渣中6价铬的微生物解毒研究

doi:10.3969/j.issn.1007-2985.2013.02.016

journal6 ›› 2013, Vol. 34 ›› Issue (2): 72-76.DOI: 10.3969/j.issn.1007-2985.2013.02.016

渣中6价铬的微生物解毒研究

(中南大学冶金科学与工程学院,湖南长沙 410083)

出版日期:2013-03-25 发布日期:2013-04-23

Microbial Detoxification of Hexavalent Chromium from Chromium-Containing Slag

（School of Metallurgical Science and Engineering,Central South University,Changsha 410083，China）

Online:2013-03-25 Published:2013-04-23
About author:HE De-wen(1968-),male,was born in Yongzhou City,Hunan Province,professor of Central South University,majoring in environmental material research
Supported by:
Supported by the National Advanced Technology Research and Development Project (863 Project 2010AA6492080)

摘要/Abstract

摘要：详细研究了微生物处理铬渣中6价铬Cr(Ⅵ)及其回收Cr(Ⅲ)的方法.研究成果表明，来自铬渣场的一株名为Ch-1的细菌能有效地加速Cr(Ⅵ)浸出和去除；此外，通过扫描电子扫描电镜(SEM)和X射线仪器(EDX)观察，Ch-1细菌能有效改变浸出后铬渣的结构,这有利于铬渣中Cr(Ⅵ)浸出及其解毒为毒性低的Cr(Ⅲ)；最后经浸出毒性试验，淋溶渣的毒性为3.3 μg/g，远低于国家标准5 μg/g，且6价铬Cr(Ⅵ)的回收率高达90%以上.

关键词： 铬渣, 微生物, 解毒, 回收

Abstract: In this paper,treatment and recovery of hexavalent chromium(Cr(Ⅵ)) from chromium-containing slag by bacteria was studied.The work showed that a bacterial strains of Ch-1 isolated from chromium-containing slag can efficiently accelerate Cr(Ⅵ) leaching and remove it.Moreover,bacteria Ch-1 can effectively change the structure of chromium-containing slag by Scanning Electron Microscopy(SEM) and the Energy Dispersive X-Ray (EDX),which is benefitial to Cr(Ⅵ) leaching and its detoxification by changing Cr(Ⅵ) to Cr(Ⅲ).The effect of detoxification by bacteria of Ch-1 is obvious,the toxicity in leached slag was 3.3 μg/g lower than the national standard of 5 μg/g,and the recovery rates of hexavalent chromium are more than 90%.

Key words: Chromium-containing Slag, bacteria, treatment, recovery

何德文, 刘欢, 蒋崇文, 段浩鹏, 刘蕾. 渣中6价铬的微生物解毒研究[J]. journal6, 2013, 34(2): 72-76.

HE De-Wen, LIU Huan, JIANG Chong-Wen, DUAN Hao-Peng, LIU Lei. Microbial Detoxification of Hexavalent Chromium from Chromium-Containing Slag[J]. journal6, 2013, 34(2): 72-76.

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渣中6价铬的微生物解毒研究

Microbial Detoxification of Hexavalent Chromium from Chromium-Containing Slag

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