Immobilization of copper ions on chitosan/cellulose acetate blend hollow fiber membrane for protein adsorption

被引：25
|
作者：
Shen, S. S. [1 ,2 ,3 ]
Yang, J. J. [1 ,2 ,3 ]
Liu, C. X. [4 ]
Bai, R. B. [1 ,2 ,3 ]
机构：
[1] Suzhou Univ Sci & Technol, Ctr Separat & Purificat Mat Technol, Suzhou 215009, Peoples R China
[2] Suzhou Key Lab Separat & Purificat Mat Technol, Suzhou 215009, Peoples R China
[3] Jiangsu Collaborat Innovat Ctr Technol & Mat Wate, Suzhou 215009, Peoples R China
[4] Isola Grp, Singapore 629586, Singapore
来源：
RSC ADVANCES | 2017年 / 7卷 / 17期
基金：
中国国家自然科学基金;
关键词：
METAL AFFINITY MEMBRANE; ANTIBACTERIAL PROPERTIES; CHITOSAN; CELLULOSE; PURIFICATION; MECHANISMS; SEPARATION; KINETICS; FILMS; ACID;
D O I：
10.1039/c7ra00148g
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An affinity membrane was prepared by immobilizing copper ions (Cu2+) on chitosan (CS) and cellulose acetate (CA) blend hollow fibers, and the affinity membrane (denoted as CS/CA-Cu) was evaluated for its performance in the adsorption of a model protein, Bovine Serum Albumin (BSA). The analysis indicated that the amount of copper ions coupled on CS/CA-Cu reached around 3.9 mg per g-membrane. The experimental results showed that CS/CA-Cu achieved a high adsorption capacity of the 69 mg-BSA per g-membrane, under the typical solution condition of pH at 7.4 and ionic strength at 0.12 M, with the nonspecific adsorption being as low as less than 15%. The adsorption isotherm followed the Langmuir model and the adsorption kinetics exhibited both transport-limited and attachment-limited behaviors. CS/CA-Cu also performed favorably in the neutral pH range and at low ionic strength.
引用
收藏
页码：10424 / 10431
页数：8
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