Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Sorption Behavior and Mechanism of Phosphate onto Natural Magnesite

  • Xie, Fazhi (School of Materials Science and Chemical Engineering, Anhui Jianzhu University) ;
  • Hu, Tingting (School of Materials Science and Chemical Engineering, Anhui Jianzhu University) ;
  • Oh, Won-Chun (Department of Advanced Materials & Science Engineering, Hanseo University) ;
  • Sheng, Dandan (School of Materials Science and Chemical Engineering, Anhui Jianzhu University) ;
  • Li, Haibin (School of Materials Science and Chemical Engineering, Anhui Jianzhu University) ;
  • Wang, Xuechun (School of Materials Science and Chemical Engineering, Anhui Jianzhu University) ;
  • Xie, Zhiyong (School of Materials Science and Chemical Engineering, Anhui Jianzhu University) ;
  • Li, Guolian (School of Environment and Energy Engineering, Anhui Jianzhu University) ;
  • Han, Xuan (School of Materials Science and Chemical Engineering, Anhui Jianzhu University) ;
  • Xie, Wenjie (School of Materials Science and Chemical Engineering, Anhui Jianzhu University) ;
  • Sun, Mei (School of Materials Science and Chemical Engineering, Anhui Jianzhu University)
  • Received : 2015.10.10
  • Accepted : 2017.03.03
  • Published : 2017.03.27
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Abstract

Removal of phosphate from environmental water has become more important to prevent eutrophication. In the present study, sorption behavior of phosphate onto magnesite was investigated under different conditions. The optimum pH of phosphate adsorption was determined to be 6.0. The adsorption capacity was found to decrease with increasing temperature, which indicates that a low temperature was beneficial for phosphate adsorption. The sorption capacity for phosphate was found to be 10.2 mg/g at an initial concentration of 100 mg/L and a dose of 2 g/L. The first order kinetic equation and Freundlich isotherm model fit the data well. Phosphate adsorption on magnesite was explained by electrostatic attraction and weak physical interactions.

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