| Texto completo | |
| Autor(es): |
Marin, Danieli Fernanda Canaver
;
Rodrigues, Caroline Varella
;
Maintinguer, Sandra Imaculada
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY; v. 100, p. 11-pg., 2024-12-23. |
| Resumo | |
This study investigated expired dairy product (EDP) removals in a two-stage system in anaerobic batch reactors co-digested with synthetic domestic wastewater (SDW) to evaluate H2 and CH4 production. Acidogenesis was performed in anaerobic batch reactors with 10%, 15%, and 20% EDP (v/v) mixed with SDW, and the effluents were the substrate for methanogenic reactors. During acidogenesis, reactors with 10%, 15%, and 20% EDP achieved 86.8%, 90.1%, and 92.3% carbohydrate removal, producing 1.5, 1.9, and 1.7 mol H2 per mol carbohydrate removed, respectively. Paraclostridium was the dominant genus (55.7-82.7%) involved in hydrogen, volatile fatty acid (VFA) and alcohol generation. Methanogenesis assays with 10% and 15% EDP achieved high methane yields (323.0 and 225.1 mL CH4 gVSadd-1) and COD removals (91.8% and 94.7%), while 20% EDPs led to inhibition due to VFA accumulation. Methanosaeta was prevalent in high-yield reactors, correlating with effective COD removal. This study highlights the potential for EDP recovery through biogas production. (AU) | |
| Processo FAPESP: | 17/16795-3 - Re-aproveitamento de residuos da produção de biodiesel na geração de bioenergia em biossistemas anaeróbios integrados |
| Beneficiário: | Sandra Imaculada Maintinguer |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |