Management of Tanning Waste from Leather Processing by Anaerobic Digestion Using a Dynamic Method on a Semi-Technical Scale

Michał Czarnecki (), Edyta Wrzesińska-Jędrusiak, Izabela Konkol, Lesław Świerczek, Karol Postawa, Marek Kułażyński and Andrzej Myczko
Additional contact information
Michał Czarnecki: Department of Technologies, Institute of Technology and Life Sciences—National Research Institute, Hrabska 3 Avenue, Falenty, 05-090 Raszyn, Poland
Edyta Wrzesińska-Jędrusiak: Department of Technologies, Institute of Technology and Life Sciences—National Research Institute, Hrabska 3 Avenue, Falenty, 05-090 Raszyn, Poland
Izabela Konkol: Department of Physical Aspects of Ecoenergy, The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14 St., 80-231 Gdańsk, Poland
Lesław Świerczek: Department of Physical Aspects of Ecoenergy, The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14 St., 80-231 Gdańsk, Poland
Karol Postawa: Department of Advanced Material Technology, Faculty of Chemistry, Wroclaw University of Science and Technology, ul. Gdańska 7 St., 50-344 Wrocław, Poland
Marek Kułażyński: Innovation and Implementation Company Ekomotor Ltd., Wyścigowa 1A, 53-011 Wrocław, Poland
Andrzej Myczko: Department of Technologies, Institute of Technology and Life Sciences—National Research Institute, Hrabska 3 Avenue, Falenty, 05-090 Raszyn, Poland

Sustainability, 2024, vol. 16, issue 21, 1-20

Abstract: In the context of climate policy, measures are being taken around the world to reduce pollution. These have been intensified in the areas of transport, industry, and energy, with the goal of zero emissions. The role of the biogas plant in energy transition and as a waste treatment plant for disposal is very important. This article describes research on a dynamic anaerobic digestion (AD) process plant. The subject of this study was leather shavings, which is a problematic waste. The research presented here is intended to demonstrate the decomposition of the flesh in the process, to confirm its biogas yield, and to evaluate the biological and technical parameters of the process. High biochemical stability was achieved for each of the tests evaluated, and no specific technical requirements were demonstrated. The only technical aspect to be addressed during operation was sedimentation, which can be solved by preparing the mixture earlier or by changing the mixing method. This made it reasonable to investigate the material further in the context of an industrial project. The characteristics of protein degradation in the AD process resulted in a high methane content in the biogas, above 65%. It was also observed that the long conditioning time of biogas in the gas cushion favourably affected the proportion of methane in biogas. Analytical results confirmed 77.5% methane content, which was a very good result. This paper presents the results of a surprising effect of chromium, primarily Cr (III), on the performance of anaerobic digestion.

Keywords: biogas; renewable energy sources; leather shavings; circular economy; energy storage (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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