Chitosan for Direct Bioflocculation Processes

Lichtfouse, Eric and Morin-Crini, Nadia and Fourmentin, Marc and Zemmouri, Hassiba and Nascimento, Inara Oliveira Carmo do and Queiroz, Luciano Matos and Mohd Yuhyi, Mohd Tadza and Picos-Corrales, Lorenzo A. and Pei, Haiyan and Wilson, Lee D. and Crini, Grégorio (2019) Chitosan for Direct Bioflocculation Processes. In: Sustainable Agriculture Reviews 36. Springer, Cham, pp. 335-380. ISBN 978-3-030-16581-9

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Coagulation-flocculation is a major process allowing to remove suspended particles from municipal and industrial wastewater. This process commonly involves metal salts as coagulants and synthetic organic polymers as flocculants. Although those chemicals are cheap, efficient, available and easy to use, they have drawbacks such water pollution by metals, and production of large amounts of toxic sludges. Therefore, safer biocoagulants and bioflocculants of biological origin are currently developed. For instance, the direct flocculation process involves water-soluble, ionic organic polymers, and thus do not need the addition of metal coagulants. In particular, chitosan and byproducts have been recently designed as bioflocculants to remove particulate matter and dissolved pollutants. Chitosan is a partially deacetylated polysaccharide obtained from chitin, a biopolymer extracted from shellfish sources. Chitosan exhibits various physicochemical and functional properties of interest for many environmental applications.

Item Type: Book Chapter
Uncontrolled Keywords: Chitosan; Bioflocculant; Direct bioflocculation; Wastewater treatment; Sludge dewatering
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Civil Engineering & Earth Resources
Depositing User: Noorul Farina Arifin
Date Deposited: 06 Aug 2019 08:31
Last Modified: 30 Oct 2019 06:47
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