Parâmetros de dimensionamento para biodigestores batelada operados com dejetos de vacas leiteiras com e sem uso de inóculo

摘要: The aim of this work was to evaluate the inoculum addition on anaerobic digestion dairy cattle manure recycled in batch digesters by biogas yield, volatile solids reduction and potential production obtain design parameters. Twelve field (60 L each) filled with catlle manure, water four different additions (0, 20, 30 40%, v/v) were used. Average times hydraulic retention 75 150 days adopted for treatments without inoculum, respectively, during three periods year (intermediary, rainy dry). greatest daily yields occurred higher room temperatures (rainy period). Higher obtained using 40% 0.07 m3 kg-1 rapid use from days. Times 45 may be adopted, which reduces volume digester implementation costs.