Dichloroaniline retention by nanofiltration membranes |
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Authors: | Causserand C Aimar P Cravedi J P Singlande E |
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Affiliation: | Laboratoire de Génie Chimique, Université Paul Sabatier, 118 route de Narbonne, bat 2R1, 31062 Toulouse, Cedex 4, France. caussera@chimie.ups-tlse.fr |
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Abstract: | 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. |
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Keywords: | Nanofiltration Membranes Pesticide Dichloroaniline Retention mechanisms Adsorption |
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