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The Rule of the Adsorption to Cd2+ by the Immobilized Bacteria

GUO Ping, GAO Hong-jie, WANG Jin, KANG Chun-li   

  1. College of Environment and Resources, Jilin University, Changchun 130023， China
  • Received:2006-10-20 Revised:1900-01-01 Online:2007-03-26 Published:2007-03-26
  • Contact: GUO Ping

Abstract: The rule of the adsorption to Cd2+ by the immobilized bacteria, which was screened from the activated sludge in the sewage treatment plant, was studied. The conclusion indicated that the Cd2+ adsorption onto the immobilized bacteria was a dynamic process, and achieved the equilibrium in 120 minutes. The adsorptive capacity went up as the concentration of Cd2+ increased, while fell down intensity increased. When the pH of the system was 6, the adsorptive capacity reached a peak. The effect of the ambient temperature was not remarkable to the adsorption. Pb2+, which was coexisted, reduced the adsorptive capacity of Cd2+.

Key words: immobilization, bacteria, adsorption, Cd2+

CLC Number: 

  • X132
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