Work

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

Year: 2024

Type: article

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.

Source: Energies

DOI: 10.3390/en18010011

Authors: Bartłomiej Macherzyński, Elżbieta Popowska-Nowak, Maria Włodarczyk-Makuła, Beata Bień, Małgorzata Wszelaka-Rylik

Institutions: Cardinal Stefan Wyszynski University in Warsaw, Częstochowa University of Technology

Language: English

Topic: Anaerobic Digestion and Biogas Production

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $2,955