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Intensification of Energy Production in the Anaerobic Digestion Process of Sewage Sludge Using Enzymatic Disintegration

Author

Listed:
  • Bartłomiej Macherzyński

    (Faculty of Biology and Environmental Science, Cardinal Stefan Wyszynski University in Warsaw, Wóycickiego 1/3 Str, 01-938 Warsaw, Poland)

  • Elżbieta Popowska-Nowak

    (Faculty of Biology and Environmental Science, Cardinal Stefan Wyszynski University in Warsaw, Wóycickiego 1/3 Str, 01-938 Warsaw, Poland)

  • Maria Włodarczyk-Makuła

    (Faculty of Infrastructure and Environment, Częstochowa University of Technology, 69 J.H. Dąbrowskiego Str., 42-200 Częstochowa, Poland)

  • Beata Bień

    (Faculty of Infrastructure and Environment, Częstochowa University of Technology, 69 J.H. Dąbrowskiego Str., 42-200 Częstochowa, Poland)

  • Małgorzata Wszelaka-Rylik

    (Faculty of Biology and Environmental Science, Cardinal Stefan Wyszynski University in Warsaw, Wóycickiego 1/3 Str, 01-938 Warsaw, Poland)

Abstract

This paper presents results of a study on changes in the physical and chemical properties of papain-disintegrated sewage sludge subjected to methane fermentation and the effect of enzymes on the colony number of Escherichia coli , Salmonella spp. and Legionella spp. Fermentation studies were conducted in five batches, in which papain was introduced in amounts representing 0, 1, 2, 3 and 4% ( w / w ) by weight of the sludge dry matter content. The use of enzymatic disintegration allowed us to intensify the decomposition of organic compounds in the digestion process up to 31% and increase biogas production up to 41% compared to control sludge. At the same time, an almost complete reduction (99–100%) in the colony number of E. coli and Salmonella spp. could be achieved. Therefore, enzymatic disintegration can be competitive with physical or chemical disintegration methods.

Suggested Citation

  • Bartłomiej Macherzyński & Elżbieta Popowska-Nowak & Maria Włodarczyk-Makuła & Beata Bień & Małgorzata Wszelaka-Rylik, 2024. "Intensification of Energy Production in the Anaerobic Digestion Process of Sewage Sludge Using Enzymatic Disintegration," Energies, MDPI, vol. 18(1), pages 1-14, December.
    • Handle: RePEc:gam:jeners:v:18:y:2024:i:1:p:11-:d:1551341
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