymers Made by Inverse Vulcanization for Use as Mercury Sorbents." Organic Materials 03, no. 02 (April 2021): 362–73. http://dx.doi.org/10.1055/a-1502-2611.
Повний текст джерелаPietrzykowski, Marcin, and Justyna Likus-Cieślik. "Comprehensive Study of Reclaimed Soil, Plant, and Water Chemistry Relationships in Highly S-Contaminated Post Sulfur Mine Site Jeziórko (Southern Poland)." Sustainability 10, no. 7 (July 12, 2018): 2442. http://dx.doi.org/10.3390/su10072442.
Повний текст джерелаGülen, Jale, Abdullah Bilal Öztürk, and Aylin Boztepe. "Remediation of sulfur in two Turkish lignites under various treatments." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 44, no. 3 (July 18, 2022): 6456–65. http://dx.doi.org/10.1080/15567036.2022.2099484.
Повний текст джерелаДисертації з теми "Sulfur remediation"
Ahn, Min. "Remediation of chromium(VI) in the vadose zone: stoichiometry and kinetics of chromium(VI) reduction by sulfur dioxide." Texas A&M University, 2003. http://hdl.handle.net/1969.1/1183.
Повний текст джерелаBlue, Lisa Y. "IMMOBILIZATION OF MERCURY AND ARSENIC THROUGH COVALENT THIOLATE BONDING FOR THE PURPOSE OF ENVIRONMENTAL REMEDIATION." UKnowledge, 2010. http://uknowledge.uky.edu/gradschool_diss/785.
Повний текст джерелаStauder, Stefan. "Schwefelhaltige Arsenspezies in Grundwässern." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1187198174710-08914.
Повний текст джерелаThe motivation for the thesis was a project at an industrial site conducted in 1999 to define a remediation concept for soil and groundwater contaminated with arsenic. The contamination resulted from the deposition of residuals from pyrite burning (iron oxides containing different trace elements) in the upper soil many years ago. Because of long-term pollution with process waters rich in organic substances and sulfate, the aquifer is strongly reduced (sulfidic). Most of the arsenic was transferred out of the contaminated soil into the saturated zone in a depth of 7-10 m. There it is partly immobilized as sulfide precipitations, but part of it is solved in the groundwater in form of arsenic-sulfur-complexes (up to 4 ppm). These complexes were detected for the first time in a groundwater by means of an improved IC-ICP-MS method. It was also found that approx. 80 m downstream of the contaminated spot the concentrations of arsenic in soil and groundwater were not increased. On this basis a natural attenuation concept was proposed in 2000. The data from the investigated site was evaluated and specific laboratory tests were carried out in order to identify the unknown arsenic species as well as the processes which lead to their immobilization in the aquifer. The key role of the soluble arsenic-sulfur complexes for the mobility and toxicity of arsenic in sulfate-reducing environments is commonly accepted. In the past, thioarsenites were assumed to be the existing species in sulfidic systems. In this study, however, thioarsenates were identified in solutions spiked with in arsenite and hydrogen sulfide as well as in the contaminated groundwater. The unexpected finding of an oxidation of arsenite to thioarsenates in strongly reducing systems can be explained by the high affinity between As(III) and sulfur. In sulfide containing solutions without any oxidant, arsenite therefore undergoes disproportionation to thioarsenates and elemental arsenic. This was already found out in the 19th century, but has been neglected in publications from the last decades. According to the results of this study the anions of oxomonothioarsenate, oxodithioarsenate, oxotrithioarsenate und tetrathioarsenate are the dominating arsenic species in sulfidic waters. The partitioning of the four species is governed mainly by the sulfide concentration. Beside the high affinity between arsenic and sulfur, the instability of the As-SH group is essential to understand the reactions in the arsenic-sulfur system. As soon as the arsenic-sulfur complexes form As-SH groups (according to their dissociation characteristics) they condensate in separating hydrogen sulfide. Thioarsenates form polymers in the pH range of approx. 7-8.5. Therefore beside the mentioned monomers, thioarsenate polymers can also be important in natural environments. In more acidic solutions they decay into arsenite and sulfur or precipitate as arsenic-pentasulfide. When analyzing arsenic in sulfide containing solutions, it has always to be taken into account that thioarsenates are highly sensitive to oxygen and pH. Therefore, e.g. arsenic speciation by means of HG-AAS is not suitable for sulfidic waters and can wrongly indicate a mixture of arsenite and arsenate. It has previously been supposed that the mobility as well as the toxicity of arsenic increase if the redox state decreases. For sulfidic waters the opposite is probably the case owing to the formation of thioarsenates. The toxicity of arsenite is due to the high reactivity of the As(III) towards sulfohydroxyl groups in proteins. Without a free electron pair and sulfur already incorporated, thioarsenates should be less toxic compared to arsenite. Arsenic can be mobilized out of contaminated soils in form of thioarsenates via infiltration of sulfide solutions or by input of sulfate and biodegradable organic matter. In the presence of iron, thioarsenates can be fixated in sulfidic aquifers as a minor substitute in mackinawite and biogenic pyrite or as arsenic pyrite. Bacterial sulfate reduction is a crucial factor for the mobilization and immobilization of arsenic in reduced aquifers. Considering the negative health impacts of arsenic for millions of people worldwide, as well as the implementation of the mentioned remediation strategies the arsenic-sulfur chemistry deserves closer attention
Stauder, Stefan. "Schwefelhaltige Arsenspezies in Grundwässern: Strukturaufklärung, Analytik und Sanierungsstrategien." Doctoral thesis, Technische Universität Dresden, 2006. https://tud.qucosa.de/id/qucosa%3A23946.
