The Efficiency of the Biogas Plant Operation Depending on the Substrate Used

Janina Piekutin,Michał Haczykowski,Katarzyna Dyczewska,Monika Puchlik

doi:10.3390/en14113157

Janina Piekutin, Michał Haczykowski + Show 2 more

Open Access

https://doi.org/10.3390/en14113157

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Journal: Energies	Publication Date: May 28, 2021
Citations: 14	License type: CC BY 4.0

Affiliation: Bialystok University of Technology

Abstract

The study aimed to assess the most efficient solution of raw material management in selected biogas plants into the concept of circular economy and evaluate the most efficient solution of raw material management in selected biogas plants due to the quality and quantity of the feed and the final product obtained, which is biogas, as well at the closed circulation (circular economy). The study evaluated two agricultural biogas plants on a real scale and one at the sewage treatment plant (in real scale) in northeastern Poland. A year-long study showed that in technical terms, the best work efficiency is achieved by agricultural biogas plants processing: silage, manure, apple pomace, potato pulp (biogas plant No. 1), followed by biogas plant No. 3 processing chicken manure, decoction, cattle manure, poultry slaughterhouse waste (sewage sludge, flotate, feathers), and finally, the lowest efficiency biogas plant was No. 2, the sewage treatment plant, which stabilized sewage sludge in the methane fermentation process. Moreover, based on the results, it was found that agricultural biogas gives the best efficiency in energy production from 1 ton of feed.

Highlights

Energy is the lifeblood of modern civilization
Two of them were agricultural biogas plants and the third was the biogas plant at the sewage treatment plant. All these biogas plants carry out wet fermentation but in different conditions
In biogas plant No 1, biogas is produced in two main fermentation tanks, and in the third, digestate, additional methane that did not manage to release, is recovered

Summary

Introduction

Energy is the lifeblood of modern civilization. Biogas is a viable source of energy to tackle the problem of this energy crisis in agriculture-based developing countries [1]. In 2013–2017, the use of agricultural biogas increased significantly, while biogas from sewage treatment plants, such as landfill biogas in 2015 and 2016, had their best time, which is associated with a slowdown in the development of these installations in favor of agriculture [5,6,8]. The inhibition of these industries is probably caused by the modernization of wastewater treatment and production of less sludge and the growing awareness of residents about sorting and reducing waste production. The study aimed to assess the most efficient solution of raw material management in selected biogas plants due to the quality and quantity of feedstock and the final product obtained, which is biogas and the closed circulation (circular economy) [8]

Materials and Methods

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Results and Discussion

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II III IV V VI VII VIII IX X XI XII months