Results 181 to 190 of about 4,911 (215)

Surface properties of pyrite in the course of bioleaching by pure culture of Acidithiobacillus ferrooxidans and a mixed culture of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

Hydrometallurgy, 2011
Abstract Both Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans attached to pyrite rapidly, reaching the adsorption equilibrium in 20 – 25 min. Furthermore, the adsorption content of substrate-grown bacteria was larger than that of solution-grown ones.
Hui Liu, Guohua Gu, Yangbao Xu
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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
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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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Organoarsenic resistance and bioremoval of Acidithiobacillus ferrooxidans

Bioresource Technology, 2010
The tolerance and bioremoval of dimethylarsinic acid (DMA(V)) by Acidithiobacillus ferrooxidans (A. ferrooxidans) were investigated here. The inhibitory concentration (IC) of DMA(V) was determined for A. ferrooxidans. The effects of various parameters such as pH, contact time, initial DMA(V) concentration, biosorbent dose and temperature were ...
Lei, Yan, Huanhuan, Yin, Shuang, Zhang, Jiangong, Duan, Yongquan, Li, Peng, Chen, Hongyu, Li   +6 more
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Bioleaching of anilite using pure and mixed culture of Acidithiobacillus ferrooxidans and Acidithiobacillus caldus

Minerals Engineering, 2007
Abstract Anilite oxidation was evaluated with two acidophilic thiobacilli that are important in bioleaching processes. The experiments were carried out in shake flasks in the absence and presence of energy sources such as 2 g/L powdered sulphur and 10 g/L Fe 2+ (as ferrous sulphate) at pH 2.0, 150 rpm, 35 °C. Tests showed that copper extraction in
Hai-na Cheng, Yue-hua Hu
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Acidithiobacillus ferrooxidans and its potential application

Extremophiles, 2018
The widely distributed Acidithiobacillus ferrooxidans (A. ferrooxidans) lives in extremely acidic conditions by fixing CO2 and nitrogen, and by obtaining energy from Fe2+ oxidation with either downhill or uphill electron transfer pathway and from reduced sulfur oxidation. A.
Shuang, Zhang, Lei, Yan, Weijia, Xing, Peng, Chen, Yu, Zhang, Weidong, Wang   +5 more
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Acidithiobacillus thiooxidans and its potential application

Applied Microbiology and Biotechnology, 2019
Acidithiobacillus thiooxidans (A. thiooxidans) is a widespread, mesophilic, obligately aerobic, extremely acidophilic, rod-shaped, and chemolithoautotrophic gram-negative gammaproteobacterium. It can obtain energy and electrons from the oxidation of reducible sulfur, and it can fix carbon dioxide and assimilate nitrate, nitrite, and ammonium to satisfy
Lei Yang, Dan Zhao, Jian Yang, Weidong Wang, Peng Chen, Shuang Zhang, Lei Yan   +6 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
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Bioleaching of sphalerite by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans cultured in 9K medium modified with pyrrhotite

Journal of Central South University of Technology, 2008
Elective culture of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans in 9K medium modified with pyrrhotite was studied. Bioleaching of flotation concentrate of sphalerite by the selected bacteria was carried out. The results show that the microorganisms cultured by pyrrhotite are a mixture of Acidithiobacillus ferrooxidans and ...
Song Chen, Guan-zhou Qiu, Wen-qing Qin, Zhuo-yue Lan   +3 more
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Comparative study of inorganic arsenic resistance of several strains of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans

Hydrometallurgy, 2009
The growth characteristics of several strains of Acidithiobacillus thiooxidans and Acidithiobacillus ferrooxidans were studied in the presence of soluble inorganic arsenic(III) and (V) with regard to media pH changes, total bacterial populations and sulfur oxidation rates.
Feifan Leng, Kaiyan Li, Xiaoxue Zhang, Yongquan Li, Yan Zhu, Jianfei Lu, Hongyu Li   +6 more
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