Pretreatment of e-waste and mutation of alkali-tolerant cyanogenic bacteria promote gold biorecovery.

Volume: 152, Pages: 80 - 85
Published: Jan 1, 2014
Abstract
Gold was recovered from electronic scrap material (ESM) as gold-cyanide complex by Chromobacterium violaceum which produces cyanide as a secondary metabolite. The effect of pretreatment and mutation of alkali-tolerant bacteria was examined. Pretreatment dissolved most of the base metals, thereby reducing competition for the cyanide ion from other metals. As the pKa of HCN is 9.3, alkaline pH increases the cyanide ion concentration available for...
Paper Details
Title
Pretreatment of e-waste and mutation of alkali-tolerant cyanogenic bacteria promote gold biorecovery.
Published Date
Jan 1, 2014
Volume
152
Pages
80 - 85
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