Hexavalent chromate reduction by immobilized Streptomyces griseus |
| |
Authors: | Ashwini C Poopal R Seeta Laxman |
| |
Institution: | (1) Division of Biochemical Sciences, National Chemical Laboratory, Pune, 411008, India |
| |
Abstract: | 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. |
| |
Keywords: | Chromate reduction Immobilized cells Polyvinyl alcohol Streptomyces griseus |
本文献已被 PubMed SpringerLink 等数据库收录! |
|