Produção de metano a partir de resíduos do beneficiamento da acerola

Abstract

Brazil and the world have been going through an energy crisis in which there's a search for efficient alternatives, clean and that accompanying economic growth. Renewable energies are gaining over the years their space and recognition for its efficiency. Biomass has proved to be an alternative of solid, liquid and gaseous fuels from organic host materials. This study aimed to evaluate the production of methane from processing the waste of acerola, using manure of sheep breeding and pig farming as inoculants, in order to allocate appropriately the waste discarded in the environment. The experiment was divided into two stages, with experimental digesters bench with 2L capacity, lasting 112 days. The treatments were named T1, T2, T3 and T4 with three replications and two white (control), in the first stage and second stage T1, T2 and T3 in duplicate where we standardized inoculum 10% and the substrate, residue of acerola ranging T1 100%, T2 to 75% T3 50% and T4 25% in the second stage in T1 and T2 repeated the concentration of substrate according to the first stage, 100% and 50%, changing only the inoculum, the pig, and maintaining standardization to 10%, since the T3 saturated raising the substrate 300%. In the first phase of the treatment reached higher peak production of methane and shorter treatment was 1. In the second reaching the highest methane production was Treatment 3, and which reached their maximum production was shorter Treatment 2. Data analysis was observed by Origin software and the applied model was the Gompertz. It was concluded that the swine waste have better performance against the waste of sheep breeding, due to a favorable rate anaerobic fermentation, producing larger quantity of methane. And with respect to the substrate, it was concluded that the more the substrate, the more organic matter will methanogenic bacteria to degrade, taking even more time to degradation produce more methane.