01723nas a2200217   4500008004100000022001400041245008800055210006900143260007400212300001000286490000700296520091600303653001901219653002301238653002201261653003101283653002501314100002401339700002501363856011701388       2009                        eng d  a0141-549200aChromate reduction by PVA-alginate immobilized streptomyces griseus in a bioreactor0 aChromate reduction by PVAalginate immobilized streptomyces grise  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcJAN  a71-760 v313 a<p>Microbial reduction of toxic Cr(6+) to the less toxic Cr(3+) is potentially a useful bioremediation process. Among the matrices tested for whole cell immobilization of an efficient chromate-reducing Streptomyces griseus strain, PVA-alginate was the most effective and was used for reduction of Cr(VI) in a bioreactor. Cr(6+) reduction efficiency decreased as Cr(6+) was increased from 2 to 12 mg l(-1) but increased with an increase in biomass concentration. However, increasing the flow rate from 2 to 8 ml h(-1) did not significantly affect Cr(6+) reduction. The reduction was faster in simulated effluent than in synthetic medium and complete removal of 8 mg Cr(6+) l(-1) from effluent and synthetic medium occurred in 2 and 12 h, respectively. Our results indicate that immobilized S. griseus cells could be applied for the large-scale bioremediation of chromate-containing effluents and wastewaters.</p>10aBioremediation10aChromate reduction10aImmobilized cells10aPolyvinyl alcohol-alginate10aStreptomyces griseus1 aPoopal, Ashwini, C.1 aLaxman, Ryali, Seeta  uhttps://library.ncl.res.in/content/chromate-reduction-pva-alginate-immobilized-streptomyces-griseus-bioreactor-0