Results 31 to 40 of about 356 (169)

Shifts in the Microbial Populations of Bioleach Reactors Are Determined by Carbon Sources and Temperature

Biology, 2023
In the present study, the effect of additional carbon sources (carbon dioxide and molasses) on the bio-oxidation of a pyrite–arsenopyrite concentrate at temperatures of 40–50 °C was studied, and novel data regarding the patterns of the bio-oxidation of ...
Aleksandr Bulaev, Vitaliy Kadnikov, Yulia Elkina, Aleksey Beletsky, Vitaliy Melamud, Nikolai Ravin, Andrey Mardanov   +6 more
doaj   +1 more source

Microbial community and metabolic pathway succession driven by changed nutrient inputs in tailings: effects of different nutrients on tailing remediation

Scientific Reports, 2017
To solve the competition problem of acidophilic bacteria and sulfate-reducing bacteria in the practical application of mine tailing bioremediation, research into the mechanisms of using different nutrients to adjust the microbial community was conducted.
Mingjiang Zhang, Xingyu Liu, Yibin Li, Guangyuan Wang, Zining Wang, Jiankang Wen   +5 more
doaj   +1 more source

Flotation separation of chalcopyrite and molybdenite by externally controlled potential method

工程科学学报, 2019
Chalcopyrite-molybdenite separation has always been a major difficulty in mineral processing. At present, chemical agents are commonly used to regulate the pulp potential.
SONG Kun, SONG Yong-sheng, ZHANG Qi-dong, LI Wen-juan, LE Guan   +4 more
doaj   +1 more source

Recycling of Lithium Batteries—A Review

Energies, 2022
With the rapid development of the electric vehicle industry in recent years, the use of lithium batteries is growing rapidly. From 2015 to 2040, the production of lithium-ion batteries for electric vehicles could reach 0.33 to 4 million tons.
Xiaowei Duan, Wenkun Zhu, Zhongkui Ruan, Min Xie, Juan Chen, Xiaohan Ren   +5 more
doaj   +1 more source

Effect of desliming on the flotation of a complax copper ore from China

MATEC Web of Conferences, 2016
The complex copper oxide ore sample was taken from Deerni copper deposit, Qinghai Province of China. Batch flotation tests had been conducted to upgrade the copper concentrate by conventional amyl xanthate reagents under 73% -74 μm of the particle size ...
Chen Yong, Song Yong Sheng, Li Wen Juan, Zhou Gui Ying   +3 more
doaj   +1 more source

Bridging the Bottlenecks in Biohydrometallurgy: Enhancing Kinetics, Resource Utilization, and Sustainability for Scalable Metal Recovery [PDF]

E3S Web of Conferences
Biohydrometallurgy provides eco-friendly alternatives for extracting metals from primary and secondary resources. However, its industrial scalability is limited due to slow bioleaching kinetics, a lack of process adaptability to complex waste, and ...
Aachhera Sugandha
doaj   +1 more source

Isolation and Identification of Uranium Tolerant Phosphate-Solubilizing Bacillus spp. and Their Synergistic Strategies to U(VI) Immobilization

Frontiers in Microbiology, 2021
The remediation of uranium (U) through phosphate-solubilizing bacteria (PSB) is an emerging technique as well as an interesting phenomenon for transforming mobile U into stable minerals in the environment.
Juan Zhong, Juan Zhong, Juan Zhong, Xuewu Hu, Xuewu Hu, Xuewu Hu, Xingyu Liu, Xingyu Liu, Xinglan Cui, Xinglan Cui, Ying Lv, Ying Lv, Chuiyun Tang, Chuiyun Tang, Mingjiang Zhang, Mingjiang Zhang, Hongxia Li, Hongxia Li, Lang Qiu, Weimin Sun   +19 more
doaj   +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

Recycling of mixed cathode lithium‐ion batteries for electric vehicles: Current status and future outlook

Carbon Energy, Volume 2, Issue 1, Page 6-43, March 2020., 2020
This work reviews lithium‐ion battery recycling developments in the literature in the context of meeting demands for the growing electric vehicle (EV) market. Practical challenges associated with the collection and disassembly of EV battery packs are also discussed.
Tyler Or, Storm W. D. Gourley, Karthikeyan Kaliyappan, Aiping Yu, Zhongwei Chen   +4 more
wiley   +1 more source