Biooxidation of Arsenopyrite by Acidithiobacillus ferriphilus QBS 3 Exhibits Arsenic Resistance Under Extremely Acidic Bioleaching Conditions [PDF]
BiologyAs 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 +4 more
doaj +3 more sources
Biooxidation of a Pyrite-Arsenopyrite Concentrate Under Stressful Conditions [PDF]
MicroorganismsGold 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 +7 more
doaj +3 more sources
Formation of surface protective coatings on arsenopyrite using Al-catecholate complex and its mode of inhibition of arsenopyrite oxidation [PDF]
MATEC Web of Conferences, 2019 Arsenopyrite is the most common arsenic-bearing sulfide mineral in nature. It is readily oxidized and releases toxic arsenic (As) into the environment when exposed to atmospheric conditions via anthropogenic activities like mining, mineral processing ...
Park Ilhwan +6 more
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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 +2 more
doaj +2 more sources
Coupled intra- and inter-tunnel short-range order in hollandites: a case study of mannardite Ba[(Ti<sup>4+</sup>)<sub>6</sub>(V<sup>3+</sup>)<sub>2</sub>]O<sub>16</sub>. [PDF]
Acta Crystallogr B Struct Sci Cryst Eng MaterSingle‐crystal X‐ray diffuse scattering combined with Monte Carlo simulations and 3D‐ΔPDF analysis reveals complex short‐range order in mannardite, involving coupled Ba–Ba interactions within and between tunnels and framework relaxation.Mannardite, Ba[(Ti4+)6(V3+)2]O16, a mineral of the hollandite supergroup, is characterized by a tunnel structure ...
Schmidt EM +5 more
europepmc +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 +2 more
doaj +1 more source
The Role of Hydrogen Peroxide in Arsenopyrite Depression and Its Response Mechanism. [PDF]
ACS OmegaThe oxidation depression of arsenopyrite has been widely used in the sulfide ore flotation process to improve the quality of the final product. Hydrogen peroxide (H2O2) has been successfully applied in the oxidation inhibition of arsenopyrite, although ...
Zhang X, He B, Wang Y, Wang Z, Li H.
europepmc +2 more sources
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 +3 more
doaj +1 more source
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 +4 more
doaj +1 more source
Phase relations of arsenian pyrite and arsenopyrite
, 2021 Arsenian pyrite containing above 1 wt% As plays a crucial role in deposition and deportment of Au and other chalcophile elements. The importance of arsenian pyrite led to theoretical and experimental studies that examined properties and genesis of the ...
Large, Ross R. +7 more
core +2 more sources