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Chitosan Membranes for Reverse Osmosis Application
Author(s) -
YANG T.,
ZALL R. R.
Publication year - 1984
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1984.tb13677.x
Subject(s) - membrane , chitosan , reverse osmosis , acetic acid , casting , chemical engineering , forward osmosis , permeability (electromagnetism) , polyethylene glycol , chemistry , polymer chemistry , alkali metal , osmosis , materials science , chromatography , organic chemistry , composite material , biochemistry , engineering
Alkali resistant reverse osmosis membranes were fabricated by spreading solutions of chitosan, a poly‐N‐acetyl glucosamine, in 2.0% acetic acid on a glass plate. The membrane had a flux rate of 1.67 ± 10 ‐3 cm 3 /cm 2 /sec and a salt rejection capability of 78.8% with 0.2% NaCl at 680 psi. Addition of 40% polyethylene glycol to the membrane casting solution increased permeability, while 10% chloromethyl oxirane improved durability of the membranes.