Journal
DESALINATION
Volume 266, Issue 1-3, Pages 108-113Publisher
ELSEVIER
DOI: 10.1016/j.desal.2010.08.009
Keywords
Hybrid polymer; Ferric chloride; Polyacrylamide; Kaolin suspension; Dye wastewater; Flocculation
Categories
Funding
- Universiti Sains Malaysia
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A ferric chloride-polyacrylamide inorganic-organic hybrid polymer has been synthesized using a ferric chloride/polyacrylamide ratio of 1:1 via free radical solution polymerization. A redox initiation system - (NH4)(2)S2O8 and NaHSO3 was used to initiate the polymerization at 50 degrees C in aqueous medium. The ferric chloride-polyacrylamide hybrid polymer was characterized using Fourier transform infrared (FT-IR) spectrometer to determine their functional groups in the hybrid polymer chain. The FeCl3-PAM hybrid polymer was tested for flocculating activities on kaolin suspension and Terasil Red R dye wastewater. Parameters such as solution pH and FeCl3-PAM hybrid polymer dosage have been studied. One-way ANOVA shows that pH has a significant impact (p < 0.05) in flocculating both kaolin suspension and Terasil Red R wastewater. The results show a minimum dosage of 2 mg/L is able to remove more than 99% of turbidity in kaolin suspension at pH 2. FeCl3-PAM hybrid polymer also shows its capability in flocculating Terasil Red R dye wastewater. It is able to reduce 89% of COD and 99% of colour at pH 5 using 500 mg/L of dosage. (C) 2010 Elsevier B.V. All rights reserved.
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