Showing papers by "Mohamed Mahmoud Nasef published in 2008"

Preparation and Characterization of a New Coagulant Based on the Sago Starch Biopolymer and Its Application in Water Turbidity Removal

Abstract: A new organic coagulant, sago starch (SS)- graft-polyacrylamide (PAm), was prepared by the ceric- ion-induced redox polymerization of acrylamide (Am) onto SS at room temperature. The effects of the variation of the concentration of Am and the initiator on the percen- tages of yield and total conversion were investigated. The chemical composition, viscosity, and side-chain-average molecular weight of the obtained graft copolymers were determined. The newly obtained coagulant was tested for the treatment of the turbidity of water. The SS-g-PAm coagulants were found to achieve water turbidity removal up to 96.6%. The results of this study suggest that SS-g- PAm copolymer is a potential coagulant for reducing tur- bidity during water treatment. 2008 Wiley Periodicals, Inc. J Appl Polym Sci 109: 3140-3147, 2008