期刊
DESALINATION AND WATER TREATMENT
卷 51, 期 28-30, 页码 5485-5493出版社
DESALINATION PUBL
DOI: 10.1080/19443994.2012.760490
关键词
Pervaporation; Composite membranes; PVA; PVP; Dimethyl carbonate; methanol azeotrope
Pervaporation (PV) separation of dimethyl carbonate/methanol azeotrope was investigated using composite membranes consisting of Poly(vinyl alcohol) (PVA)/poly(vinyl pyrrolidone) (PVP) blend membrane as active layer and a polyacrylonitrile ultrafiltration membrane as substrate. The active layer was physically blended and cross-linked with glutaraldehyde (GA). The chemical and physical properties of the blend membranes with different proportions of PVA/PVP were characterized by Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), X-ray diffraction, thermogravimetric analysis, and contact angle measurement. The PV properties of the membranes were investigated by the separation of azeotrope. The effects of PVP, GA content, and operating temperature on PV performances were investigated. Permeation flux increased with increasing PVP content and feed temperature, while separation factor decreased. However, the separation factor increased with increasing GA content, whereas the flux decreased. The results showed that the membrane containing 70wt% PVP and 0.5wt% GA exhibited excellent PV properties with a flux of 955.77gm(-2)h(-1) and separation factor of 68.00 at 50 degrees C.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据