کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
643679 | 884384 | 2008 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Pervaporation separation of toluene/alcohol mixtures using silicalite zeolite embedded chitosan mixed matrix membranes Pervaporation separation of toluene/alcohol mixtures using silicalite zeolite embedded chitosan mixed matrix membranes](/preview/png/643679.png)
Mixed matrix membranes (MMMs) of chitosan were prepared by incorporating silicalite zeolite particles in 5 and 10 wt.% with respect to weight of chitosan polymer to improve their pervaporation (PV) separation characteristics over that of pristine chitosan membrane for toluene/methanol and toluene/ethanol feeds in compositions of 10–40 wt.% of toluene at 30 °C. The membranes were crosslinked with glutaraldehyde (GA), which was confirmed by Fourier transform infrared spectroscopy (FTIR) and ion exchange capacity (IEC) measurements. X-ray diffraction (X-RD) and scanning electron microscopic (SEM) studies were performed to understand membrane morphology. Toluene permeated preferentially with a selectivity of 264 and fluxes of 0.019–0.027 kg/m2 h for toluene/methanol mixture. Selectivity of 301 with fluxes ranging from 0.019 to 0.026 kg/m2 h was observed for toluene/ethanol mixtures. Flux increased, while selectivity decreased with increasing toluene content of the feeds. An increase in silicalite content of the MMMs gave increased PV performances.
Journal: Separation and Purification Technology - Volume 62, Issue 1, 1 August 2008, Pages 128–136