Two-stage cultivation of two Chlorella sp strains by simultaneous treatment of brewery wastewater and maximizing lipid productivity

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Title
Two-stage cultivation of two Chlorella sp strains by simultaneous treatment of brewery wastewater and maximizing lipid productivity
Author(s)
W Farooq; Y C Lee; B G Ryu; Byung-Hyuk Kim; Hee-Sik Kim; Y E Choi; J W Yang
Bibliographic Citation
Bioresource Technology, vol. 132, pp. 230-238
Publication Year
2013
Abstract
A cultivation system in the two-stage photoautotrophic-photoheterotrophic/mixotrophic mode was adapted to maximize lipid productivity of two freshwater strains of Chlorella sp. grown in brewery wastewater (BWW). The endogenous Chlorella sp. isolated from BWW had a higher growth rate than wild-type Chlorella vulgaris (UTEX-265) while C. vulgaris (UTEX-265) had a higher maximal biomass and lipid contents than that of endogenous Chlorella sp., resulting in more than 90% of the inorganic nutrients in both total nitrogen (TN) and phosphorus (TP) was removed during the first stage in the two-stage photoautotrophic-photoheterotrophic mode in each Chlorella sp. The maximal biomass and lipid contents of C. vulgaris (UTEX-265) for single stage photoautotrophic cultivation were 1.5. g/L and 18%, respectively. Importantly, during two-stage photoautotrophic-photoheterotrophic cultivation for C. vulgaris (UTEX-265), the biomass was increased to 3.5. g/L, and the lipid productivity was increased from 31.1 to 108.0. mg/L. day.
Keyword
Contamination controlLipid productivityMicroalgal biodieselTwo-stage cultivationWastewater treatment
ISSN
0960-8524
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.biortech.2013.01.034
Type
Article
Appears in Collections:
Synthetic Biology and Bioengineering Research Institute > Cell Factory Research Center > 1. Journal Articles
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