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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2017.27.6.487

Pervaporation of binary Water/Methanol and Water/Butanol Mixtures through Zeolite 4A Membranes: Experiments and Modeling  

Oh, Woong-Jin (Korea Institute of Energy Research)
Jung, Jae-Chil (FINETECH. Co., Ltd.)
Yeo, Jeong-gu (Korea Institute of Energy Research)
Lee, Jung Hyun (Korea Institute of Energy Research)
Kim, Hyunuk (Korea Institute of Energy Research)
Park, Young Cheol (Korea Institute of Energy Research)
Lee, Dong-Ho (Korea Institute of Energy Research)
Moon, Jong-Ho (Korea Institute of Energy Research)
Cho, Churl-Hee (Graduate School of Energy Science and Technology, Chungnam National University)
Publication Information
Membrane Journal / v.27, no.6, 2017 , pp. 487-498 More about this Journal
Abstract
In this study, pervaporation performances of water/methanol and water/butanol mixture were evaluated using zeolite 4A membranes manufacutred by FINETECH by experimental works and numerical modeling. Permeation and separation characteristics, such as flux and separation factor, were analyzed by gas chromatography (TCD) and liquid nitrogen traps. Experiments have shown that water is selectively separated from a mixture of water and methanol (separation factor up to approximately 250) and water and butanol (separation factor up to approximately 1,500). Generalized Maxwell Stefan (GMS) theory was implemented to predict pervaporation behaviors of water/alcohol mixtures and diffusional coefficients of zeolite layer were obtained through parameter estimation using $MATLAB^{(R)}$ optimization toolbox. Since the pore size of zeolite 4A are much larger than kinetic diameter of water molecules and smaller than those of methanol and butanol, zeolite 4A membranes can be applied to in situ water removal process such as membrane reactors or hybrid reaction-dehydration process.
Keywords
pervaporation; zeolite membrane; CCU (carbon capture & utilization); methanol synthesis; Water/MeOH mixture; Water/BuOH mixture;
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