The use of catalytic ions in bioleaching

Ballester, A.; González, F.; Blázquez, M.L.; Gómez, C.; Mier, J. L.

doi:10.1016/0304-386x(92)90010-w

Cited by 47 publications

(14 citation statements)

References 19 publications

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“…Among these technologies, those based on the use of microorganisms are of particular interest. A number of microorganisms have the capacity to solubilize heavy metals present in aqueous solution -bioleaching - [1], are able to adsorb heavy metals through their cellular structures -biosorption - [2], or can precipitate heavy metals in solution to facilitate removal of the contaminant -bioprecipitation - [3].…”

Section: Introductionmentioning

confidence: 99%

Influence of heavy metals on growth and ferrous sulphate oxidation by Acidithiobacillus ferrooxidans in pure and mixed cultures

Cabrera

Gómez

Cantero

2005

Process Biochemistry

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Section: Introductionmentioning

confidence: 99%

Influence of heavy metals on growth and ferrous sulphate oxidation by Acidithiobacillus ferrooxidans in pure and mixed cultures

Cabrera

Gómez

Cantero

2005

Process Biochemistry

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“…2Age S + 02 + 4H ÷ = 4Ag + + 2S ° + 2H: 0 (5) Ag ÷ ions generated by reaction (5) can rapidly react with chalcopyrite to displace the surface copper through the following surface chemical reaction:…”

Section: Discussionmentioning

confidence: 99%

Influences of silver sulfide on the bioleaching of chalcopyrite, pyrite and chalcopyrite-containing ore

Wang

Qiu

et al. 2002

J Cent. South Univ. Technol.

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Influences of silver sulfide on the bioleaching of chalcopyrite, pyrite and chalcopyrite-containing ore HU Yue-hua 1 (i~)] ~4~), WANG Jun 2 ( 5E ~), QIU Cuan-zhou' ( ~] ), WANG Dian-zuo' (SE ~/9~) Abstract: The effects of silver sulfide (AgzS) on the bioleaching of chalcopyrite and pyrite were investigated in this paper. It has been shown that Aga S enhanced the yields of bioleaching of chalcopyrite but inhibited the bio-oxidation of pyrite. The addition of Ag2 S selectively increased the copper dissolution from the chalcopyritecontaining ores in shake flasks with a recovery of 85.3 % compared with 24.3 % without AgE S, while slightly decreased the iron yields from 51% to 41.8%. The copper extraction of the chalcoopyrite-containing waste rock in column leaching charged with 18 kg mass increased up to 21.7% in the presence of AGES, while only 3.4% in the absence of the catalyst. The mechanism of Ag2S catalysis could be explained well by the "Mixed potential model".

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“…124 Bioleaching of complex sulfide concentrates at low temperature is catalyzed by different ions, such as silver, bismuth and tin. [133][134][135] The presence of different cations in the leach solution has a different catalytic activity on the dissolution of copper from concentrates: Ag (I)>>Hg(II)>Co(II)>Bi(III)>As(V)>Ru(III). The density of the pulp affects the efficiency of the bioleaching in the presence of silver.…”

Section: Influence Of Silver On the Catalytic Activity Of The Bacteriamentioning

confidence: 99%

The Catalytic Role of Acidithiobacillus ferrooxidans for Metals Extraction from Mining - Metallurgical Resource

Maluckov

2017

BIJ

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The use of catalytic ions in bioleaching

Cited by 47 publications

References 19 publications

Influence of heavy metals on growth and ferrous sulphate oxidation by Acidithiobacillus ferrooxidans in pure and mixed cultures

Influence of heavy metals on growth and ferrous sulphate oxidation by Acidithiobacillus ferrooxidans in pure and mixed cultures

Influences of silver sulfide on the bioleaching of chalcopyrite, pyrite and chalcopyrite-containing ore

The Catalytic Role of Acidithiobacillus ferrooxidans for Metals Extraction from Mining - Metallurgical Resource

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