Journal
APPLIED SURFACE SCIENCE
Volume 351, Issue -, Pages 89-94Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2015.05.080
Keywords
Flocculation; Grafted; Cassava starch; PolyDADMAC; Kaolin suspension
Categories
Funding
- Ministry of Higher Education (Malaysia)
- USM PGRS [1001/PBAHAN 8046028]
- USM Research University (RU) [1001/PBAHAN/814131]
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In this work, flocculation properties of cassava starch grafted polydiallyldimethylammonium chloride (polyDADMAC) with different grafting percentages were investigated. Flocculation performance was evaluated in simulated kaolin suspension. The grafting percentages used were 1.76%, 14.84%, and 21.98 %. The effectiveness of the flocculation was measured based on the reduction of the turbidity and total suspended solids (TSSs), zeta potential measurements, particle size, and atomic force microscopy imaging. Grafted polymers improved the removal rate of turbidity and TSS compared with gelatinized starch, and the removal rate increased with increasing grafting percentage and dosage. (C) 2015 Elsevier B.V. All rights reserved.
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