Development of Digestate for Energy Purposes Using Excess Heat from Biogas Plants

Marcin Herkowiak (), Mariusz Adamski, Przemysław Marek, Bogusława Waliszewska, Katarzyna Dzida, Magdalena Kapłan and Kamila E. Klimek
Additional contact information
Marcin Herkowiak: Institute of Technology and Life Sciences, National Research Institute, Falenty, Al. Hrabska 3, 05-090 Raszyn, Poland
Mariusz Adamski: Department of Biosystems Engineering, Poznań University of Life Sciences, 50 Wojska Polskiego Str., 60-627 Poznań, Poland
Przemysław Marek: Institute of Technology and Life Sciences, National Research Institute, Falenty, Al. Hrabska 3, 05-090 Raszyn, Poland
Bogusława Waliszewska: Department of Chemical Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 38/42, 60-637 Poznań, Poland
Katarzyna Dzida: Institute of Horticulture Production, University of Life Sciences in Lublin, 28 Gleboka Str., 20-612 Lublin, Poland
Magdalena Kapłan: Institute of Horticulture Production, University of Life Sciences in Lublin, 28 Gleboka Str., 20-612 Lublin, Poland
Kamila E. Klimek: Department of Applied Mathematics and Computer Science, University of Life Sciences in Lublin, 28 Gleboka Str., 20-612 Lublin, Poland

Energies, 2025, vol. 18, issue 18, 1-19

Abstract: The paper presents an analysis of methods for utilizing digestate for energy purposes from two different biogas plants using different technologies. Biogas plant A used only cattle manure and corn silage as substrates, while biogas plant B used technology based on the utilization of food production waste. The analysis showed differences in the chemical, elemental, and thermogravimetric composition of both types of digestate. An analysis of the energy inputs required to produce fuel from digestate was also performed, along with energy balance calculations. The research and analysis led to the conclusion that both types of digestate are suitable for energy recovery. The possibilities of optimizing the process using excess heat from the biogas plant were also analyzed. In the case of digestate A, the combustion heat of digestate B was 17.20 MJ·kg −1 , while for digestate A, it was 14.80 MJ·kg −1 . The calorific value of digestate A at 8.79% moisture content was 13.40 MJ·kg −1 , while for digestate B at 6.03% moisture content, it was 15.80 MJ·kg −1 , respectively.

Keywords: digestate; solid biofuel; combustion; energy balance (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
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/18/18/4896/pdf (application/pdf)
https://www.mdpi.com/1996-1073/18/18/4896/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:18:y:2025:i:18:p:4896-:d:1749798

Access Statistics for this article

Energies is currently edited by Ms. Cassie Shen

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().