Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2006, Vol. 27 ›› Issue (1): 99-102.DOI: -

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Adsorption of Cu2+ by Ca-bentonite in wastewater

Zhu, Yi-Min (1); Wang, Zhong-An (1); Su, Xiu-Juan (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:2006-01-15 Published:2013-06-23
  • Contact: Zhu, Y.-M.
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Abstract: The adsorption of copper ions by Ca-bentonite in wastewater was investigated experimentally. The results indicated that such a biosorbent has favorable adsorbing effect on copper ions, and the adsorption equilibrium comes about within 15 minutes. When the dose of Ca-bentonite is 10 g/L with the concentration of Cu up to 190.6 g/L the biosorbing rate is 94.0%, while the concentration of Cu2+ up to 635.4 g/L the biosorbing rate is 57.0%. The XRD analysis shows that the process of copper ions by Ca-bentonite indicates not only the surface and pore adsorption but also the crystal-interlamination adsorption by the bentonite.

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