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http://dx.doi.org/10.9713/kcer.2018.56.1.73

Selection of Organic Carbon (Different Form of Acetate Compounds and Concentration) for Cultivation of Anabena under Mixotrophic Cultivation Mode  

Hong, Kai (Department of Environmental Engineering, Pukyong National University)
Gao, Siyuan (Department of Environmental Engineering, Pukyong National University)
Lee, Taeyoon (Department of Environmental Engineering, Pukyong National University)
Publication Information
Korean Chemical Engineering Research / v.56, no.1, 2018 , pp. 73-78 More about this Journal
Abstract
The main objective of this study was to evaluate the effects of acetate on the cultivation of anabena under mixotrophic condition. Four different types of acetates were used for the anebena cultivation. Among them, ethyl acetate was found to be the most effective and the growth rates linearly increased as the amount of ethyl acetate increased. When 40 mM of ethyl acetate was used, the highest values of specific growth rate of $0.979day^{-1}$ and maximum biomass productivity of $0.293g\;L^{-1}\;d^{-1}$ were obtained. On the contrary, input of acetic acid and butyl acetate inhibited the growth of anabena. For aeration tests, 0.54 vvm was optimum for anabena cultivation. For a semi-continuous cultivation test, ethyl acetate was used after 0.54 vvm test was finished. Then, test continued under 0.54 vvm and 40 mM of ethyl acetate. Lower specific growth rate and maximum biomass productivity were obtained compared to those from batch cultivation tests. However, the greatest maximum concentration of 5.91 g/L was obtained during the semi-continuous cultivation test.
Keywords
Anabena azollae; Mixotrophic cultivation; Specific growth rate; Maximum biomass productivity; Semi-continuous cultivation;
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