Codigestão anaeróbia de dejeto suíno e carcaça suína: produção de biogás e inativação de patógenos
| Ano de defesa: | 2017 |
|---|---|
| Autor(a) principal: |
Tápparo, Deisi Cristina
 |
| Orientador(a): |
Kunz, Airton
|
| Banca de defesa: |
Kunz, Airton
,
Gomes, Simone Damasceno
,
Viancelli, Aline
|
| Tipo de documento: | Dissertação |
| Tipo de acesso: | Acesso aberto |
| Idioma: | por |
| Instituição de defesa: |
Universidade Estadual do Oeste do Paraná
Cascavel |
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia Agrícola
|
| Departamento: |
Centro de Ciências Exatas e Tecnológicas
|
| País: |
Brasil
|
| Palavras-chave em Português: | |
| Palavras-chave em Inglês: | |
| Área do conhecimento CNPq: | |
| Link de acesso: | http://tede.unioeste.br/handle/tede/2956 |
Resumo: | The swine breeding stands out on worldwide due to its constant growth. However, environmental problems have increased as the activity gains recognition, consequently, planning and management of waste produced have been required in the systems. Animal carcasses disposal inside or outside the animal rearing farms is under concern and object of discussion about good practices to do it considering biosecurity aspects. One alternative is the swine manure and swine carcass co-digestion in order to improve biogas production. At the same time, it is known that animal carcass has some pathogenic microorganisms of zoonotic importance. In this context, this research aimed at studying swine carcass co-digestion and swine manure as well as its implications on biogas yield and digestate sanitation. This study was carried out under mesophilic temperature (37 ºC) and triplicate tests. Biogas volume was measured using eudiometer tubes, according to VDI 4630. The trials used the carcass sample digestion in a separate way and loading rates of carcass/manure were 3, 7.5 and 15kg.m-3manure, which represented 1, 2.5 and 5 times of mortality/manure production rates on typical swine farms (Mortality rate of 7% .year-1 for matrices). The inactivation trials were carried out in separated. Then it was evaluated the inactivation of the following microorganisms models (E. coli, Salmonella enterica serovar Senftenberg, PCV2, and bacteriophage MS2 and PhiX-174). Four inactivation strategies were carried out at two temperatures (24 ºC and 37 ºC) and two swine carcass/swine manure ratios were also studied (3kgcarcass.m-3manure and 15 kgcarcass.m-3manure). The swine carcass presented biochemical methane potential (BMP) of 1076 ± 48 LNbiogas.kgSVadic-1, and its co-digestion with swine manure increases biogas production potential when compared to manure monodigestion. The model microorganisms such as E. coli, S. Senftenberg and PCV2 (37°C) were completely inactivated until 30 days, while PCV2 (24°C), MS2 and PhiX-174 were more resistant. The temperature of co-digestion process influences the time required for microorganisms’ inactivation. Inactivation results suggest that, during co-digestion at 37°C, there is a greater pathogen reduction when compared to the same process at 24° C. It is recommended to use a pre-treatment process to biodigestor without heating system and under mesophilic temperature to ensure biosafety. |