Effective Charge Density and Pore Structure of Charged Ultrafiltration Membranes

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Shin-ichi Nakao¹  Shoji Kimura¹  Toshinori Tsuru¹ 

[1] Department of Chemical Engineering, The University of Tokyo

关键词: Membrane Separation;    Filtration;    Charged Membrane;    Ultrafiltration;    Charge Density;    Membrane Potential;    Tortuosity;   

DOI  :  10.1252/jcej.23.604

来源: Maruzen Company Ltd

【 摘 要 】

References(20)Cited-By(33)In the transport equation of charged ulfrafiltralion and reverse osmosis membranes which we proposed previously, the effective charge density and the membrane structure, that is, membrane thickness, tortuosity and the water content, are important transport parameters.In this study, these two parameters as determined from ultrafiltration experiments by using the previously proposed transport equation were compared with those obtained from other experiments. The effective charge density was determined from measurement of the membrane potential. It was strongly affected by the feed concentration and agreed well with that obtained from the filtration experiments. Moreover, the membrane structural parameter determined from filtration experiments was compared with that obtained from diffusion experiments. The two values showed good agreement.The measurement of membrane potential and the diffusion experiments were found to be useful for predicting the transport parameters of charged ultrafiltration membranes.

【 授权许可】

Unknown