期刊
PROCESS BIOCHEMISTRY
卷 48, 期 7, 页码 1107-1110出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.procbio.2013.04.018
关键词
Harvesting; Chitosan; Flocculation; Biomass recovery; Chlorella vulgaris
资金
- National Research Foundation of Korea (NRF)
- Korea government Ministry of Education, Science and Technology (MEST) [NRF-2012M1A2A2026587]
In this study, chitosan was used as a flocculant to harvest freshwater microalgae Chlorella vulgaris. The recovery efficiency of C. vulgaris was tested at various chitosan concentrations. 120 mg/L of chitosan showed the highest efficiency (92 +/- 0.4%) within 3 min. The maximum concentration factor of 10 was also achieved at this dose of chitosan. The harvesting efficiency was pH dependent. pH 6.0 showed the highest harvesting efficiency (99 +/- 0.5%). Measurement of zeta-potential confirmed that the flocculation was induced by charge neutralization. This study showed that a biopolymer, chitosan, can be a promising flocculant due to its high efficacy, low dose requirements, and short settling time. (C) 2013 Elsevier Ltd. All rights reserved.
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