Повний текст джерелаThe motivation for the thesis was a project at an industrial site conducted in 1999 to define a remediation concept for soil and groundwater contaminated with arsenic. The contamination resulted from the deposition of residuals from pyrite burning (iron oxides containing different trace elements) in the upper soil many years ago. Because of long-term pollution with process waters rich in organic substances and sulfate, the aquifer is strongly reduced (sulfidic). Most of the arsenic was transferred out of the contaminated soil into the saturated zone in a depth of 7-10 m. There it is partly immobilized as sulfide precipitations, but part of it is solved in the groundwater in form of arsenic-sulfur-complexes (up to 4 ppm). These complexes were detected for the first time in a groundwater by means of an improved IC-ICP-MS method. It was also found that approx. 80 m downstream of the contaminated spot the concentrations of arsenic in soil and groundwater were not increased. On this basis a natural attenuation concept was proposed in 2000. The data from the investigated site was evaluated and specific laboratory tests were carried out in order to identify the unknown arsenic species as well as the processes which lead to their immobilization in the aquifer. The key role of the soluble arsenic-sulfur complexes for the mobility and toxicity of arsenic in sulfate-reducing environments is commonly accepted. In the past, thioarsenites were assumed to be the existing species in sulfidic systems. In this study, however, thioarsenates were identified in solutions spiked with in arsenite and hydrogen sulfide as well as in the contaminated groundwater. The unexpected finding of an oxidation of arsenite to thioarsenates in strongly reducing systems can be explained by the high affinity between As(III) and sulfur. In sulfide containing solutions without any oxidant, arsenite therefore undergoes disproportionation to thioarsenates and elemental arsenic. This was already found out in the 19th century, but has been neglected in publications from the last decades. According to the results of this study the anions of oxomonothioarsenate, oxodithioarsenate, oxotrithioarsenate und tetrathioarsenate are the dominating arsenic species in sulfidic waters. The partitioning of the four species is governed mainly by the sulfide concentration. Beside the high affinity between arsenic and sulfur, the instability of the As-SH group is essential to understand the reactions in the arsenic-sulfur system. As soon as the arsenic-sulfur complexes form As-SH groups (according to their dissociation characteristics) they condensate in separating hydrogen sulfide. Thioarsenates form polymers in the pH range of approx. 7-8.5. Therefore beside the mentioned monomers, thioarsenate polymers can also be important in natural environments. In more acidic solutions they decay into arsenite and sulfur or precipitate as arsenic-pentasulfide. When analyzing arsenic in sulfide containing solutions, it has always to be taken into account that thioarsenates are highly sensitive to oxygen and pH. Therefore, e.g. arsenic speciation by means of HG-AAS is not suitable for sulfidic waters and can wrongly indicate a mixture of arsenite and arsenate. It has previously been supposed that the mobility as well as the toxicity of arsenic increase if the redox state decreases. For sulfidic waters the opposite is probably the case owing to the formation of thioarsenates. The toxicity of arsenite is due to the high reactivity of the As(III) towards sulfohydroxyl groups in proteins. Without a free electron pair and sulfur already incorporated, thioarsenates should be less toxic compared to arsenite. Arsenic can be mobilized out of contaminated soils in form of thioarsenates via infiltration of sulfide solutions or by input of sulfate and biodegradable organic matter. In the presence of iron, thioarsenates can be fixated in sulfidic aquifers as a minor substitute in mackinawite and biogenic pyrite or as arsenic pyrite. Bacterial sulfate reduction is a crucial factor for the mobilization and immobilization of arsenic in reduced aquifers. Considering the negative health impacts of arsenic for millions of people worldwide, as well as the implementation of the mentioned remediation strategies the arsenic-sulfur chemistry deserves closer attention.
