Results 31 to 40 of about 1,776 (188)

Use of Desulfovibrio and Escherichia coli Pd-nanocatalysts in reduction of Cr(VI) and hydrogenolytic dehalogenation of polychlorinated biphenyls and used transformer oil [PDF]

, 2012
BACKGROUND Desulfovibrio spp. biofabricate metallic nanoparticles (e.g. ‘Bio-Pd’) which catalyse the reduction of Cr(VI) to Cr(III) and dehalogenate polychlorinated biphenyls (PCBs). Desulfovibrio spp.
Baxter-Plant, VS, Bennett, J. A., Deplanche, K, Humphries, AC, Macaskie, LE, Mikheenko, I. P., Redwood, MD, Wood, J.   +7 more
core   +1 more source

Effect of Carbon Sources on Pyrite-Arsenopyrite Concentrate Bio-oxidation and Growth of Microbial Population in Stirred Tank Reactors

Microorganisms, 2021
Tank bio-oxidation is a biohydrometallurgical technology widely used for metal recovery from sulfide concentrates. Since carbon availability is one of the key factors affecting microbial communities, it may also determine the rate of sulfide concentrate ...
Aleksandr Bulaev, Aleksandra Nechaeva, Yuliya Elkina, Vitaliy Melamud   +3 more
doaj   +1 more source

Ferric Iron Reduction in Extreme Acidophiles

Frontiers in Microbiology, 2022
Biochemical processes are a key element of natural cycles occurring in the environment and enabling life on earth. With regard to microbially catalyzed iron transformation, research predominantly has focused on iron oxidation in acidophiles, whereas iron
Luise Malik, Sabrina Hedrich
doaj   +1 more source

Geographic distribution of cadmium and its interaction with the microbial community in the Longjiang River: risk evaluation after a shocking pollution accident

Scientific Reports, 2017
A shocking Longjiang River cadmium pollution accident occurred in 2012, the effects of which on microbial communities remain unclear. Alkaline precipitation technology was applied for remediation, but concerns rose about the stability of this technology.
MingJiang Zhang, FuKe Huang, GuangYuan Wang, XingYu Liu, JianKang Wen, XiaoSheng Zhang, YaoSi Huang, Yu Xia   +7 more
doaj   +1 more source

Mechanism of fluoride inhibition on bioleaching bacteria and competitive complexation of ferric ions

工程科学学报, 2018
A bottleneck occurs in the application of bioleaching technology to fluoride-containing ore. The reason for this is that fluorine has a strong inhibitory effect on leaching bacteria with the dissolution of fluorine-containing gangue minerals.
LI Xiang, WEN Jian-kang, MO Xiao-lan, WU Biao, SHANG He, WU Ming-lin, WANG Dian-zuo, YANG Hong-ying   +7 more
doaj   +1 more source

Removal of silver (I) from aqueous solutions with clinoptilolite [PDF]

, 2006
The aim of the present work was to investigate the ability of natural zeolite, clinoptilolite, to remove silver ions from aqueous solution. Towards this aim, batch adsorption experiments were carried out and the eect of various parameters on this removal
Acar, Orhan, Akgul, Murat, Akgül, Murat, Karabakan, Abdulkerim, Karabakan, Abdülkerim, Yurum, Yuda, Yürüm, Yuda   +6 more
core   +1 more source

État du développement technologique en matière d'enlèvement des métaux des effluents industriels [PDF]

, 1999
Cette étude trace un profil des diverses technologies utilisées et en développement pour la séparation et/ou la récupération des métaux dans les effluents industriels.
Blais, J. F., Dufresne, S., Mercier, G.
core   +1 more source

Microbiological Advances in Biohydrometallurgy [PDF]

Minerals, 2016
The most exciting advances in biohydrometallurgy are occurring in the field of microbiology. The two main technologies employed in biohydrometallurgy, agitated tanks for the processing of refractory concentrates and heaps and dumps for the processing of low-grade ores, are technologically sound and widely practised at commercial scale, but their ...
openaire   +1 more source

Scandium extraction from silicates by hydrometallurgical process at normal pressure and temperature

Journal of Materials Research and Technology, 2020
Silicate is an important rock-forming mineral. In this work, a method called “sulfuric acid curing” was proposed, aiming to extract rare earth element scandium from silicates.
Yanjun Zhang, Hongbo Zhao, Menglin Sun, Yisheng Zhang, Xiaoyu Meng, Luyan Zhang, Xin Lv, Sarangerel Davaasambuu, Guanzhou Qiu   +8 more
doaj   +1 more source

Options for Increasing the Rate of Bioleaching of Arsenic Containing Copper Concentrate

Microbiology Research, 2022
In the present work the effect of alkaline sulfide leaching (ASL) on the extraction of copper and zinc from low-grade copper concentrate containing chalcopyrite, tennantite, sphalerite, and pyrite during batch and continuous bioleaching experiments was ...
Alena Artykova, Yuliya Elkina, Aleksandra Nechaeva, Vitaliy Melamud, Anna Boduen, Aleksandr Bulaev   +5 more
doaj   +1 more source