Effect of Fe(III) on the biotreatment of bioleaching solutions using sulfate-reducing bacteria

被引：19

作者：

Cao, Junya ^{[1
,2
]}

Li, Yuanyuan ^{[2
]}

Zhang, Guangji ^{[2
]}

Yang, Chao ^{[2
]}

Cao, Xiaoya ^{[1
,2
]}

机构：

[1] China Univ Min & Technol, Sch Chem & Environm Engn, Beijing 100083, Peoples R China

[2] Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Key Lab Biochem Engn, Beijing 100190, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MINERAL PROCESSING | 2013年 / 125卷

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

Sulfate reducing bacteria; Fe(III); Precipitation; Bioleaching solution; ACID-MINE DRAINAGE; HEAVY-METALS; BED REACTOR; BIOREMEDIATION; REDUCTION; REMOVAL; SULFIDE; SYSTEM; GROWTH; COPPER;

D O I：

10.1016/j.minpro.2013.09.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The selective precipitation of metals using H2S produced biologically by sulfate-reducing bacteria (SRB) was put forward to dispose bioleaching solutions. Fe(III) is a common ion in the bioleaching solutions, and Fe(III) could inhibit the growth of SRB. The purpose of this paper is to investigate the influence of Fe( III) on the growth/activity of a mixed culture of SRB. Batch tests were carried out in flasks with Fe(III) concentrations at 02, 1, 5 and 10 g/L respectively. To avoid the impact of precipitation, addition of sodium citrate to the medium was also studied. Sulfate removal rates were greater than those in samples without iron, except in the system with a high iron concentration of 10 g/L. It is found that the mixed culture of SRB can tolerate high concentrations of Fe(III) up to 10 g/L After adding sodium citrate, SRB can tolerate higher concentrations of Fe(III), and the sulfate removal rate was the highest in the system with 5 g/L Fe(III). Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.

引用

页码：27 / 33

页数：7