Banca de DEFESA: ESPEDITO JAMERSON TAVARES PEREIRA LUNA

PYROLYTIC OVEN AND THE PRODUCTION OF EXTRACTS OF AGRONOMIC INTEREST

Pyrolysis. Poultry litter. Thermal decomposition. Biochar. Bio-oil.

Poultry litter (PL) is a waste produced in broilers confinement and producion systems. PL has high concentrations of ammonia, originating from the excretion of uric acid, which is the end product of nitrogen metabolism in broilers. This research aimed to develop a pyrolysis oven for the processing (or treatment) of PL in order to obtain fluids and pyrolyzed solids as a nutritional source for vegetable production. PL samples were subjected to pyrolytic treatment (250 oC for 1h). The chemical thermogravimetric (TGA) and Chromatographic (LC x LC: Comprehensive Twodimensional Liquid Chromatography) characteristics were studied for the aqueous liquid (liquid extract), For solid waste, mass spectrometry was used. For this study gravimetric yield was 38.4% rice husk poultry litter and 44,5% for poultry litter made wood shavings. It was noted that the concentrations of minerals and organic carbon were preserved enteh solid residue (biochar). Int relations to the experiment with corn 1051, evaluatinf biochar and liquid extrat, it was observed the bochar presented 13.96% higrher productivity efficiency compared to untreated poultry litter, and 3.83% higher than conventional fertilization with NPK and urea. These results indicat that biochar and liquid extract froam poultry litter pyrolyzed at 250 oC por one hour can be an efficient bioactive component for the growth and development of plabnts of economic interest, such as corn. Its treatment can represent a way of minimizing the impacts caused by ammonia, both on the broilers and on the rural worked directly involved, and cam even used as poultrylitter, with the possibility of better retentions of excretions and use of those residues.