Reuse of Fruit Waste as Biopolymeric Flocculant and Optimizing Turbidity Reduction: Comparison Study with Industrial Flocculant
Publication: Journal of Environmental Engineering
Volume 136, Issue 11
Abstract
The performance of two flocculants on turbidity reduction was studied. The two flocculants were: a biopolymeric flocculant which was extracted from fruit waste and a commercial industrial flocculant. The effect of the flocculants’ average molecular weight on turbidity treatment, the treatment efficiency of both flocculants and the flocculants’ degradability were investigated. Response surface methodology was carried out using Box Behnken design to find the optimal pH, cation concentration, and flocculant dosage to maximize the turbidity reduction. The results showed that the maximum turbidity reduction by industrial flocculant occurs between pH 7.5 and pH 8.2, cation concentration between 0.02 and 0.06 mM, and industrial flocculant dosage between 6.5 and 8.0 mg/L. While with biopolymeric flocculant, maximum turbidity reduction occurred between pH 4.6 and pH 7.5, cation concentration between 0.60 and 0.95 mM, and biopolymeric flocculant dosage between 4 and 6 mg/L.
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Acknowledgments
The writers would like to express their gratitude to Universiti Sains Malaysia (USM) for providing all facilities and writer Ho Y.C. wishes to thank USM for granting her the Institute of Graduate Studies (IPS) fellowship.
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Information
Published In
Journal of Environmental Engineering
Volume 136 • Issue 11 • November 2010
Pages: 1267 - 1276
Copyright
© 2010 ASCE.
History
Received: Jul 7, 2009
Accepted: Apr 25, 2010
Published online: May 19, 2010
Published in print: Nov 2010
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