Instability Mechanisms of Supported Liquid Membrane for Phenol Transport

Abstract

Abstract: The instability mechanisms of the supported liquid membrane using Celgard 2500 membranes as support and tributyl phosphate dissolved in kerosene as carrier for phenol transport was studied by electrochemical impedance spectroscopy.Emulsion formation is demonstrated to be one of the main causes for the instability of supported liquid membrane in the present system.The emulsion-facilitated conditions,such as higher membrane liquid concentration,faster stirring speed,lower salt concentration and higher HLB value,would accelerate the degradation of supported liquid membrane.Other mechanisms including solubility and osmotic pressure work together to increase the membrane liquid loss.

Key words: supported liquid membrane, phenol, instability mechanisms, emulsion formation

摘要： The instability mechanisms of the supported liquid membrane using Celgard 2500 membranes as support and tributyl phosphate dissolved in kerosene as carrier for phenol transport was studied by electrochemical impedance spectroscopy.Emulsion formation is demonstrated to be one of the main causes for the instability of supported liquid membrane in the present system.The emulsion-facilitated conditions,such as higher membrane liquid concentration,faster stirring speed,lower salt concentration and higher HLB value,would accelerate the degradation of supported liquid membrane.Other mechanisms including solubility and osmotic pressure work together to increase the membrane liquid loss.

关键词: supported liquid membrane, phenol, instability mechanisms, emulsion formation

ZHENG Huidong, WANG Biyu, WU Yanxiang, REN Qilong. Instability Mechanisms of Supported Liquid Membrane for Phenol Transport[J]. , 2009, 17(5): 750-755.

郑辉东, 王碧玉, 吴燕翔, 任其龙. Instability Mechanisms of Supported Liquid Membrane for Phenol Transport[J]. , 2009, 17(5): 750-755.

References

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