Recycling spent mushroom substrate into fuel pellets for low-emission bioenergy producing systems

Autor(es)

Alves, Lucas da Silva ^[1] ; Moreira, Bruno Rafael de Almeida ^[2] ; Viana, Ronaldo da Silva ^[3] ; Pardo-Gimenez, Arturo ^[4] ; Dias, Eustaquio Souza ^[5] ; Noble, Ralph ^[6] ; Zied, Diego Cunha ^[3]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Unesp, Sch Agr & Vet Sci, Dept Appl Microbiol, Jaboticabal, SP - Brazil

^[2] Sao Paulo State Univ Unesp, Sch Agr & Vet Sci, Dept Engn & Exact Sci, Jaboticabal, SP - Brazil

^[3] Sao Paulo State Univ Unesp, Coll Agr & Technol Sci, Dept Plant Prod, Dracena, SP - Brazil

^[4] Ctr Invest Expt & Serv Champino CIES, Quintanar Del Rey - Spain

^[5] Univ Fed Lavras, Dept Biol, Lavras, MG - Brazil

^[6] Pershore Coll, Warwickshire Coll Grp, Pershore - England

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF CLEANER PRODUCTION; v. 313, SEP 1 2021.
• Citações Web of Science: 0

Resumo

This study aimed at analyzing the feasibility of converting diverse types of spent mushroom substrate (SMS) into fuel pellets for low-emission bioenergy producing systems. Sources of SMS for pelletization included paddy straw and achiote capsule shell from Pleurotus ostreatus, eucalyptus sawdust and grassy straw from Lentinula edodes, and compost with either peat or soil as a casing layer from Agaricus subrufescens. The pilot-scale manufacturing of fuel pellets consisted of compacting the feedstocks in an automatic pelletizer machine at 200 MPa and 125 degrees C. Pellets from SMS, irrespective of source, met the international standards for solid biofuels, except for ash content. However, due to moderate sulfur content (0.05%), they tended to low slagging (S < 0.60) and intermediate fouling (0.60 < F < 40.00) on a boiler's heating surface. Because of the significant ash content of 29.10-31.80%, these products resisted oxidation more at the onset of combustion, burned themselves out gradually and conducted 2.70-2.90 W g-1 heat at around 300 degrees C. Pellets of SMS from A. subrufescens grown on compost with soil casing, produced less heat (4.25 W g-1) than reference pellets from pinewood sawdust (5.10 W g-1), but emitted less CO2 (7.50 ppb vs 15.10 ppb), NOx (130.10 ppt vs 147.90 ppt), SO2 (3.15 ppt vs 16.70 ppt), and volatile organic compounds (17.65 mg m- 3 vs 27.20 mg m-3). Pelletization of SMSs valorized these agro-food residues via waste-to-energy pathways towards a circular economy. SMS from A. subrufescens grown on compost with soil casing had the best properties for high-performance pelletization. (AU)

• Processo FAPESP: 15/15306-3 - Avaliação de técnicas e processos na fungicultura: suplementação de substrato e utilização do composto exaurido no meio agrícola
• Beneficiário: Diego Cunha Zied
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 19/19866-4 - Novas alternativas para sistemas integrados sustentáveis: aspectos agronômicos e microbianos do milho após o cultivo ao campo de Cogumelo do Sol®
• Beneficiário: Lucas da Silva Alves
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 17/24234-1 - Rendimento energético da biomassa produzida do etanol de primeira e segunda geração, acrescido com glicerina bruta para produção de pellets
• Beneficiário: Ronaldo da Silva Viana
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular