%0 Journal Article %J Biotechnology Letters %D 2008 %T Hexavalent chromate reduction by immobilized streptomyces griseus %A Poopal, Ashwini C. %A Laxman, Ryali Seeta %K Chromate reduction %K Immobilized cells %K polyvinyl alcohol %K Streptomyces griseus %X

Hexavalent chromium, which is a mutagen and carcinogen, was efficiently reduced by Streptomyces griseus. 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.

%B Biotechnology Letters %I SPRINGER %C VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS %V 30 %P 1005-1010 %8 JUN %G eng %N 6 %9 Article %3

Foreign

%4

1.639

%R 10.1007/s10529-008-9662-0