Efficient management of poultry litter resulting from the ever growing agricultural industry is key to saving the global environment. In this study, effect of chicken type and reactor temperature on biofuel yields from pyrolysis of poultry litter has been studied. Samples of fresh droppings of broiler and layer chickens were collected from the poultry farm of Ladoke Akintola University of Technology, Ogbomoso, SouthWestern Nigeria. The samples were sun dried for two days and afterwards oven-dried at a temperature of 105 o C for 10 minutes. Samples of 40 g each were pyrolyzed at four different reactor temperatures (300, 400, 500 and 600 o C) for 15 minutes. The yield of pyro-oil and pyro-gas from the litter of the two chicken types increased with reactor temperature while char yield decreased with it. Pyro-oil yield from broiler litter was higher than that from layer litter at all temperatures while pyro-gas yield from layer litter was higher than that from broiler litter at all the conditions studied. The highest yield of pyro-oil (65.10% at 600 o C) was obtained from broiler litter while the highest yields of char (42.12% at 300 o C) and pyro-gas (25.7% at 600 o C) were recorded for layer litter. The presence of alkali metals in different proportions in broiler and layer litter was identified to have influenced pyrolysis secondary reactions. Cellulose, hemicellulose and lignin may also be in different percentages in the two types of chicken litter.

The lethargic modes of medical waste disposal in many developing countries have been a cause of concern to many regulatory agencies. In this study, effect of reactor temperature on pyrolysis of lignocellulosic medical waste in a fixed bed reactor was investigated. Gauze bandage was procured from AKOL Pharmacy, Ogbomoso, South-Western Nigeria. Samples of the gauze bandage, 40 g each at a time, were fed into a retort and the retort inserted into a developed fixed bed reactor for pyrolysis at different temperatures (300, 400, 500 and 600 o C) with a residence time of 15 minutes. Tar, gas and char yields were weighed using an electronic balance (WT20002T, RS232C) and were further expressed in percentage of the initial weight of the sample. Results showed that tar and gas yields increased with increasing reactor temperature while char yield decreased with it. Both intraand extra-particle secondary reactions were insignificant and therefore could not influence the yield spectra of products. The highest yield of tar, gas and char were 52.08, 28.42 and 52.7%, respectively while the lowest yield were respectively 30.50, 16.80 and 19.50%. Lignocellulosic medical waste can be a viable source of biofuels and raw materials respectively for sustainable development and for chemical industries.