Abstract
This study aims to address two important problems vital to agriculture: disposal of agricultural plastics and production of drop-in fuels from biomass via co-pyrolysis of both feedstocks. Mixtures of biomass (switchgrass, cellulose, xylan, and lignin) and plastic (polyethylene terephthalate (PET), polypropylene (PP), high density polyethylene (HDPE), low density polyethylene (LDPE), and polystyrene (PS)) were subjected to catalytic fast pyrolysis (CFP) at 650 °C in the presence of H-ZSM5. A micro-pyrolyzer coupled with GC/MS (py-GC/MS) was utilized to evaluate desired mixes and product distribution. Yields of the aromatic compounds typically observed as catalytic pyrolysis products including toluene, ethylbenzene, p-xylene, o-xylene, naphthalene, and 2-methylnaphthalene and their sum were tracked. The carbon yield of products from CFP of mixtures of biomass and plastic were compared with that of biomass alone, plastic alone, and the calculated arithmetic sum of yield values expected if there was no chemic...
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