The Pyrolysis of poultry manure with agricultural biomass for the production of biofuel – An experimental study on feedstock ratio for synergistic evaluation and product characterization

Abstract

Co-pyrolysis is an efficient way of reducing environmental pollution and turning poultry manure into biofuels and chemicals. This study examines a novel approach to turning poultry manure (PM) into biofuels by pyrolyzing it with agricultural biomass. The impact of combining sugarcane bagasse (SB) with PM under different proportions and their effect on the yield of pyrolysis oil, char, and gas were evaluated by mixing SB with PM in different mass ratios. The blended feedstocks PM80SB20 (80% PM + 20% SB), PM60SB40 (60% PM + 40% SB), PM50SB50 (50% PM + 50% SB), PM40SB60 (40% PM + 60% SB), and PM20SB80 (20% PM + 80% SB) have been prepared and co-pyrolyzed along with the individual pyrolysis of PM and SB. According to the findings, the yields from PM pyrolysis were 45.01 wt% for oil, 39.52 wt% for biochar, and 18.83 wt% for the gas product. The quality of the oil, char, and gaseous products is significantly enhanced by co-pyrolyzing PM with SB. The highest production of oil components (64.8 wt%) with positive synergy is obtained with the lowest yield of oxygenated elements under the ideal experimental conditions of 40% SB loading. It is also found that the co-pyrolysis oil has a higher calorific value than the PM pyrolysis oil. These findings demonstrate that, in contrast to PM pyrolysis products, PM could be recycled through co-pyrolysis with SB to produce oil, char, and gas with better properties.