CHALCOCITE OXIDATION BY CONCENTRATED CELL SUSPENSIONS OF THIOBACILLUS FERROOXIDANS

Beck, Jay V.

dc.contributor.author	Beck, Jay V.
dc.date.accessioned	2020-06-29T13:55:41Z
dc.date.available	2020-06-29T13:55:41Z
dc.date.issued	1977
dc.date.submitted	2020-06
dc.identifier.uri	http://hdl.handle.net/10033/622320
dc.description.abstract	Suspensions of intact cells of Thiobacillus ferrooxidans catalyze a rapid oxidation of finely ground chalcocite to covellite and soluble copper as shown in the following equation: 2Cu2S + 0» + 2HyS0, ————> 2CuS + 2CuS0, + 2Hy0 This reaction occurs spontaneously, but bacterial action increases the oxidation rate about 40 times. The oxidation reaction consumes protons thus causing an increased pH. Both spontaneous and biologically catalyzed oxidations cease when the pH reaches 4.6 - 4.7. In the presence of bacteria and under experimental conditions as described, a period of only about five hours is required to completely convert 0.3 gm of chalcocite to covellite with a 50% solubilization of the chalcocite copper.	en_US
dc.language.iso	en_US	en_US
dc.rights	Attribution-NonCommercial-ShareAlike 4.0 International	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-sa/4.0/	*
dc.title	CHALCOCITE OXIDATION BY CONCENTRATED CELL SUSPENSIONS OF THIOBACILLUS FERROOXIDANS	en_US
dc.type	Book chapter	en_US
dc.type	conference paper	en_US
dc.contributor.department	Department of Microbiology, Brigham Young University Provo, Utah, USA	en_US
dc.identifier.journal	Conference Bacterial Leaching 1977, 119-128	en_US
refterms.dateFOA	2020-06-29T13:55:42Z