Nengovhela, Ryneth Nkhangweleni. "The recovery of sulphur from waste gypsum." Thesis, 2008. http://upetd.up.ac.za/thesis/available/etd-01212009-152918.
Повний текст джерелаOn title page: Submitted in partial fulfilment of the requirements for the degree Philosophiae Doctor in Chemistry in the faculty of Natural and Agricultural Sciences of the University of Pretoria. Includes bibliographical references.
Книги з теми "Sulfur remediation"
Guidelines for the remediation and disposal of sulphur contaminated solid wastes. [Edmonton]: Alberta Environment, Environmental Regulatory Service, Chemicals Assessment and Management Division, 1996.
Знайти повний текст джерелаBarna, Michael Gregory. The use of sulfur hexafluoride as a vadose zone tracer to investigate active and passive soil vapor extraction. 1995.
Знайти повний текст джерелаЧастини книг з теми "Sulfur remediation"
Kuenen, J. G., A. J. M. Stams, and A. J. H. Janssen. "Application of sulfur cycle bacteria for the remediation of groundwater pollution." In Groundwater 2000, 377–78. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078593-186.
Повний текст джерелаChikkanna, Arpitha, and Devanita Ghosh. "Microbial Mineral Dissolution and Environmental Disasters." In Research Anthology on Emerging Techniques in Environmental Remediation, 611–37. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-3714-8.ch033.
Повний текст джерелаТези доповідей конференцій з теми "Sulfur remediation"
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.
Повний текст джерелаGhani, M., S. V. Slycken, E. Meers, F. M. G. Tack, F. Naz, and S. Ali. "Enhanced Phytoextraction of Cadmium and Zinc Using Rapeseed." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96362.
Повний текст джерелаValkanas, Michelle M., and Nancy Trun. "DOES CRYPTIC SULFUR CYCLING IN AN AMD PASSIVE REMEDIATION SYSTEM PREVENT THE REMOVAL OF HIGH SULFATE CONCENTRATIONS?" In GSA Annual Meeting in Phoenix, Arizona, USA - 2019. Geological Society of America, 2019. http://dx.doi.org/10.1130/abs/2019am-340636.
Повний текст джерелаLu, Su-fen, Bo Song, Feng-yan Fu, Yuan-yuan Yu, Dong Liu, and Xue-mei Zhong. "A Comparative Study of Physicochemical Properties Previous and after Remediation of Contaminated High-sulfur Soil in Huanjiang." In 2nd International Conference on Civil, Materials and Environmental Sciences. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/cmes-15.2015.157.
Повний текст джерелаKruger, Albert A. "Enhanced HLW Glass Formulations for the Waste Treatment and Immobilization Plant." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96028.
Повний текст джерелаKruger, Albert A. "High Waste Loading Glass Formulations for Hanford High-Aluminum High-Level Waste Streams." In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59388.
Повний текст джерелаSiripornadulsil, Surasak, and Wilailak Siripornadulsil. "Characterization of Cadmium-Resistant Bacteria and Their Application for Cadmium Bioremediation." In ASME 2009 12th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2009. http://dx.doi.org/10.1115/icem2009-16072.
Повний текст джерелаObata, Masamichi, Masaaki Kaneko, Michitaka Saso, Nobuhito Ogaki, Taichi Horimoto, and Toshikazu Waki. "Solidification of Simulated Liquid Waste of Primary Loop Resin Elution Process of PWR." In ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2010. http://dx.doi.org/10.1115/icem2010-40026.
Повний текст джерелаDepasse, Ysaline, Aline Jorden, Hatem Saadaoui, and Jan Haemers. "Thermoreact® - An Innovative Remediation Product for In-Situ Neutralization of Halogens, Sulphur, Phosphorus and Mercury during Thermal Desorption." In The 8th World Congress on New Technologies. Avestia Publishing, 2022. http://dx.doi.org/10.11159/icepr22.099.
Повний текст джерелаHata, Haruhi, Kaoru Yokoyama, and Noritake Sugitsue. "Systematic Chemical Decontamination Using IF7 Gas." In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59036.
Повний текст джерела