Results 171 to 180 of about 2,517 (213)

Biofiltration of H2S-rich biogas using Acidithiobacillus thiooxidans

Clean Technologies and Environmental Policy, 2015
Biogas has limited use in energy generation mainly due to the presence of hydrogen sulfide (H2S). Currently, most of the techniques employed in the removal of H2S from biogas have a chemical base, with high material costs and generating secondary pollutants.
Bruno Carlesso Aita, Flávio Dias Mayer, Diana Tomazi Muratt, Michel Brondani, Stefen Barbosa Pujol, Laura Bedin Denardi, Ronaldo Hoffmann, Djalma Dias da Silveira   +7 more
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Bioleaching of chromium from tannery sludge by indigenous Acidithiobacillus thiooxidans

Journal of Hazardous Materials, 2007
Chromium in tannery sludge will cause serious environmental problems and is toxic to organisms. The acidophilic sulfur-oxidizing Acidithiobacillus thiooxidans can leach heavy metals form urban and industrial wastes. This study examined the ability of an indigenous sulfur-oxidizing A. thiooxidans to leach chromium from tannery sludge. The results showed
Yuan-Shan, Wang, Zhi-Yan, Pan, Jian-Min, Lang, Jian-Miao, Xu, Yu-Guo, Zheng   +4 more
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Bioleaching of low-grade copper sulfide ores by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

Journal of Central South University, 2014
The grown conditions of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans were investigated, and then experiments were conducted to research the bioleaching behaviors of crude ore of copper sulfide and hand-picked concentrates of chalcopyrite by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans.
Jun Wang, Shan Zhu, Yan-sheng Zhang, Hong-bo Zhao, Ming-hao Hu, Cong-ren Yang, Wen-qing Qin, Guan-zhou Qiu   +7 more
openaire   +1 more source

Bioleaching of metals from steel slag by Acidithiobacillus thiooxidans culture supernatant

Chemosphere, 2014
The generation of 300–500 kg of slag per ton of the steel produced is a formidable amount of solid waste available for treatment. They usually contain considerable quantities of valuable metals. In this sense, they may become either important secondary resource if processed in eco-friendly manner for secured supply of contained metals or potential ...
Hong, Hocheng, Cheer, Su, Umesh U, Jadhav   +2 more
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Bioleaching of arsenic from highly contaminated mine tailings using Acidithiobacillus thiooxidans

Journal of Environmental Management, 2015
The behavior of arsenic (As) bioleaching from mine tailings containing high amount of As (ca. 34,000 mg/kg) was investigated using Acidithiobacillus thiooxidans to get an insight on the optimal conditions that would be applied to practical heap and/or tank bioleaching tests. Initial pH (1.8-2.2), temperature (25-40 °C), and solid concentration (0.5-4.0%
Eunseong Lee, Yosep Han, Jeonghyun Park, Jeongsik Hong, Rene A. Silva, Seungkon Kim, Hyunjung Kim   +6 more
openaire   +2 more sources

Solubilization of a K-silicate rock by Acidithiobacillus thiooxidans

Minerals Engineering, 2019
Abstract Sulfur-oxidizing bacteria are used in bioleaching processes to recover metals such as gold and copper. The mechanisms for solubilizing metals used by the bacterium Acidithiobacillus thiooxidans involve sulfur oxidation reactions, with the consequent formation of acid.
Patrícia Cardoso Matias, Edson Marcio Mattiello, Wedisson Oliveira Santos, Jorge Luis Badel, Víctor Hugo Alvarez V.   +4 more
openaire   +1 more source

Treatment for woolscouring effluent through bioacidification by acidithiobacillus thiooxidans

International Journal of Environment and Pollution, 2010
In this study, a promising process called bioacidification was used to remove organic pollutant from Woolscouring Effluent (WSE) by emulsion destabilisation. Chemostat experiments of bioacidification treatment inoculated with Acidithiobacillus thiooxidans were operated at high wastewater recycle ratios to achieve shorter Hydraulic Retention Time (HRT).
Feng He, Lixiang Zhou
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A comparison of bioleaching of covellite using pure cultures of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans or a mixed culture of Leptospirillum ferrooxidans and Acidithiobacillus thiooxidans

Hydrometallurgy, 2003
The aim of this investigation was to determine the efficacy of covellite bioleaching using pure cultures of Acidithiobacillus ferrooxidans or Acidithiobacillus thiooxidans and a mixed culture composed of At. thiooxidans and Leptospirillum ferrooxidans. The experiments were carried out in shake flasks with or without iron(II) (1 g/L as ferrous sulphate)
openaire   +1 more source

Bioleaching of metals from printed wire boards by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans and their mixture

Journal of Hazardous Materials, 2009
Bioleaching processes were used to mobilize metals from printed wire boards (PWBs). The bacteria Acidithiobacillus ferrooxidans (A. ferrooxidans) and Acidithiobacillus thiooxidans (A. thiooxidans) isolated from an acidic mine drainage were grown and acclimated in presence of PWBs and then used as bioleaching bacteria to solubilize metals from PWBs. The
Jingwei, Wang, Jianfeng, Bai, Jinqiu, Xu, Bo, Liang   +3 more
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Adhesion to metal sulfide surfaces by cells of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans

Hydrometallurgy, 2006
Abstract Attachment of four strains of Acidithiobacillus ferrooxidans to pyrite, chalcopyrite, galena, sphalerite or quartz was found to be mineral-selective. The bacterial extracellular polymeric substances (EPS) are responsible for mediating this process. Attachment of cells of A.
Harneit, Kerstin, Goeksel, A., Kock, D., Klock, J.h, Gehrke, Tilman, Sand, Wolfgang   +5 more
openaire   +1 more source