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A Comparative Study on Microalgae Recovery Rates in Response to Different Low Cost Bio-flocculant Applications
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 Title & Authors
A Comparative Study on Microalgae Recovery Rates in Response to Different Low Cost Bio-flocculant Applications
Choi, Hee-Jeong;
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 Abstract
In this study, low cost bio-flocculants, chitosan, cationic starch and Mg-sericite, were used as a flocculant to harvest freshwater microalgae, Chlorella vulgaris. Chitosan, cationic starch and Mg-sericite separated successfully >98% of C. vulgaris at following optimal parameters: 90 mg/L chitosan at pH 6-7, 70 mg/L cationic starch at pH 9-10 and 50 mg/L Mg-sericite at pH 4-5. A relatively high correlation coefficient (R2) of 0.9993 for chitosan, 0.9971 for catonic starch and 0.9924 for Mg-sericite was obtained. The investigated flocculants amount increased linearly with increasing the microalgae amount. The biopolymer, Mg-sericite, was more effective than that of other investigated flocculants. These results indicated that a bio-flocculants, chitosan, cationic starch and Mg-sericite, could prove to be an effective flocculant for economical production of microalgae biomass. In addition, Mg-sericite was more effective comparing to the other investigated flocculants.
 Keywords
Cationic starch;Chitosan;Flocculation;Harvesting;Microalgae;Mg-sericite;
 Language
Korean
 Cited by
1.
Application of Saccharified Acorn-starch for Biomass and Lipid Accumulation of Microalgae, Journal of Korean Society on Water Environment, 2016, 32, 2, 197  crossref(new windwow)
2.
Application of methyl-esterified sericite for harvesting microalgae species, Journal of Environmental Chemical Engineering, 2016, 4, 3, 3593  crossref(new windwow)
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