Thermal Decomposition Kinetic Study of Non-Recyclable Paper and Plastic Waste by Thermogravimetric Analysis
نویسندگان
چکیده
The global net emissions of the Kyoto Protocol greenhouse gases (GHG), such as carbon dioxide (CO2), fluorinated gases, methane (CH4), and nitrous oxide (N2O), remain substantially high, despite concerted efforts to reduce them. Thermal treatment solid waste contributes at least 2.8–4% GHG in part due increased generation municipal (MSW) inefficient processes, incineration landfill. gasification pyrolysis, are valuable ways convert materials, wastes into syngas, liquids, chars, for power generation, fuels, or bioremediation soils. Subcoal™ is a commercial product based on paper plastics from source segregated that not readily recyclable would otherwise potentially find its way landfills. This looks kinetic parameters associated with this gasification, combustion conditions consideration fuel reductant blast furnace ironmaking process. Thermogravimetric Analysis (TGA) Nitrogen (N2), CO2, air, was used measure compare reaction kinetics. activation energy (Ea) pre-exponential factor A were measured different heating rates using non-isothermal Ozawa Flynn Wall (OFW) Kissinger-Akahira-Sonuse (KAS) model-free techniques. TGA curves showed thermal degradation comprises three main processes: dehydration, devolatilization, char ash formation. In addition, rate drifts devolatilization temperature higher value. Likewise, derivative thermogravimetry (DTG) results stated Tm increased. Substantial variance Ea noted between four stages decomposition both methods. reached 200.2 ± 33.6 kJ/mol by OFW 179.0 31.9 KAS. Pyrolysis registered values 161.7 24.7 142.6 23.5 Combustion returned lowest (76.74 15.4 kJ/mol) KAS (71.0 4.4 kJ/mol). low indicate shorter time compared pyrolysis. Generally, kinetics analysis methods show good consistency evaluating Arrhenius constants.
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ژورنال
عنوان ژورنال: ChemEngineering
سال: 2021
ISSN: ['2305-7084']
DOI: https://doi.org/10.3390/chemengineering5030054