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

Abstract

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

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

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

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

ZHAO Changwei, WANG Jun, LUAN Zhaokun. Preparation of High Concentration Polyaluminum Chloride with High Al_c Content by Membrane Distillation[J]. , 2011, 19(1): 173-176.

赵长伟, 王军, 栾兆坤. Preparation of High Concentration Polyaluminum Chloride with High Al_c Content by Membrane Distillation[J]. CIESC Journal, 2011, 19(1): 173-176.

References

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