Preparation of Nano-silica Dioxide Modified Cellulose Acetate (CA) Membranes for Enhanced Performance in Forward Osmosis Process

Haiyang Jin, Li Lin, Min Liu, Qingyun Li, Zhuo Huang, Xianqiang Tang, Ping Yu

2018

Abstract

Nano-silica dioxide (nano-SiO2) modified cellulose acetate (CA) membranes for forward osmosis (FO) were prepared by phase inversion via immersion precipitation technique. Nano-SiO2 particles were added into the casting solution of CA, 1, 4-dioxane, acetone, lactic acid and methanol to improve the FO membranes performance. Different percentage of nano-SiO2 (2, 4 and 6 wt. %) of CA composite membranes were cast. The modified membranes were characterized by various methods to probe the membranes structure and surface properties. The FO performances were also evaluated for the modified membranes compared to the non nano-SiO­2 membranes. The surface hydrophilicity, porosity and tensile strength of nano-SiO2 CA membranes were improved with the increment of the percentage of nano-SiO2 added to the CA. The morphological studies showed that the addition of nano-SiO2 significantly changed the surface properties of the CA membranes. The FO performance was evaluated using 1M NaCl solution as feed solution and purified water as draw solution. The nano-SiO2 CA membranes showed better water flux and reverse salt flux in the range of 2–6 wt. % nano-SiO2 content than original CA membranes. These encouraging results suggested that nano-SiO2 CA membranes displayed potential to be further developed for FO applications.

Paper Citation

in Harvard Style

Jin H., Lin L., Liu M., Li Q., Huang Z., Tang X. and Yu P. (2018). Preparation of Nano-silica Dioxide Modified Cellulose Acetate (CA) Membranes for Enhanced Performance in Forward Osmosis Process.In Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG, ISBN 978-989-758-342-1, pages 163-169. DOI: 10.5220/0007427501630169

in Bibtex Style

@conference{iweg18,
author={Haiyang Jin and Li Lin and Min Liu and Qingyun Li and Zhuo Huang and Xianqiang Tang and Ping Yu},
title={Preparation of Nano-silica Dioxide Modified Cellulose Acetate (CA) Membranes for Enhanced Performance in Forward Osmosis Process},
booktitle={Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,},
year={2018},
pages={163-169},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007427501630169},
isbn={978-989-758-342-1},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environment and Geoscience - Volume 1: IWEG,
TI - Preparation of Nano-silica Dioxide Modified Cellulose Acetate (CA) Membranes for Enhanced Performance in Forward Osmosis Process
SN - 978-989-758-342-1
AU - Jin H.
AU - Lin L.
AU - Liu M.
AU - Li Q.
AU - Huang Z.
AU - Tang X.
AU - Yu P.
PY - 2018
SP - 163
EP - 169
DO - 10.5220/0007427501630169