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Effect of Bioaugmentation on Biogas Yields and Kinetics in Anaerobic Digestion of Sewage Sludge

Author

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  • Magdalena Lebiocka

    (Faculty of Environmental Engineering, Lublin University of Technology, 40B Nadbystrzycka, 20-618 Lublin, Poland)

  • Agnieszka Montusiewicz

    (Faculty of Environmental Engineering, Lublin University of Technology, 40B Nadbystrzycka, 20-618 Lublin, Poland)

  • Agnieszka Cydzik-Kwiatkowska

    (Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, 45g Słoneczna, 10-709 Olsztyn, Poland)

Abstract

Bioaugmentation with a mixture of microorganisms (Bacteria and Archaea) was applied to improve the anaerobic digestion of sewage sludge. The study was performed in reactors operating at a temperature of 35 °C in semi-flow mode. Three runs with different doses of bioaugmenting mixture were conducted. Bioaugmentation of sewage sludge improved fermentation and allowed satisfactory biogas/methane yields and a biodegradation efficiency of more than 46%, despite the decrease in hydraulic retention time (HRT) from 20 d to 16.7 d. Moreover, in terms of biogas production, the rate constant k increased from 0.071 h −1 to 0.087 h −1 as doses of the bioaugmenting mixture were increased, as compared to values of 0.066 h −1 and 0.069 h −1 obtained with sewage sludge alone. Next-generation sequencing revealed that Cytophaga sp. predominated among Bacteria in digesters and that the hydrogenotrophic methanogen Methanoculleus sp. was the most abundant genus among Archaea.

Suggested Citation

  • Magdalena Lebiocka & Agnieszka Montusiewicz & Agnieszka Cydzik-Kwiatkowska, 2018. "Effect of Bioaugmentation on Biogas Yields and Kinetics in Anaerobic Digestion of Sewage Sludge," IJERPH, MDPI, vol. 15(8), pages 1-16, August.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:8:p:1717-:d:163118
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    References listed on IDEAS

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    1. Krzysztof Poszytek & Joanna Karczewska-Golec & Anna Ciok & Przemyslaw Decewicz & Mikolaj Dziurzynski & Adrian Gorecki & Grazyna Jakusz & Tomasz Krucon & Pola Lomza & Krzysztof Romaniuk & Michal Styczy, 2018. "Genome-Guided Characterization of Ochrobactrum sp. POC9 Enhancing Sewage Sludge Utilization—Biotechnological Potential and Biosafety Considerations," IJERPH, MDPI, vol. 15(7), pages 1-17, July.
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    Cited by:

    1. Agnieszka A. Pilarska & Krzysztof Pilarski & Tomasz Kulupa & Adrianna Kubiak & Agnieszka Wolna-Maruwka & Alicja Niewiadomska & Jacek Dach, 2024. "Additives Improving the Efficiency of Biogas Production as an Alternative Energy Source—A Review," Energies, MDPI, vol. 17(17), pages 1-26, September.

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