Dichloroaniline retention by nanofiltration membranes.
This study evaluates the performance of two nanofiltration membranes in removing a herbicide: dichloroaniline. The membranes, one polyamide and one cellulose acetate, have a cut-off in the range 150-300 g/mol (manufacturers' data). The experiments were carried out with solutions of dichloroaniline in demineralized water, with concentrations from 1 to 10 ppb. For each membrane, the amount of herbicide retained and adsorbed by the membrane was determined as a function of feed concentration and transmembrane pressure. The two membranes, made of different materials but having the same nominal cut-off, retained dichloroaniline to very different extents and by different mechanisms.
Causserand
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Laboratoire de Génie Chimique, Université Paul Sabatier, 118 route de Narbonne, bât 2R1, 31062 Toulouse, Cedex 4, France. caussera@chimie.ups-tlse.fr
Aimar
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Cravedi
J P
JP
Singlande
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E
D000814:Aniline Compounds / Q000302:isolation & purification*; D005374:Filtration; D006540:Herbicides / Q000302:isolation & purification*; D008567:Membranes, Artificial; D036103:Nanotechnology; D014874:Water Pollutants, Chemical / Q000302:isolation & purification; D018508:Water Purification / Q000379:methods*
D000814:Aniline Compounds; D006540:Herbicides; D008567:Membranes, Artificial; D014874:Water Pollutants, Chemical; C054619:2,4-dichloroaniline