Cross-flow micellar-enhanced ultrafiltration for removal of nitrate and chromate: competitive binding.
Feasibility of cross-flow micellar-enhanced ultrafiltration was investigated to remove chromate and nitrate from water system using a cationic surfactant, cetylpyridinium chloride (CPC). Removal of chromate with -2 as valence was higher than that of nitrate with -1 as valence in the conditions of co-existence of chromate and nitrate. Removal of nitrate was significantly inhibited by co-existence of chromate because of competitive binding to CPC micelles between chromate and nitrate, while that of chromate was only slightly inhibited by nitrate.
Baek
Kitae
K
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701, South Korea.
Yang
Ji-Won
JW
D001667:Binding, Competitive; D002840:Chromates / Q000302:isolation & purification*; D005374:Filtration; D008823:Micelles; D009566:Nitrates / Q000302:isolation & purification*; D012989:Soil Pollutants / Q000302:isolation & purification*; D014873:Water Pollutants / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
D002840:Chromates; D008823:Micelles; D009566:Nitrates; D012989:Soil Pollutants; D014873:Water Pollutants