Biodiesel production and simultaneous treatment of domestic and livestock wastewater using indigenous microalgae, Chlorella sorokiniana JD1-1

Biodiesel production and simultaneous treatment of domestic and livestock wastewater using indigenous microalgae, Chlorella sorokiniana JD1-1

Abstract In this study, the potential of Chlorella sorokiniana JD1-1 for biodiesel production was evaluated using domestic wastewater (DWW) as a diluent for locally-generated livestock wastewater (LWW). This strategy aimed to provide sustainable wastewater treatment, reduce environmental impacts, en...

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Published in:Scientific reports 2023-09, Vol.13 (1), p.15190-15190, Article 15190
Main Authors: Lee, Jae-Cheol, Moon, Kira, Lee, Nakyeong, Ryu, Sangdon, Song, Seung Hui, Kim, Yun Ji, Lee, Sung Moon, Kim, Hyun-Woo, Joo, Jae-Hyoung
Format: Article
Language:eng
Subjects:
Algae
Aquatic microorganisms
Biodiesel fuels
Biofuels
Chlorella sorokiniana
Diesel
Drinking water
Livestock
Nutrient balance
Wastewater treatment
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Summary:Abstract In this study, the potential of Chlorella sorokiniana JD1-1 for biodiesel production was evaluated using domestic wastewater (DWW) as a diluent for locally-generated livestock wastewater (LWW). This strategy aimed to provide sustainable wastewater treatment, reduce environmental impacts, enhance cost-effectiveness, and promote biodiesel production. LWW was diluted with tap water and DWW at ratios of 75%, 50%, and 25% (v/v), and the effects on microalgal growth, nutrient removal efficiency, and lipid yield were evaluated. Although the maximum biomass concentration was observed in the artificial growth medium (BG-11) (1170 mg L −1 ), 75% dilution using tap water (610 mg L −1 ) and DWW (780 mg L −1 ) yielded results comparable to the exclusive use of DWW (820 mg L −1 ), suggesting a potential for substitution. Total nitrogen (TN) removal rates were consistently high under all conditions, particularly in samples with higher concentrations of LWW. Conversely, total phosphorus (TP) concentrations decreased under most conditions, although some displayed large increases. Further studies are necessary to optimize the nutrient balance while maintaining economic feasibility and maximizing biodiesel production.
ISSN:2045-2322
2045-2322