期刊
BIORESOURCE TECHNOLOGY
卷 214, 期 -, 页码 276-283出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.04.107
关键词
Haematococcus pluvialis; Astaxanthin; Raceway pond; CO2
资金
- National Natural Science Foundation - China [51176163, 51476141]
- Zhejiang Provincial Natural Science Foundation - China [LR14E060002]
Up-down chute and oscillating (UCO) baffles were used to generate vortex and oscillating flow field to improve growth rate of Haematococcus pluvialis in a raceway pond. Effects of gas flow rate, solution velocity, and solution depth on solution mass transfer coefficient and mixing time were evaluated using online pH and dissolved oxygen probes. Mass transfer coefficient increased by 1.3 times and mixing time decreased by 33% when UCO baffles were used in the H. pluvialis solution, resulting in an 18% increase in biomass yield with 2% CO2. The H. pluvialis biomass yield further increased to 1.5 g/L, and astaxanthin composition accumulated to 29.7 mg/L under relatively higher light intensity and salinity. (C) 2016 Elsevier Ltd. All rights reserved.
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