Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4763650 | Chemical Engineering Journal | 2017 | 34 Pages |
Abstract
The exploration of novel O/W filters having not only high permeation and rejection but also durable performance is a key driver of membrane material research. In this study, a glass fiber membrane (GF) was grafted with hyperbranched polyethyleneimine (HPEI) via a two-step process and used for O/W separation. The silanol group in the GF was reacted with epichlorohydrin followed by the reaction with the amine groups in the HPEI molecules. The obtained GF-g-HPEI membranes were characterized by FTIR, XPS, SEM and WCA measurements. The O/W separation performance was evaluated by dead-end filtration of a series of oil dispersion and emulsions. ATR-FTIR and XPS measurements indicated that HPEI was grafted on GF membrane surface successfully. The engineered GF membranes exhibit superwetting properties, outstanding permeability (1000 L/m2h at 10 cm gravity pressure) and quantitative oil rejection (â§99.6%) for emulsified and dispersed oil. In addition, the modified membrane showed excellent thermal and chemical stability, compared with polymer-based membranes. All the above characteristics render the modified GF membrane cheap, effective and durable filters for O/W emulsion separation.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Zhanping Cao, Tingyu Hao, Pan Wang, Yufeng Zhang, Bowen Cheng, Tao Yuan, Jianqiang Meng,