Issue 37, 2018, Issue in Progress
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RSC Advances

Ag-exchanged NaY zeolite introduced polyvinyl alcohol/polyacrylic acid mixed matrix membrane for pervaporation separation of water/isopropanol mixture

YongSung Kwon,a   Shivshankar Chaudhari,a   ChaEun Kim,a   DaHae Son,a   JiHwan Park,a   MyungJun Moon,a   MinYoung Shon, ORCID logo *a   YouIn Parkb  and  SeungEun Namb  

* Corresponding authors

a Department of Industrial Chemistry, Pukyong National University, San 100, Yongdang-Dong, Nam-Gu, Busan, Korea
E-mail: myshon@pknu.ac.kr
Fax: +82 51 629 4629
Tel: +82 51 629 6440

b Center for Membranes, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon, Korea

Abstract

Ag-exchanged NaY zeolite (Ag-NaZ) particles were prepared by ion exchange and introduced to a polyvinyl alcohol (PVA) membrane cross-linked with polyacrylic acid (PAA) for the pervaporation dehydration of an isopropanol (IPA) aqueous mixture. The Ag-exchanged NaY zeolite particles were characterized by FE-SEM, EDS, BET, and XRD studies. The prepared Ag-NaZ-loaded PVA/PAA composite membrane was characterized by FE-SEM, XRD, a swelling study, and contact angle measurements. Pervaporation characteristics were investigated in terms of Ag-NaZ concentrations within PVA/PAA membranes using diverse feed solution conditions. The preferential sorption of IPA/water mixtures for Ag-NaZ-introduced membranes were also determined by calculating the apparent activation energies of IPA and water permeation, respectively. As a result, flux and selectivity increased with the Ag-NaZ concentration to 5 wt% in the membrane. Optimum pervaporation performance was observed in a 5 wt% Ag-NaZ-incorporated membrane with a flux equal to 0.084 kg m−2 h−1 and a separation factor of 2717.9 at 40 °C from an 80 wt% IPA aqueous feed solution.

Graphical abstract: Ag-exchanged NaY zeolite introduced polyvinyl alcohol/polyacrylic acid mixed matrix membrane for pervaporation separation of water/isopropanol mixture

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Article information

DOI
https://doi.org/10.1039/C8RA03474E
Article type
Paper
Submitted
23 Apr 2018
Accepted
31 May 2018
First published
06 Jun 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 20669-20678

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Ag-exchanged NaY zeolite introduced polyvinyl alcohol/polyacrylic acid mixed matrix membrane for pervaporation separation of water/isopropanol mixture

Y. Kwon, S. Chaudhari, C. Kim, D. Son, J. Park, M. Moon, M. Shon, Y. Park and S. Nam, RSC Adv., 2018, 8, 20669 DOI: 10.1039/C8RA03474E

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