逆坡运输与膜污染对反电渗析效能的影响  

Effect of uphill transport and membrane fouling on reverse electrodialysis efficiency

作　　者：李贤能 刘贵彩 刘宇昊 孙国政 赵东升 任潇 杜加磊 Li Xianneng;Liu Guicai;Liu Yuhao;Sun Guozheng;Zhao Dongsheng;Ren Xiao;Du Jialei(School of Civil Engineering and Architecture,University of Jinan,Jinan 250022,China;School of Civil Engineering,Nanyang Normal University,Nanyang 473061,China)

机构地区：[1]济南大学土木建筑学院,山东济南250022 [2]南阳师范学院土木建筑工程学院,河南南阳473061

出　　处：《可再生能源》2025年第4期561-568,共8页Renewable Energy Resources

基　　金：国家自然科学基金项目(5180825,51979064)。

摘　　要：文章从逆坡运输和膜污染两个方面对多价离子以及有机物对反电渗析(RED)装置产电效能的影响进行了研究。结果表明:当进料液为0.5mol/L的纯NaCl溶液时,RED装置的功率密度最大;当进料液由0.5 mol/L的纯NaCl溶液变为0.5mol/L的纯多价盐(MgCl_(2),CaCl_(2),Na_(2)SO_(4))溶液时,RED装置的功率密度分别下降72.45%,68.82%,72.14%;当多价盐-有机污染物海藻酸钠(SA)共存时,随着SA含量的增加,RED装置的功率密度先升高后逐渐降低,并在SA含量为30mg/L时有最大值;纯NaCl溶液对SA吸附于阴离子交换膜的影响最小,NaCl溶液与MgCl_(2)的混合溶液对SA吸附于阴离子交换膜的影响最大。The impacts of multivalent ions and organic substances on the energy generation efficiency of Reverse Electrodialysis(RED)devices were investigated in terms of uphill transport and membrane fouling.The results showed that the maximum power density was obtained when the 0.5 mol/L NaCl solutions was used as the feeding solution of the RED device.However,the power densities decreased by 72.45%,68.82%,and 72.14%,respectively,as the feeding solutions were switched to 0.5 mol/L multivalent salt(MgCl_(2),CaCl_(2) and Na_(2)SO_(4))solutions.By adding organic foulants-sodium alginate(SA)into the multivalent salt solutions,the power density was enhanced with the increase of SA concentrations and reached a maximum level with addition of 30 mg/L SA,and then was gradually decreased when SA concentration was further raised.The NaCl solutions exerted minor influences on the adsorption of SA molecules onto cation-exchange membranes.In contrast,the mixture of NaCl and MgCl_(2) obviously exacerbated the adhesion between SA molecules and cation-exchange membranes.

关 键 词：反电渗析 逆坡运输 膜污染 界面自由能 

分 类 号：TK71[动力工程及工程热物理—流体机械及工程]