Bioregeneration of Leaching Solutions during Two-Step Processing of Copper-Zinc Concentrate

被引：4
|
作者：
Fomchenko, N. V. [1 ]
Muravyov, M. I. [1 ]
Melamud, V. S. [1 ]
机构：
[1] Russian Acad Sci, Winogradsky Inst Microbiol, Biotechnol Res Ctr, Moscow 119071, Russia
来源：
APPLIED BIOCHEMISTRY AND MICROBIOLOGY | 2018年 / 54卷 / 04期
关键词：
bioregeneration; leaching; acidophilic microorganisms; biohydrometallurgy; nonferrous metals; BIOHYDROMETALLURGICAL TECHNOLOGY; OXIDATION; BIOOXIDATION; BACTERIAL; RECOVERY;
D O I：
10.1134/S0003683818040075
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：
A comparative study of the oxidation of ferrous iron ions by various cultures of acidophilic chemolithotrophic microorganisms in solutions obtained after ferric leaching of copper-zinc concentrate at 80A degrees C has been carried out. It was shown that the use of a moderately thermophilic culture for bioregeneration of leaching solutions was preferable. At the same time, the oxidation rate of Fe2+ ions reached 0.88 g/(L h), or 21.1 g/(L day). We propose that the activity of the moderately thermophilic culture was due to the presence of the mixotrophic bacteria Sulfobacillus spp., which used organic products of the microbial lysis for their growth. These products were formed during high-temperature ferric leaching of the copper-zinc concentrate with the biosolution.
引用
收藏
页码：432 / 435
页数：4
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