Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2006, Vol. 27 ›› Issue (8): 922-925.DOI: -

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Mechanism of Pb(II)/Cr(VI) biosorption by saccharomyces cerevisiae

Su, Xiu-Juan (1); Zhu, Yi-Min (1); Zhao, Chen (1); Wei, De-Zhou (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-08-15 Published:2013-06-23
  • Contact: Su, X.-J.
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Abstract: Discusses the mechanism of Pb(II)/Cr(VI) biosorption by Saccharomyces cerevisiae through the zeta potentials and configuration of metal ions with different pH values. Experimental results showed that the isoelectric point of Saccharomyces cerevisiae is 3.7 approximately and that the zeta potentials of Saccharomyces cerevisiae decreases gradually with increasing pH value. The electrostatic biosorption is dominant in adsorbing Pb(II) when pH value is less than 4.0 and adsorbing Cr(VI) when pH value is 2.0-6.0, but isn't dominant when pH value are different from those as above.

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