Uso de cálculo estequiométrico para avaliação da produção de biogás obtido da água residuária do café

• Autor(a) principal: Malaquias, Eveline Oliveira
• Data de Publicação: 2021
• Outros Autores: Pereira Junior, Antônio Augusto Martins, Silveira, Pedro Henrique Poubel Mendonça da, Altoé, Leandra, Teles, Cláudia Rodrigues
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Brazilian Journal of Production Engineering
• Texto Completo: https://periodicos.ufes.br/bjpe/article/view/34548
• topic: Fontes Renováveis de Energia; Biomassa; Biogás; Cafeicultura; Resíduos Agrícolas; Renewable Energy Sources; Biomass; Biogas; Coffee growing; Agricultural waste; Fuentes de energía renovable; biomasa; biogás; cultivo de cafe; Residuos agrícolas

Agribusiness stands out for its participation in the Brazilian economy and for the expressive generation of jobs and income. In this sector, coffee activity is of great importance, with Brazil being the world's largest producer and exporter of this grain. However, its cultivation generates a large amount of waste that, if not properly treated, can be highly harmful in causing impacts and imbalances to the environment. When the coffee is processed in a wet way, an effluent with a high organic content, called coffee wastewater (ARC), is generated. The objective was to study the potential of biogas production from ARC in a rural property in Minas Gerais. Samples treated with wet conditions, collected on a farm that produces Arabica coffee, were considered in Conselheiro Pena - Minas Gerais. The samples were subjected to physical-chemical analysis and then the production of methane, which makes up the biogas, was evaluated by stoichiometric calculation. It was found that the amount of methane generated was not sufficient to justify the energy use of ARC for the studied rural property. An alternative would be the co-digestion to increase the organic load and, consequently, the potential for energy generation