Análise do potencial energético de dois diferentes tipos de cama de frango utilizando a atividade metanogênica específica

Abstract

Poultry litter contains droppings and feathers of birds, wasted feed and the moisture absorbing materials used on the floor of aviaries, becoming thus a residue with a high concentration of nutrients that can impact the soil due to the large amount . In this context it is necessary a new provision for the waste produced, called biomass, and reuse. The purpose of this study was to evaluate the energy potential obtained with poultry litter decomposition, through bench biodigesters and compare two different types of compounds: wood shavings and rice husk. By means of measurements of specific methanogenic activity of three amounts of total solids (5, 8 and 10%) and the statistical tests, ANOVA and Scott-Knott, it was found that the chicken litter comprised of rice hulls least biogas produced in relative to the shavings due to rice husk be more recalcitrant and to verify that the total solids range also influences methane production. Therefore it is concluded that for conversion into electrical energy poultry litter comprising wood shavings protrudes rice husks, and about 8% total solids was produced more methane. So the use of poultry litter biomass is a viable alternative in the production of biogas, capable of replacing traditional fuels and electricity consumed in poultry properties.