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6959619 
Journal Article 
INFLUENCES OF SURFACTANTS FOULING ON THE REMOVAL OF PHTHALATES BY NANOFILTRATION 
Ma, Y; Zhu, L 
2013 
0 
Shui Chu Li Ji Shu: Technology of Water Treatment
ISSN: 1000-3770 
39 
9 
28-35 
Chinese 
This study demonstrates the removal efficiency and the permeate flux behavior during cross-flow nanofiltration (NF) of aqueous solutions of three phthalic acid esters (PAEs). Dimethyl phthalate (DMP), diethyl phthalate (DEP) and dibutyl phthalate (DBP) were used as model of PAEs, and sodium alginate was selected as model of natural organic matter (NOM). Two commercial composite NF membranes (NF90 and NF270) with different characteristics were used. The rejections of DMP,DEP,DBP by NF90 were 87.9%, 95.3%, 100%, the rejections of DMP,DEP,DBP by NF270 were 32.1%, 50.4%, 50%. A clear time-dependence was observed for the rejection of DBP by NF270, which was attributed to the adsorption of micropollutants on the membrane. The addition of sodium alginate in the feed stream decreased the permeate flux of both membranes. Rejections of DMP by fouled NF90 and NF270 membranes increased by 5.9% and 2.4%, while slight decrease in rejection of DEP were observed for both fouled membranes. Changes of ionic content (from 10 mmol/L to 20 mmol/L) had a negligible influence on the rejection of organic micropollutants by NF90 membranes, while the rejection of DMP, DEP and DBP by NF270 membranes decreased by 2.4%, 1.5% and 1.5%, respectively. 
Pollution Abstracts; Environment Abstracts; Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; natural organic matter; nanofiltration; membrane fouling; phthalic acid esters; Water treatment; Organic matter; Membranes; Model Studies; Pollutants; Streams; Fluctuations; Fouling; Filtration; Alginates; Surfactants; Phthalates; Phthalate esters; Composite materials; Adsorption; P 2000:FRESHWATER POLLUTION; ENA 09:Land Use & Planning; SW 3060:Water treatment and distribution; AQ 00006:Sewage; Q5 08503:Characteristics, behavior and fate