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http://dx.doi.org/10.11001/jksww.2017.31.4.357

Effects of volatile fatty acids on microalgae growth and N, P consumption in the advanced treatment process of digested food waste leachate by mixotrophic microalgae

Zhang, Shan (Department of Environmental Science and Engineering, Kyung Hee University)
Hwan, Sun-Jin (Department of Environmental Science and Engineering, Kyung Hee University)

Publication Information

Journal of Korean Society of Water and Wastewater / v.31, no.4, 2017 , pp. 357-362 More about this Journal

Abstract

Acetate, propionate, butyrate are the major soluble volatile fatty acids metabolites of fermented food waste leachates. This work investigate the effects of volatile fatty acid on the growth rate and $NH_4-N$ , $PO_4-P$ removal efficiency of mixotrophic microalgae Chlorella vulgaris to treat digested food waste leachates. The results showed that acetate, propionate and butyrate were efficiently utilized by Chlorella vulgaris and microalgae growth was higher than control condition. Similar trends were observed upon $NH_4-N$ and $PO_4-P$ consumption. Volatile fatty acids promoted Chlorella vulgaris growth, and nutrient removal efficiencies were highest when acetate was used, and butyrate and propionate showed second and third. From this work it could be said that using mixotrophic microalgae, in this work Chlorella vulgaris, fermented food waste leachates can be treated with high efficiencies.

Keywords

Chlorella vulgaris; digested food waste leachate; mixotrophic metabolism; volatile fatty acids;

Citations & Related Records

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