Biological Effect of EPS on Metal Sulfides

Metal Mine ›› 2008, Vol. 38 ›› Issue (11): 38-42.

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Biological Effect of EPS on Metal Sulfides

Wang Li，Wen Jiankang，Liu Meilin

National Engineering Laboratory of Biohydrometallurgy, Beijing General Research Institute for Nonferrous Metals

Received:2008-09-30 Online:2008-11-15 Published:2011-07-12

Abstract

Abstract: Based on the study of the role of extracellular polymeric substances（EPS）in biohydrometallurgy carried out both in and outside China, the paper summarizes the composition, structure, biosynthesis and characters of EPS and their biological effect on metal sulfides. EPS dissolves metal sulfides mainly through the oxidation effect of Fe³⁺ forming complex with the groups such as uronic acid residue group in EPS.

Key words: Biohydrometallurgy, EPS, Metal sulfides, Redox

WANG Li, WEN Jian-Kang, LIU Mei-Lin. Biological Effect of EPS on Metal Sulfides[J]. Metal Mine, 2008, 38(11): 38-42.

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