Removal Mechanism of Heavy Metal by Desulfovibrio desulfurican
A pure sulfate reducing bacteria of Desulfovibrio desulfurican was used to treat the wastewatcr with different dosages of Cd2+.Accumulated H2S in the systems varied between 0.28 and 0.35ml when the Cd2+ was less than 28mg/L.The removal efficiency of Cd2+ and SO42 in all reactors reached 99%.At same time the role of extracellular polymeric substances (EPS) in the removal of Cd2+ was studied.The content of EPS increased with the increasing of Cd2+ from 0 to 11.2mg/L,and decreased with a further increase to 28mg/L.A lowest EPS production was obtained when the concentration of Cd2+ was 28mg/L.Cd2+ in the EPS solution increased with the increase of initial Cd2+.A maximum value of 11% of the removal of Cd2+ could be attributed to the EPS.
Desulfovibrio desulfurican extracellular polymeric substances (EPS) heavy metal sulfate reducing bacteria (SRB)
LI Mingming JIN Jie
School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009 Department of Biological & Environmental Engineering, Hefei University, Hefei 230026, China
国际会议
合肥
英文
706-709
2012-05-24（万方平台首次上网日期，不代表论文的发表时间）