Browsing by Author "Caglar, A, Aydinli, B"

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Isothermal co-pyrolysis of hazelnut shell and ultra-high molecular weight polyethylene: The effect of temperature and composition on the amount of pyrolysis products
(2009-01-01) Caglar A., Aydinli B.; Caglar, A, Aydinli, B
Solid wastes compromise biomass and plastics in terms of energy recuperation. Pyrolysis is the promising process in thermochemical conversions. In this study, isothermal co-pyrolysis of hazelnut shell and ultra-high molecular weight polyethylene (UHMWPE) mixtures was executed in hand made pyrolysis reactor. The effect of temperature and composition on liquid, solid and gas yields was clarified with descriptive charts. It can be definitely stated that there are interactions between components which are called synergistic effects. Temperature change and ratio of UHMWPE do not alter solid product yield significantly. Co-existence of hazelnut shell and UHMWPE renders gas products in expense of liquid at all temperature and composition conditions. Liquid products were collected separately as heavy and light liquid. Liquid fuel is preferred to gas and solid ones due to commercial reasons. Combustible heavy liquid increases synergistically with increasing UHMWPE ratio. Here, synergistically means it is higher than mathematical calculation. It was found that just at 515 °C and 0.5:1.5 (hazelnut shell/UHMWPE) composition total liquid product is above the calculated values. Additionally, 1.0:1.0 composition again at the same temperature produces highest heavy liquid yield. © 2009 Elsevier B.V. All rights reserved.
The pyrolysis of industrial alliaceous plant wastes: Illustration of process and characterization of products
(2018-11-01) Caglar A., Aydinli B.; Caglar, A, Aydinli, B
Biomass is one of the renewable energy and material sources. Agricultural biomass wastes are in top list in terms of quantity and uniformity. The stalks, leafs, and peels of them have taken considerable attention for various purposes. The biomass and wastes in recycling of matter and recuperation of chemicals with thermochemical conversion techniques are an efficient way in environmental perspective. The alliaceous plant reaches huge amount and its peels take attention in terms of difficulty of recycling with potential valuable compounds like its pulp. Here the pyrolysis of this garlic peel wastes was accomplished to obtain various valuable solid and liquid products that were analyzed with miscellaneous methods (thermogravimetric analysis/differential thermal analysis, gas chromatography/mass spectrometry, and scanning electron microscope). Three basic zones were appeared in thermal analysis for pyrolysis process. The valorization of these wastes to obtain precious chemicals and combustible compounds equivalent to petroleum products was illustrated by this way. Also carbonaceous compounds have been sequestered in solid and liquid forms by this way. The main fuel additives, methanol was obtained in remarkable amount (22.5%) from the liquid products. Also, porous material was produced from the solid products.