Results 151 to 160 of about 8,912 (205)

Reduction of vanadium(V) with Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans

Bioresource Technology, 2004
Biotechnological leaching has been proposed as a suitable method for extraction of vanadium from spent catalysts and oil ash. In the biological leaching process, the vanadium(V) can be reduced to vanadium(IV), which is a less toxic and more soluble form of the vanadium.
Katarina, Bredberg, Hans T, Karlsson, Olle, Holst   +2 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

Overexpression of the Licanantase Protein in Acidithiobacillus ferrooxidans Leads to Enhanced Bioleaching of Copper Minerals

ACS Sustainable Chemistry and Engineering, 2022
Scott Banta, Alan West, Yuta Inaba
exaly   +2 more sources

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
openaire   +2 more sources

Dispersion of sulfur creates a valuable new growth medium formulation that enables earlier sulfur oxidation in relation to iron oxidation in Acidithiobacillus ferrooxidans cultures

Biotechnology and Bioengineering, 2021
Acidithiobacillus ferrooxidans is an acidophilic chemolithoautotroph that is commonly reported to exhibit diauxic population growth behavior where ferrous iron is oxidized before elemental sulfur when both are available, despite the higher energy content
Y. Inaba, Timothy Kernan, A. West, S. Banta   +3 more
semanticscholar   +1 more source

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

Development of a CRISPR interference system for selective gene knockdown in Acidithiobacillus ferrooxidans.

Journal of Bioscience and Bioengineering, 2021
Acidithiobacillus ferrooxidans is an iron-oxidizing chemolithotroph used for bioleaching of precious metals and is also regarded as a potential host for bioelectrochemical production of value-added chemicals.
Shohei Yamada, Yusuke Suzuki, Atsushi Kouzuma, Kazuya Watanabe   +3 more
semanticscholar   +1 more source

Bioleaching of chalcopyrite by Acidithiobacillus ferrooxidans

Minerals Engineering, 2013
Acidithiobacillus ferrooxidans (A. ferrooxidans) was selected to experimentally study the effects of bacteria on the oxidation of chalcopyrite. The results indicated that A. ferrooxidans remarkably promoted the oxi- dation of chalcopyrite. The pH of the cell broth medium was observed to increase and then decrease dur- ing the bioleaching experiment ...
XingQing Zhao, RuCheng Wang, XianCai Lu, JianJun Lu, ChengXiang Li, Juan Li   +5 more
openaire   +1 more source

Effect of polyvinyl pyrrolidone on chalcopyrite bioleaching with Acidithiobacillus ferrooxidans

Hydrometallurgy, 2021
Chalcopyrite (CuFeS2) is the most abundant copper-bearing mineral in nature. Large amounts of low-grade chalcopyrite ores cannot easily be utilized due to technical and economic limitations, which lead to an enormous waste of resources.
Hao Zhang, D. Wei, Wengang Liu, Duanxu Hou, Ruiyang Zhang   +4 more
semanticscholar   +1 more source

Redox stress response and UV tolerance in the acidophilic iron-oxidizing bacteria Leptospirillum ferriphilum and Acidithiobacillus ferrooxidans.

Research in Microbiology, 2021
The oxidative stress response represents a sum of antioxidative mechanisms that are essential for determining the adaptation and abundance of microorganisms in the environment.
R. Farías, Javiera Norambuena, A. Ferrer, Pamela Y. Camejo, C. Zapata, R. Chávez, O. Orellana, G. Levicán   +7 more
semanticscholar   +1 more source