Dry Anaerobic Digestion of Selectively Collected Biowaste: Technological Advances, Process Optimization and Energy Recovery Perspectives

Beata Bień, Anna Grobelak (), Jurand Bień, Daria Sławczyk, Kamil Kozłowski, Klaudia Wysokowska and Mateusz Rak
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Beata Bień: Faculty of Infrastructure and Environment, Czestochowa University of Technology, 42-201 Częstochowa, Poland
Anna Grobelak: Faculty of Infrastructure and Environment, Czestochowa University of Technology, 42-201 Częstochowa, Poland
Jurand Bień: Faculty of Infrastructure and Environment, Czestochowa University of Technology, 42-201 Częstochowa, Poland
Daria Sławczyk: Faculty of Infrastructure and Environment, Czestochowa University of Technology, 42-201 Częstochowa, Poland
Kamil Kozłowski: Biogas Technology, Kamil Kozłowski, Jana Woźniaka Street 18, 62-330 Nekla, Poland
Klaudia Wysokowska: Biogas Technology, Kamil Kozłowski, Jana Woźniaka Street 18, 62-330 Nekla, Poland
Mateusz Rak: Faculty of Electrical Engineering, Czestochowa University of Technology, 42-201 Częstochowa, Poland

Energies, 2025, vol. 18, issue 17, 1-35

Abstract: Given the increasing volume of selectively collected bio-waste and the requirement to increase waste treatment system energy efficiency, dry anaerobic digestion (DAD) represents a more sustainable choice for the treatment of municipal organic fraction instead of conventional technologies. The current paper provides an overview of the existing knowledge on DAD of green waste or kitchen waste collected selectively. Key substrates characteristics (chemical composition, methane potential), novel reactor design and process conditions relevant to effective digestion at elevated dry matter content are considered. Of special interest is the process intensification techniques, impact of contamination and co-fermentation opportunity with other biodegradable wastes. This article also discusses energy and economic performance of DAD plants and puts their environmental burden in perspective versus other bio-waste treatment processes. The current legislation and DAD’s role in the circular economy are also considered. Selectively collected biowaste has significant energy potential and dry anaerobic digestion is an effective technology, especially in areas with limited water availability, offering both waste volume reduction and minimized energy losses. The aim of this work is to introduce the potential of this technology as a sustainable option within the context of renewable energy and modern waste management.

Keywords: biowaste; bioenergy systems; dry anaerobic digestion; biogas yield; methane yield; waste-to-energy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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