二氧化碳浓度对黄铁矿-毒砂精矿生物浸出的影响。

Effect of carbon dioxide concentration on the bioleaching of a pyrite-arsenopyrite ore concentrate.

作者信息

Nagpal S, Dahlstrom D, Oolman T

机构信息

Department of Chemical Engineering, 3290 Merrill Engineering Building, University of Utah, Salt Lake City, Utah 84112, USA.

出版信息

Biotechnol Bioeng. 1993 Feb 20;41(4):459-64. doi: 10.1002/bit.260410409.

DOI:10.1002/bit.260410409

PMID:18609574

Abstract

The effect of carbon dioxide concentration on the bacterial leaching of a pyrite-arsenopyrite ore concentrate was studied in continuous-flow reactors. Steady-state operation with two feed slurry densities, 6 wt% and 16 wt% solids, were tested for the effect of carbon dioxide concentration. Bacterial growth rates were estimated via the measurement of carbon dioxide consumption rates. Aqueous-phase carbon dioxide concentrations in excess of 10 mg/L were found to be inhibitory to bacterial growth.

摘要

在连续流反应器中研究了二氧化碳浓度对黄铁矿-毒砂精矿细菌浸出的影响。针对两种进料矿浆密度（6重量%和16重量%固体）的稳态操作，测试了二氧化碳浓度的影响。通过测量二氧化碳消耗速率来估算细菌生长速率。发现水相二氧化碳浓度超过10毫克/升会抑制细菌生长。