Influência da maravalha no rendimento de biogás gerado a partir do efluente da bovinocultura de leite

• Ano de defesa: 2015
• Autor(a) principal: Müller, Ricardo
• Orientador(a): Feiden, Armin
• Banca de defesa: Silva, Nardel Luiz Soares da , Freitas, Kátya Regina de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual do Oeste do Parana
• Programa de Pós-Graduação: Programa de Pós-Graduação Stricto Sensu em Energia na Agricultura
• Departamento: Agroenergia
• País: BR
• Palavras-chave em Português: Metano; Bovinocultura leiteira; Maravalha; Resíduo lignocelulosico; Energia na agricultura
• Palavras-chave em Inglês: Methane; Dairy cattle; Shavings; Llignocellulosic waste; Energy in agriculture
• Área do conhecimento CNPq: CNPQ::CIENCIAS AGRARIAS
• Link de acesso: http://tede.unioeste.br:8080/tede/handle/tede/762

The development of technologies for treatment of agroindustry effluents has been primarily driven by auto sufficiency energy, either thermal or electric, from biogas. The biogas processes are well resolved commercially in Brazil. However, the heterogeneity of the agroindustrial effluents demand better understanding, especially of dairy cattle. The selected farm for effluent collects does a primary treatment by means of an extruder, before the digestion process, who turns out to generate a pasty material composed primarily of wood shavings. In that context, this study aimed to evaluate the influence of wood shavings, used as bedding for the cows lactating and the production of biogas, thus, to understand the behavior of the effluent before and after the extrusion process were outlined four treatments: raw effluent, without any separation process (T1); extruded liquid effluent (T2); paste extruded effluent (T3); and white control, with only inoculum (T4). The samples were collected the months of May and April and sent to the lab CIbiogás-ER, called Labiogás where analyzed: Volatile Solids (SV); Total solids (TS); pH; maximum production of biogas and methane; and specific production of biogas and methane, by the method of German VDI 4630 (2006) in eudiômetros batch for 31 days. The results indicated that the T1 predominantly had better results than the other treatments except for the maximum production of biogas and methane, in which T3 had 94% more efficiency compared to T1, T2 and T4 to 99%, with maximum production of biogas 0,054m³ / kg substrate and 0,030m³ / kg for methane, pointing to the ability of wood shavings to absorb nutrients Essential to the process of anaerobic digestion. There were differences (P <0.05) between treatments for maximum biogas production and 99.4% was delimited the adjusted multiple linear regression model Y=13,499 + 63,256*ST + 20,485*SV - 459,234*Rend. + 485,772*Prod. That can be used in the prediction results.