Produção de metano com resíduos de biotério utilizando fluido ruminal como inóculo

Abstract

Currently energy resources are increasingly scarce, the search for energy sources that accompany economic growth and provide good quality of life for the population are directly linked to energy supply. This study aimed to evaluate the production of methane from animal houses of waste using rumen fluid as inoculum in batch reactors. Thereby attempting to resolve the environmental issue for the disposal of waste and producing clean, renewable energy, thus contributing to the Brazilian energy matrix. For the experiment, Duran® 2L in triplicate flasks were used as reactors, batch, fed from different biomasses being vivarium inoculated with rumen fluid and may then assess the amount of biogas generated and the quality of the obtained methane. The biomass used were: A - pine shavings + laboratory animal waste (DAL); B - shavings corncob + DAL and shavings of cane sugar + DAL. All treatments were inoculated with bovine rumen fluid. Most of accumulated methane production was observed in R1 reactor, loaded with pine shavings and DAL (12.56 LCH4) also had the highest daily production of methane 0.0067 LCH4 / gSTV / d, to yield 0.256 LCH4 / gSTV . R2 and R3 reactors showed a cumulative production of 5.24 and 6.83 LCH4 LCH4, respectively, and yield 0.07 LCH4 / gSTV and 0.15 LCH4 / gSTV. Waste from laboratory animal breeding centers have biogas production potential. The concentration of methane from these substrates may vary depending on the compositions and reactor operating conditions.