Biyobozunur kentsel atıklardan değerli ürünlerin eldesi için bir termal teknoloji olarak pirolizin değerlendirilmesi

This research aimed to assess the utilization of municipal biodegradable and local biomass wastes through pyrolysis, focusing on waste quality and water content. In order to minimize the standard deviation due to heterogeneity, dry dog/cat food, whose detailed contents were analyzed, was used to identify the ideal conditions for pyrolysis of biodegradable waste. Primary devolatilization after water release occurred between 200-500°C and exothermic combustion at about 280°C. Preliminary experiments showed decreasing biochar yield and elevated biochar surface area (up to 213.11 m2/g) with higher final temperatures. FT-IR confirmed functional groups removal and carbondioxide, methane, and hydrogen generation during char production. The experiments conducted at 700°C, 10°C/min heating rate, and 40 minutes of retention time yielded with optimal results regarding the final products of the pyrolysis process. Any significant impact of initial water content (25, 40 and 55%) of wastes or their particle size (5-10, 10-15, 15-20 mm) was not observed. Co-pyrolysis of biodegradable municipal waste with waste biomasses enhanced biochar surface area (170.18 m2/g) and the amount of liquid product (34.6%), rich in n-alkanes. Regression analysis verified that increasing final temperatures results with higher BET surface areas in biochars (r:0.490, p≤0.01). Waste humidity had no impact on biochar quality, but enhanced liquid product formation. Principal Component Analysis revealed that waste characteristics (28.95%) and operating conditions (26.68%) were the major factors on biochar quality. Pyrolysis technique can be preferred for the management of biodegradable and biomass wastes against global climate change and the biochar obtained can be used for carbon sequestration.