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    CO2 fixation and production of biodiesel by Chlorella vulgaris NIOCCV under mixotrophic cultivation

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    Date
    2019
    Author
    Jain, D.
    Ghonse, S.S.
    Trivedi, T.
    Fernandes, G.L.
    Menezes, L.D.
    Damare, S.R.
    Mamatha, S.S.
    Kumar, Sanjay
    Gupta, V.
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    Abstract
    In this study, Chlorella vulgaris NIOCCV was cultivated in seafood processing industry wastewater with continuous supply of 5%, 10%, and 20% CO2. The optimum CO2 fixation efficiency (RCO2), biomass productivity, specific growth rate (SGR), and lipid content recorded were 0.43-mg-L-1-d-1, 264.58-±-8.8-mg-L-1-d-1, 0.46-d-1, and 38-±-2.6% on dry weight basis, respectively at CO2 supply of 10%. The fatty acid methyl ester-derived biodiesel properties determined at same condition were in compliance with national and international fuel standards. The higher calorific value (HHV) of the resultant biomass was 11.14, 16.41 and 12.83-MJ Kg-1 for CO2 enrichment of 5%, 10%, and 20%, respectively. The synergistic environmental benefit of nutrients removal from wastewater is shown as an additional advantage of microalgal cultivation. Thus, integration of algae-based CO2 fixation with wastewater treatment and biodiesel production may realize microalgal CO2 capture technology as environmentally sustainable and economically more attractive.
    URI
    https://doi.org/10.1016/J.BIORTECH.2018.09.148
    http://drs.nio.org/drs/handle/2264/8112
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