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Synthesis of Amin-type Anion Exchanger from Acrylic Acid Grafted Polypropylene Nonwoven Fabric and Its Ion-exchange Property(II)  

Na, Choon-Ki (Department of Environmental Engineering, Mokpo National University)
Park, Hyun-Ju (Department of Environmental Engineering, Mokpo National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.9, 2009 , pp. 775-782 More about this Journal
Abstract
PP-g-AA-Am nonwoven fabric, which possess anionic exchangeable function, was prepared by chemical modification of carboxyl (-COOH) group of PP-g-AA nonwoven fabric to amine ($-NH_2$) group using diethylene triamine (DETA). Its adsorption characteristics for anionic nutrients including isotherm, kinetics and co-anions were studied by batch adsorption experiments. Adsorption equilibriums of $PO_4$-P on PP-g-AA-Am fabric were well described by the Langmuir isotherm model, and their adsorption energies were ranged 10.3 kJ/mol indicating an ion-exchange process as primary adsorption mechanism. The adsorption selectivity of PP-g-AA-Am nonwoven fabric for anions under competition with each other was in following order: $SO_4\;^{2-}$>$PO_4\;^{3-}$>$NO_3\;^-$>$NO_2\;^-$. Also, all results obtained from this study indicate that the $PO_4$-P removal capacity of PP-g-AA-Am nonwoven fabric was extremely superior to that of PA308 anion-exchange resin.
Keywords
Polypropylene nonwoven fabric; Amination; Anion exchange; $PO_4$-P; Ion selectivity;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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