Results 161 to 170 of about 2,517 (213)

The role of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans in arsenic bioleaching from soil

Environmental Geochemistry and Health, 2013
Bioleaching of As from the soil in an abandoned Ag-Au mine was carried out using Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans. A. ferrooxidans is an iron oxidizer and A. thiooxidans is a sulfur oxidizer. These two microbes are acidophilic and chemoautotrophic microbes.
Myoung-Soo, Ko, Hyun-Sung, Park, Kyoung-Woong, Kim, Jong-Un, Lee   +3 more
openaire   +2 more sources

Oxidation of isochemical FeS2 (marcasite–pyrite) by Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans

Minerals Engineering, 2007
Abstract A research-grade mineral sample that contained marcasite and pyrite (FeS 2 ) was subjected to the oxidation by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans . Oxidation of FeS 2 by A. ferrooxidans produced acid, and the redox potential increased with sulfide dissolution and the oxidation of Fe 2+ .
Garcia, Oswaldo, Bigham, Jerry M., Tuovinen, I. H.   +2 more
openaire   +2 more sources

Heavy metals recovery from spent catalyst using Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

2010 International Conference on Chemistry and Chemical Engineering, 2010
In this investigation, a spent processing catalyst from one of the oil refineries in Iran was initially characterized physically and chemically. Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans were used to mobilize aluminum, cobalt, molybdenum and nickel from hazardous spent catalysts.
R. Mafi Gholami, S. M. Borghei, S. M. Mousavi   +2 more
openaire   +1 more source

Oxidation of chalcopyrite by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans in shake flasks

Process Biochemistry, 2002
Abstract Chalcopyrite oxidation was evaluated with two acidophilic thiobacilli that are important in bioleaching processes. Acidithiobacillus thiooxidans in pure culture did not oxidize CuFeS2 but oxidized externally added S0 in the presence of CuFeS2.
Bevilaqua, D., Leite, ALLC, Garcia, O., Tuovinen, O. H.   +3 more
openaire   +2 more sources

Adhesion forces between cells of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans or Leptospirillum ferrooxidans and chalcopyrite

Colloids and Surfaces B: Biointerfaces, 2012
The efficiency of copper leaching is improved by bacteria attached to chalcopyrite. Therefore, the study of the attachment mechanism to control leaching is important. The adhesion of three species of leaching microorganisms including Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans and Leptospirillum ferrooxidans to chalcopyrite was ...
Zhu, Jianyu, Li, Qian, Jiao, Weifeng, Jiang, Hao, Sand, Wolfgang, Xia, Jinlan, Liu, Xueduan, Qin, Wenqing, Qiu, Guanzhou, Hu, Yuehua, Chai, Liyuan   +10 more
openaire   +2 more sources

Co-inoculation with beneficial microorganisms enhances tannery sludge bioleaching with Acidithiobacillus thiooxidans

Environmental Science and Pollution Research, 2022
Bioleaching of tannery sludge is an efficient and environmentally friendly way for chromium (Cr) removal, which supports the sustainable development of the leather industry. Acidithiobacillus thiooxidans has been reported effective in Cr bioleaching of tannery sludge. However, little is known about whether the presence of other benefiting species could
Jian, Yao, Miaoxiao, Wang, Lu, Wang, Min, Gou, Jing, Zeng, Yue-Qin, Tang   +5 more
openaire   +2 more sources

Removal of hydrogen sulfide by sulfate-resistant Acidithiobacillus thiooxidans AZ11

Journal of Bioscience and Bioengineering, 2006
Toxic H2S gas is an important industrial pollutant that is applied to biofiltration. Here, we examined the effects of factors such as inlet concentration and space velocity on the removal efficiency of a bacterial strain capable of tolerating high sulfate concentrations and low pH conditions.
Eun Young, Lee, Nae Yoon, Lee, Kyung-Suk, Cho, Hee Wook, Ryu   +3 more
openaire   +2 more sources

Purification and Properties of Thiosulfate Dehydrogenase from Acidithiobacillus thiooxidans JCM7814

Bioscience, Biotechnology, and Biochemistry, 2001
A key enzyme of the thiosulfate oxidation pathway in Acidithiobacillus thiooxidans JCM7814 was investigated. As a result of assaying the enzymatic activities of thiosulfate dehydrogenase, rhodanese, and thiosulfate reductase at 5.5 of intracellular pH, the activity of thiosulfate dehydrogenase was measured as the key enzyme.
K, Nakamura, M, Nakamura, H, Yoshikawa, Y, Amano   +3 more
openaire   +2 more sources

Biomachining rates of various metals by Acidithiobacillus thiooxidans

International Journal of Surface Science and Engineering, 2012
The evaluation of a potential of a microorganism for the biomachining technology is conducted in the current study. As the fundamental step, the specific metal removal rates (SMRR) of copper, nickel and aluminium in use of different level of cell concentration of Acidithiobacillus thiooxidans (At.
Hong Hocheng, U.U. Jadhav, J.H. Chang
openaire   +1 more source

Monitoring Acidithiobacillus Thiooxidans Biofilm Formation on Graphite Surface

ECS Meeting Abstracts, 2018
Biofilm formation has been studied to understand modifications in electrode interface to create new monitoring devices related with different fields as medical, environmental and industrial. In biomining industry, specifically in bioleaching processes, Acidithiobacillus thiooxidans is an acidophilic bacterium that enhances ...
Marcela Méndez-Tovar, J Viridiana García-Meza, I González   +2 more
openaire   +1 more source