Hexavalent chromate reduction by immobilized Streptomyces griseus

被引：0
|
作者：
Ashwini C. Poopal
R. Seeta Laxman
机构：
[1] National Chemical Laboratory,Division of Biochemical Sciences
来源：
Biotechnology Letters | 2008年 / 30卷
关键词：
Chromate reduction; Immobilized cells; Polyvinyl alcohol;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Hexavalent chromium, which is a mutagen and carcinogen, was efficiently reduced by Streptomycesgriseus. This activity was associated with the cell. Cr6+ reduction by free as well as immobilized cells was studied: cells in PVA-alginate had the highest (100%) Cr6+ removal efficiency in 24 h with reduction rates similar to free cells. Immobilized cells completely reduced 25 mg Cr6+ l−1 in 24 h. PVA-alginate immobilized cells could be reused four times to completely reduce 25 mg Cr6+ l−1 in 24 h each time. Chromate in a simulated effluent containing Cu2+, Mg2+, Mn2+ and Zn2+ was completely reduced by PVA-alginate immobilized cells within 9 h.
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收藏
页码：1005 / 1010
页数：5
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