Title: Highly charged cellulose-based nanocrystal as flocculants for harvesting Chlorella vulgaris
Authors: Vandamme, Dries *
Eyley, Sam *
Van den Mooter, Guy
Muylaert, Koenraad
Thielemans, Wim # ×
Issue Date: 17-Jul-2015
Publisher: Elsevier Applied Science
Series Title: Bioresource Technology vol:194 pages:270-275
Article number: BITE 15272
Abstract: This study presents a novel flocculant for harvesting Chlorella vulgaris as model species for freshwater microalgae based on cellulose nanocrystals (CNCs), synthesized from a renewable and biodegradable resource. Cationic pyridinium groups were grafted onto CNCs by two separate one-pot simultaneous esterification and nucleophilic substitution reactions. Both types of modified CNCs were positively charged in the pH range 4-11. Both reactions yielded CNCs with a high degree of substitution (up to 0.38). A maximum flocculation efficiency of 100% was achieved at a dosage of 0.1 g g−1 biomass. In contrast to conventional polymer flocculants, cationic CNCs were relatively insensitive to inhibition of flocculation by algal organic matter. The present results highlight the potential of these new type of nanocellulose-based flocculants for microalgae harvesting.
ISSN: 0960-8524
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Microbial and Molecular Systems, Campus Kulak Kortrijk
Chemical Engineering, Campus Kulak Kortrijk
Chemical Engineering - miscellaneous
Drug Delivery and Disposition
Biology, Campus Kulak Kortrijk
Department of Biology - miscellaneous
* (joint) first author
× corresponding author
# (joint) last author

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