摘要

As(V)- and Cr(VI)-resistant bacteria were isolated from the industrial city Kasur, Pakistan. The 16S rRNA gene sequencing revealed that the highly resistant bacteria KS2-1, KS2-2, MWM81, and KSKE41 were related to Bacillus sp., Rhodococcus sp., Cellulosimicrobium sp., and Exiguobacterium sp., respectively. KS2-1 reduced As(V) up to 94% and MWM81 reduced Cr(VI) up to 45%. Co-cultures of KS2-1 and KS2-2 reduced As(V) up to 98%, whereas co-cultures of MWM81 and KSKE41 reduced Cr(VI) up to 55%. Bacteria living in same niches could work together to degrade contaminants which were common toxicants for them.

  • 出版日期2013-7