ANAEROBIC DIGESTION OF SWINE MANURE: STRATIFIED PRODUCTION UNITS AND ITS BIOGAS POTENTIAL

TÍTULO

ANAEROBIC DIGESTION OF SWINE MANURE: STRATIFIED PRODUCTION UNITS AND ITS BIOGAS POTENTIAL

DOCUMENTO - ARTIGO CIENTÍFICO

AUTORES - AMARAL, A.C; KUNZ, A; STEINMETZ, R. L. R; SCUSSIATO, L.A; TAPPARO, D.

RESUMO/ABSTRACT

Brazilian swine production is characterized by specialized units in certain stages of production. Manure from different stages of swine production presents different characteristics. Thus, the aim of this study was to investigate the biogas yield from swine manure of different production stage. Swine production stage studied were gestation sows house, farrowing sows house, nursery house and finishing house. Samples showed low concentrations of solids, indicating inadequate water management. Biogas yield were statistically different (5% significance) among all studied stages. The manure from nursery house presented the highest biogas and methane yield capacity 0.970 Nm3 .gVS-1 followed by the farrowing sows 0.865 Nm3.gVS-1, finishing pigs 0.474 Nm3.gVS-1 and gestation sows 0.326 Nm3 .gVS-1. The methane concentration in biogas varied from 52% to 66%. The swine growth stage affected the specific biogas yield.

Profissionais, estudantes e interessados na cadeia do biogás e, atuantes nas diversas áreas, etapas de projetos ou operação na produção de biogás.