Methane Production Potential from Apple Pomace, Cabbage Leaves, Pumpkin Residue and Walnut Husks

Applied Sciences

Robert Czubaszek¹  Agnieszka Wysocka-Czubaszek¹  Rafał Tyborowski¹ 

[1]Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45A Str., 15-351 Bialystok, Poland

关键词: renewable energy;    biogas;    apple pomace;    cabbage leaves;    pumpkin residue;    walnut husks;   

DOI  :  10.3390/app12126128

来源: DOAJ

【 摘 要 】

Circular economy aims to eliminate organic waste through its transformation, composting and processing into other products or energy. The main aim of the study was to determine the specific methane yield (SMY) of anaerobic digestion (AD) of four different fruit and vegetable residues (FVR). In addition, the reduction in greenhouse gas (GHG) emissions was calculated based on the assumption that maize will be replaced by the FVR as a feedstock for biogas production. The SMY of four residues (apple pomace, cabbage leaves, pumpkin peels and fibrous strands and walnut husks) was measured in the biomethane potential test (BMP) in wet anaerobic digestion technology. The highest SMY (297.81 ± 0.65 NL kg_VS⁻¹) was observed for cabbage leaves while the lowest SMY (131.07 ± 1.30 kg_VS⁻¹) was found for walnut husks. The concentrations of two inhibitory gasses (NH₃ and H₂S) in biogas were low and did not affect the AD process. Only biogas produced from cabbage leaves was characterised by higher NH₃ and H₂S concentrations resulting from the highest protein concentration in this waste. FVR used as feedstock in biogas production may decrease the area of maize cultivation. Therefore, the GHG emissions from maize cultivation will be reduced. In Poland only, the use of four studied FVR as feedstock for biogas production would contribute to the reduction of GHG emissions by 43,682 t CO₂ eq.

【 授权许可】

Unknown