改性羧甲基纤维素膜的制备及其在氨氮废水处理中的应用  

Preparation of CMC-Fe Membrane and Study on Application in Electrodialysis for Treating Wastewater

作　　者：林佩凤[1] 陈日耀[1] 郑曦[1] 耿亚敏[1] 陈震[1] 

机构地区：[1]福建师范大学化学与材料学院,福建福州350007

出　　处：《福建师范大学学报（自然科学版）》2006年第4期63-66,共4页Journal of Fujian Normal University：Natural Science Edition

基　　金：福建省自然科学基金资助项目(A9910009);福建省教育厅资助项目(JB05314JA02189)

摘　　要：以F eC l3改性羧甲基纤维素(CM C),使得水溶性CM C膜改性为疏水性阳离子交换膜CM C-F e,该膜能稳定存在于酸碱溶液中.用扫描电镜观察其表面形态,IR分析表明改性羧甲基纤维素中的-COOH吸收峰发生了位移.将其应用于电渗析去除高浓度氨氮废水的处理中,结果表明,该膜对氨氮的选择透过性较好,能有效地去除水中氨氮,去除率可达90%.NH4+的迁移过程符合一级反应动力学.An insoluble CMC-Fe membrane was prepared by being linked soluble carboxymethylcellulose with FeCl3. The membrane as a cationic exchanging membrane in electrodialysis was applied in treating wastewater with high concentration of inorganic ammonia and azote. The results of experiment showed that it was well-selective to ammonia and azote. The percentage of the removal of ammonia and azote in wastewater is up to 90%. The migration process of NH4^＋ is following one class reaction kinetics.

关 键 词：改性羧甲基纤维素 离子交换膜 电渗析 氨氮 

分 类 号：TQ287[化学工程—有机化工] X703[环境科学与工程—环境工程]