Results 231 to 240 of about 13,609 (251)

Extracting heavy metals from electroplating sludge by acid and bioelectrical leaching using Acidithiobacillus ferrooxidans

, 2020
Electroplating sludge (EPS) is a potential secondary resource; the heavy metals it contains show microbial toxicity in the bioleaching process and can be recycled as well. The aim of this work was to utilize optimized acid leaching to reduce the toxicity
P. Wu, Lijuan Zhang, Chaoba Lin, Xinxin Xie, Xiaoyu Yong, Xiayuan Wu, Jun Zhou, Honghua Jia, P. Wei   +8 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

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
openaire   +1 more source

Recovery of phosphorus from municipal wastewater treatment sludge through bioleaching using Acidithiobacillus thiooxidans.

Journal of Environmental Management, 2020
Conventional wastewater treatment plants remove phosphorus, which is captured in sewage sludge. Increasing attention is paid to suitable process pathways that allow recovery and recycling of phosphorus.
Yujin Lee, M. Sethurajan, J. van de Vossenberg, E. Meers, E. V. van Hullebusch   +4 more
semanticscholar   +1 more source

Combined effects of jarosite and visible light on chalcopyrite dissolution mediated by Acidithiobacillus ferrooxidans.

Science of the Total Environment, 2019
Although jarosite and visible light are important factors for the formation of acid mine drainage (AMD), the effects of combined jarosite and visible light on chalcopyrite biodissolution have not been explored until now.
Bao-jun Yang, Mo Lin, Jinghua Fang, Ruiyong Zhang, Wenlian Luo, Xingxing Wang, Rui Liao, Bai-qiang Wu, Jun Wang, M. Gan, Bin Liu, Yi Zhang, Xue-duan Liu, W. Qin, G. Qiu   +14 more
semanticscholar   +1 more source

The catalytic effect of copper ion in the bioleaching of arsenopyrite by Acidithiobacillus ferrooxidans in 9K culture medium

, 2020
Bioleaching pre-treatment of arsenopyrite (FeAsS), a common mineral occurring in deposits of gold ore that makes the extraction of gold difficult, has attracted significant attention recently due to its simple operation and environmental friendliness.
Zhang Yan, Qian Li, Xiaolian Liu, Huaqun Yin, Yong-bin Yang, Bin Xu, T. Jiang, Yinghe He   +7 more
semanticscholar   +1 more source

Effect of ferric ions on the anaerobic bio-dissolution of jarosites by Acidithiobacillus ferrooxidans.

Science of the Total Environment, 2020
Large amounts of jarosites are produced during zinc hydrometallurgy and bioleaching, as well as in acid sulfate soils and acid mine drainage environments.
Yuankun Yang, Shu Chen, Bin Wang, X. Wen, Hanke Li, R. Zeng   +5 more
semanticscholar   +1 more source

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
openaire   +1 more source

Response of Acidithiobacillus caldus toward suboptimal pH conditions

Extremophiles, 2013
Maintenance of a circumneutral intracellular pH is important for any organism. Acidophilic microorganisms thrive at low pH while maintaining their intracellular pH around 6.5. However, the mechanisms contributing to acidophile pH homeostasis are not well characterized.
Mangold S, Rao Jonna V, Dopson M
openaire   +3 more sources

The pyrite iron cycle catalyzed by Acidithiobacillus ferrooxidans

Journal of Mathematical Biology, 2013
In this paper, we study a model of the biotic pyrite iron cycle catalyzed by bacteria Acidithiobacillus ferrooxidans, in mining activity sites waste dumps. Chemical reactions, reaction rates and the population growth model are mostly taken from the existing literature. Analysis of the corresponding dynamical system shows the existence of up to four non-
Dumett, Miguel A., Keener, James P.
openaire   +2 more sources