超声作用对NaCl和MgSO4溶液在纳滤膜内传质的影响

doi:10.3969/j.issn.0438-1157.2014.z1.062

化工学报 ›› 2014, Vol. 65 ›› Issue (S1): 386-390.DOI: 10.3969/j.issn.0438-1157.2014.z1.062

超声作用对NaCl和MgSO₄溶液在纳滤膜内传质的影响

牟超, 胡国新

上海交通大学机械与动力工程学院, 上海 200240

收稿日期:2014-02-11 修回日期:2014-02-25 出版日期:2014-05-30 发布日期:2014-05-30
通讯作者: 胡国新
基金资助:
国家自然科学基金项目（51176113）。

Influence of ultrasonic treatment on NaCl aqueous solution and MgSO₄ aqueous solution in nanofiltration membrane transport

MU Chao, HU Guoxin

School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2014-02-11 Revised:2014-02-25 Online:2014-05-30 Published:2014-05-30
Supported by:
supported by the National Natural Science Foundation of China (51176113).

摘要/Abstract

摘要： 将超声波用于强化电解质溶液在纳滤膜内的传质过程，研究超声作用下NaCl和MgSO₄溶液在聚酰胺纳滤膜内的传质机理，考察超声作用对膜通量、截留率和跨膜电位随跨膜压差变化规律的影响。实验结果表明，与无超声作用相比，施加在膜表面的超声作用增大了膜通量，降低了截留率，提高了跨膜电位。

关键词: 超声波, 膜通量, 传质, 纳滤, 水溶液

Abstract: The potential use of ultrasonic treatment on the nanofiltration membrane for enhancing the electrolyte aqueous solution in the nanofiltration membrane transport was investigated. The mechanisms for mass transport of the electrolyte solution in the nanofiltration membrane with ultrasonic treatment were researched by an embedded ultrasound transducer and the cross-flow nanofiltration integrated experiments with NaCl and MgSO₄ in single-salt aqueous solution, the operating variables studied were feed concentra-tion (2-30 mol·m^-3) and applied pressure (0.1-0.26 MPa). It was observed that the observed rejections of NaCl and MgSO₄ with ultrasonic treatment were lower than those without ultrasonic treatment in constant feed concentration. However, the membrane flux and streaming potential with ultrasonic treatment were higher than those without ultrasonic treatment in constant feed concentration.

Key words: ultrasound, membrane flux, mass transfer, nanofiltration, aqueous solution

中图分类号:

TQ028.8

牟超, 胡国新. 超声作用对NaCl和MgSO₄溶液在纳滤膜内传质的影响[J]. 化工学报, 2014, 65(S1): 386-390.

MU Chao, HU Guoxin. Influence of ultrasonic treatment on NaCl aqueous solution and MgSO₄ aqueous solution in nanofiltration membrane transport[J]. CIESC Journal, 2014, 65(S1): 386-390.

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超声作用对NaCl和MgSO₄溶液在纳滤膜内传质的影响

Influence of ultrasonic treatment on NaCl aqueous solution and MgSO₄ aqueous solution in nanofiltration membrane transport

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