CIESC Journal ›› 2011, Vol. 19 ›› Issue (1): 173-176.

• • 上一篇    

Preparation of High Concentration Polyaluminum Chloride with High Alc Content by Membrane Distillation

赵长伟, 王军, 栾兆坤   

  1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
  • 收稿日期:2010-05-13 修回日期:2010-09-18 出版日期:2011-02-28 发布日期:2011-02-28
  • 通讯作者: ZHAO Changwei, E-mail: zhaocw@rcees.ac.cn
  • 基金资助:
    Supported by National Natural Science Foundation of China(50708109,21076219);the National High Technology Research and Development Key Program of China(2007AA06Z339,2009AA062901)

Preparation of High Concentration Polyaluminum Chloride with High Alc Content by Membrane Distillation

ZHAO Changwei, WANG Jun, LUAN Zhaokun   

  1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
  • Received:2010-05-13 Revised:2010-09-18 Online:2011-02-28 Published:2011-02-28
  • Supported by:
    Supported by National Natural Science Foundation of China(50708109,21076219);the National High Technology Research and Development Key Program of China(2007AA06Z339,2009AA062901)

摘要: A direct contact membrane distillation(DCMD)process was applied to prepare high concentration polyaluminum chloride(PACl)with high Alc content.The changes in total Al concentration(AlT)and Al species distribution were investigated.The results showed that AlT increased but the flux decreased with operating time during the DCMD process.The Alc content increased from 65%to 81% while the Alb content decreased from 34% to 18%,and the Ala content was almost 1%in the process.2.1 mol·L-1 PACl with 81%Alc was successfully prepared by DCMD method.Thus the DCMD is an effective method for preparing high concentration PACl with high Alc content.

关键词: polyaluminum chloride, high concentration, membrane distillation, preparation

Abstract: A direct contact membrane distillation(DCMD)process was applied to prepare high concentration polyaluminum chloride(PACl)with high Alc content.The changes in total Al concentration(AlT)and Al species distribution were investigated.The results showed that AlT increased but the flux decreased with operating time during the DCMD process.The Alc content increased from 65%to 81% while the Alb content decreased from 34% to 18%,and the Ala content was almost 1%in the process.2.1 mol·L-1 PACl with 81%Alc was successfully prepared by DCMD method.Thus the DCMD is an effective method for preparing high concentration PACl with high Alc content.

Key words: polyaluminum chloride, high concentration, membrane distillation, preparation