期刊
BIORESOURCE TECHNOLOGY
卷 131, 期 -, 页码 555-559出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.01.058
关键词
Chitosan; Nano-chitosan; Crosslinking; Algae harvesting; Flocculation
In this study, chitosan and nano-chitosan were used as flocculants agents for harvesting microalga Nannochloropsis sp. chitosan was modified to nano-chitosan by crosslinking with sodium tripolyphosphate. The effects of type and dosage of flocculants and the pH of the culture were investigated on biomass recovery. Optimum dosages for both bio-flocculants were found. The results showed that the dosage of flocculant consumption decreases by 40% and biomass recovery increases by 9% when nano-chitosan instead of chitosan is used as flocculant agent. Also, the recycled water from the harvesting process was reused which increases the growth of microalgae by about 7%. Finally, the cost analysis of harvesting process showed the feasibility of using nano-chitosan as flocculation agent. (c) 2013 Elsevier Ltd. All rights reserved.
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