The comparison of hazelnut shell co-pyrolysis with polyethylene oxide and previous ultra-high molecular weight polyethylene

Abstract

Abstract The importance of renewable energy sources has gained ultimate urgency due to environmental impacts in last decades. Thermochemical conversion process especially pyrolysis is preferred in waste disposal, and energy and chemical matter production. Flash pyrolysis of hazelnut shell (HS) and polyethylene oxide (PEO) blends were executed in hand-made reactors at various ratios at 485, 515, 550, 600 and 650 °C. Liquid, solid and gas products amounts were determined by gravimetry. The same process was carried out previously for HS and ultra-high molecular weight polyethylene (UHMWPE). Pyrolysis studies of these blends were compared in terms of product yields, interaction between components which are called synergistic effect and the influence of structure and hydrophilicity of polymers on pyrolysis of HS by some graphical tools. Existence of interactions between constituents is proved by comparing the result of experimental liquid, solid and gas products yields with rationally calculated yields at various ratios from pure HS and polymers from pyrolysis process. The directions of interactions of HS with PEO and UHMWPE are different within which HS and PEO produces high liquid and solid product yields, and HS and UHMWPE yields high gas product with respect to each other. Simply, these findings present some clues about interaction mechanism ways without any instrumental techniques.