G. Asman et O. Sanli, ULTRAFILTRATION OF FE(III) SOLUTIONS IN THE PRESENCE OF POLY(VINYL ALCOHOL) USING MODIFIED POLY(METHYL METHACRYLATE-CO-METHACRYLIC ACID) MEMBRANES, Journal of applied polymer science, 64(6), 1997, pp. 1115-1121
Poly(methyl methacrylate-methacrylic acid) P(MMA-MA) copolymer membran
es were used in the filtration process to concentrate Fe(III) solution
s. Suitable gelation period and thickness were determined, and transpo
rt properties of the membranes were modified using poly(ethylene glyco
l) (PEG) in the casting solution. The effects of pH and a complexable
polymer [poly(vinyl alcohol) (PVA)] on the rejection of iron were inve
stigated. Maximum recovery of 74% was obtained when the filtration was
carried out in the presence of PVA at pH 3.1. (C) 1997 John Wiley & S
ons, Inc.