A new integrated approach for dye removal from wastewater by polyoxometalates functionalized membranes

JOURNAL OF HAZARDOUS MATERIALS

卷:301

Article

Yao, Lei^1,2  Zhang, Lizhi²  Wang, Rong²  Chou, Shuren²  Dong, Zhili¹ 

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Nanyang Environm & Water Res Inst, Singapore Membrane Technol Ctr, Singapore 637141, Singapore

关键词: Polyoxometalates;    Membrane;    Adsorption;    Catalytic degradation;    Dye removal;   

DOI  :  10.1016/j.jhazmat.2015.09.027

来源: Elsevier

【 摘 要 】

Membrane technique is a promising way for the removal of dyes from wastewater. A unique approach combining both the adsorptive and the catalytic membrane processes was proposed on the basis of a new functionalized membrane. The membrane integrating both the adsorptive and catalytic activities was developed by introducing polyoxometalates (POMs) as an ideal candidate for the membrane functionalization via a novel sal-gel method. A two-step protocol, adsorptive separation and catalytic degradation, was designed for dye removal, realizing an excellent dye rejection with easy and economic membrane regeneration through simply soaking the membrane in a limited volume of dilute oxidant solution. This approach is feasible and versatile owing to the flexible selection of distinct POMs and design of catalytic degradation routes as required. As a result, the current research provides insight into a new methodology of the membrane technique in dye removal applications. (C) 2015 Elsevier B.V. All rights reserved.

【 授权许可】

Free