Results 1 to 10 of about 1,362,804 (251)

Investigation of gold content in the bio-oxidation process [PDF]

E3S Web of Conferences, 2023
In this study, the process of bio-oxidation of flotation concentrate from the flotation of gold-sulfide ores and sorption cyanidation of the bio-oxidation product were analyzed, and the content of dispersed gold in pyrite, arsenopyrite, and carbonaceous ...
Nurmurodov Tulkin, Saidova Nodira, Ashurov Oybek, Rakhimova Gulrukh, Fuzaylov Omon, Narzullaev Jakhongir   +5 more
doaj   +2 more sources

Pool bio-oxidation and fitting analysis of low-grade arsenic-containing refractory gold ore

Green Chemical Engineering
To overcome the limitations of geography, climate, and ore characteristics on the ore beneficiation process, bio-oxidation studies on low-grade arsenic-bearing refractory gold ore by pool leaching were carried out, as well as process fitting analysis ...
Jiafeng Li, Linlin Tong
exaly   +3 more sources

Gold Recovery from Cyanidation Tailings Using Flotation Process [PDF]

Archives of Metallurgy and Materials, 2022
The gold recovery from cyanidation tailings was only 4.01% with the general flotation process, the surface analyses of flotation products were performed, and the results showed that the poor gold recovery with general flotation process was due to the ...
Huang Zhongsheng, Yang Tianzu
doaj   +1 more source

Application of Bio-Oxidation in Leaching of a Low-Grade Primary Gold Ore in Inner Mongolia

Kuangchan zonghe liyong, 2022
Bio-oxidation leaching test was conducted on a low-grade primary gold mine in Inner Mongolia. The acid consumption of ore, cyanidation, bio-oxidation stirred leaching, column leaching, add sulfur and sulfur concentrate to reduce acid consumption , and ...
Yongzhang Jian
doaj   +1 more source

Prediction for Air Input of Bio-oxidation Tank Based on Dynamic Data Driven [PDF]

Jisuanji gongcheng, 2018
For the open-loop control,strong time delay and low prediction precision in the air input system of bio-oxidation tank,a new method based on the dynamic data driven for predicting air input of bio-oxidation tank is proposed in this paper.Firstly,a state ...
SUN Zhenhua,NAN Xinyuan,CAI Xin
doaj   +1 more source

2,2-Bis(4-Hydroxyphenyl)-1-Propanol—A Persistent Product of Bisphenol A Bio-Oxidation in Fortified Environmental Water, as Identified by HPLC/UV/ESI-MS

Toxics, 2021
Biodegradation of bisphenol A in the environmental waters (lake, river, and sea) has been studied on the base of fortification of the samples taken and the biodegradation products have been analyzed using HPLC/UV/ESI-MS.
Małgorzata Drzewiecka, Monika Beszterda, Magdalena Frańska, Rafał Frański   +3 more
doaj   +1 more source

Manganese Pollution and Its Remediation: A Review of Biological Removal and Promising Combination Strategies

Microorganisms, 2022
Manganese (Mn), as a cofactor of multiple enzymes, exhibits great significance to the human body, plants and animals. It is also a critical raw material and alloying element.
Rongrong Wu, Fangting Yao, Xiaoya Li, Chongjing Shi, Xue Zang, Xiao Shu, Hengwei Liu, Wenchao Zhang   +7 more
doaj   +1 more source

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

Selective Production of Xylooligosaccharides by Xylan Hydrolysis Using a Novel Recyclable and Separable Furoic Acid

Frontiers in Bioengineering and Biotechnology, 2021
Xylooligosaccharides (XOS) have gained considerable attention worldwide as prebiotics due to their immune-strengthening activity and beneficial gut bacteria development and can be produced from xylan-rich resources by acid hydrolysis.
Jianglin Zhao, Jianglin Zhao, Xiaotong Zhang, Xiaotong Zhang, Xin Zhou, Xin Zhou, Xin Zhou, Yong Xu, Yong Xu   +8 more
doaj   +1 more source

Study of Factors Affecting the Copper Ore Leaching Process

ChemEngineering, 2023
This paper provides an overview of hydrometallurgical copper extraction studies in which liquid extraction technology has been used with four copper deposits of different compositions.
Aigul Koizhanova, Bagdaulet Kenzhaliyev, David Magomedov, Emil Kamalov, Mariya Yerdenova, Akbota Bakrayeva, Nurgali Abdyldayev   +6 more
doaj   +1 more source