CO2 supply in the biooxidation of an enargite-pyrite gold concentrate

被引：31

作者：

Acevedo, F ^{[1
]}

Gentina, JC ^{[1
]}

García, N ^{[1
]}

机构：

[1] Pontificia Univ Catolica Valparaiso, Sch Biochem Engn, Valparaiso, Chile

来源：

BIOTECHNOLOGY LETTERS | 1998年 / 20卷 / 03期

关键词：

D O I：

10.1023/A:1005377919131

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

CO2 supply at 4% (v/v) in air increased the biooxidation of a gold concentrate (41% enargite, 43% pyrite) with Thiobacillus ferrooxidans in a 2-l bioreactor at 4% (w/v) solids concentration, 35 degrees C and pH 2.4. Extraction increased from 21 to 69% for Fe, 19 to 25% for As, and 16 to 19% for Cu. Suspended biomass increased from 2.6.10(7) to 1.2.10(8) cells/ml. It is concluded that the biooxidation of this gold concentrate is limited by the rate of CO2 supply.

引用

页码：257 / 259

页数：3