Valorization of apple pomace for biogas production: a leading anaerobic biorefinery approach for a circular bioeconomy

Autor(es)

Ampese, Larissa Castro ; Sganzerla, William Gustavo ; Ziero, Henrique Di Domenico ; Costa, Josiel Martins ; Martins, Gilberto ; Forster-Carneiro, Tania

• Tipo de documento: Artigo Científico
• Fonte: BIOMASS CONVERSION AND BIOREFINERY; v. N/A, p. 15-pg., 2022-11-14.

Resumo

Apples are among the most consumed fruits worldwide, being consumed as fresh fruit or either processed into juice, vinegar, cider, and others. The by-products generated by apple processing industry are usually discarded without further application. This study addressed the valorization of apple pomace using dry anaerobic digestion technology in semi-continuous mode. The operational parameters, volatile fatty acids, microbial community, and biogas production were evaluated during 40 days of digestion. The potential for bioenergy production, avoided greenhouse gas emissions, and the energy balance were calculated to determine the possibilities for implementing an anaerobic biorefinery in the apple processing industry. The results showed a microbial community of the reactor composed of bacteria (97.5%) and Archaea (2.5%), where Amphibacillus was the dominant genus. The methane yield obtained was 36.61 L CH4 kg(-1)TVS(removed), which can generate 1.92 kWh ton(-1) of electricity and 8.63 MJ ton(-1) of heat, avoiding 0.62 kg CO2-eq ton(-1) apple pomace submitted to anaerobic digestion. The bioenergy recovered could supply 19.18% electricity and 11.15% heat of the anaerobic reactor used in the designed anaerobic biorefinery process. In conclusion, anaerobic digestion can be a promising approach for the management of apple pomace, decreasing greenhouse gas emissions and contributing to the circular economy transition of the apple processing industry. (AU)

• Processo FAPESP: 18/14938-4 - Waste2energy: integração das tecnologias supercrítica e digestão anaeróbia através de um sistema automatizado para produção de precursores de biocombustíveis
• Beneficiário: Tânia Forster Carneiro
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores - Fase 2
• Processo FAPESP: 19/26925-7 - Desenvolvimento de um sistema automatizado para produção de precursores de biocombustíveis através da tecnologia subcrítica
• Beneficiário: William Gustavo Sganzerla
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 21/03950-6 - Hidrólise subcrítica e digestão anaeróbia para produção de açucares e biogás a partir do bagaço de maçã proveniente do processamento de suco
• Beneficiário: Josiel Martins Costa
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado