Results 1 to 10 of about 3,405 (219)

Biooxidation of Arsenopyrite by Acidithiobacillus ferriphilus QBS 3 Exhibits Arsenic Resistance Under Extremely Acidic Bioleaching Conditions [PDF]

Biology
As arsenopyrite is a typical arsenic-bearing sulfide ore, the biooxidation process of arsenopyrite is of great significance for the extraction of gold from arsenic-bearing gold ores and the generation of arsenic-bearing acid mine drainage.
Run Liu, Siyu Liu, Xiaoxuan Bai, Shiping Liu, Yuandong Liu   +4 more
doaj   +3 more sources

Biooxidation of a Pyrite-Arsenopyrite Concentrate Under Stressful Conditions [PDF]

Microorganisms
Gold recovery from refractory pyrite-arsenopyrite concentrates using stirred tank reactor biooxidation is widely applied worldwide. Therefore, studies to address the characteristic problem of this technology are urgent.
Aleksandr Bulaev, Alena Artykova, Anna Diubar, Aleksandr Kolosoff, Vitaliy Melamud, Tatiana Kolganova, Alexey Beletsky, Andrey Mardanov   +7 more
doaj   +3 more sources

Arsenic Release from Various Sizes of Excavated Crushed Rock Mixed with Soil at Various Ratios under Three Mass Water Contents for Cropland [PDF]

Toxics, 2023
The purpose of this experiment was to investigate the feasibility of treating arsenopyrite-containing excavated crushed rock (ECR) in cropland by examining the amounts of arsenic released from various sizes of ECR mixed with soils at different ratios ...
Kyo-Suk Lee, Gil-Yong Suh, Doug-Young Chung   +2 more
doaj   +2 more sources

Current Trends in Metal Biomining with a Focus on Genomics Aspects and Attention to Arsenopyrite Leaching—A Review [PDF]

Microorganisms, 2023
The presented review is based on scientific microbiological articles and patents in the field of biomining valuable metals. The main attention is paid to publications of the last two decades, which illustrate some shifts in objects of interest and modern
Tatiana Abashina, Mikhail Vainshtein
doaj   +2 more sources

Flotation enrichment of resistant gold ores [PDF]

E3S Web of Conferences, 2020
Ores of the Vasilkovsky deposit include arsenopyrite, pyrite, pyrrhotite, marcasite, gold, chalcopyrite, sphalerite, galena, faded ore (tennantite)S, bismuthine, native bismuth, lellingite, molybdenite, cubanite, bornite, antimonite, relict minerals ...
Askarova Gulzhan, Shautenov Mels, Nogaeva Kulzhamal   +2 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

Arsenic release from arsenopyrite weathering in acid mine drainage: Kinetics, transformation, and effect of biochar

Environment International, 2022
Arsenopyrite (FeAsS) oxidative dissolution provides an important source for the occurrence of high arsenic in acid mine drainage (AMD). Biochar is a potent material that can dramatically sequestrate an array of heavy metals in water.
Ling Cen, Hongguang Cheng, Qingyou Liu, Shuai Wang, Xi Wang   +4 more
doaj   +1 more source

THE CONSTITUTION OF ARSENOPYRITE. [PDF]

Journal of the American Chemical Society, 1897
n ...
Starke, F. W., Shock, H. L., Smith, Edgar F.   +2 more
openaire   +1 more source

Pyrite-promoted dissolution of arsenopyrite in the presence of Sulfobacillus thermosulfidooxidans

Journal of Materials Research and Technology, 2020
The weathering of arsenopyrite in mine wastes is crucial for the formation of arsenic-containing acid mine drainage (AMD). Arsenopyrite is always associated with pyrite.
Sha Deng, Guoshuai He, Wu Bichao, Gu Guohua   +3 more
doaj   +1 more source

Carrier-microencapsulation of arsenopyrite using Al-catecholate complex: nature of oxidation products, effects on anodic and cathodic reactions, and coating stability under simulated weathering conditions

Heliyon, 2020
Mining activities often generate large amounts of sulfide-rich wastes containing arsenopyrite (FeAsS), which when dissolved releases toxic arsenic (As) and generates acid mine drainage (AMD) that are both disastrous to the environment.
Ilhwan Park, Carlito Baltazar Tabelin, Kensuke Seno, Sanghee Jeon, Hiroyuki Inano, Mayumi Ito, Naoki Hiroyoshi   +6 more
doaj   +1 more source