July 22, 2025 Report Open Access

Mequanintie Gebeyehu

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        <foaf:name>Mequanintie Gebeyehu</foaf:name>
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            <foaf:name>Mekdela Amba University</foaf:name>
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    <dct:title>Synthesis and Characterization of Liquid Fuels from Waste Plastic Polymers via Catalytic Pyrolysis in Case of Legambo Wereda, South Wollo, Ethiopia</dct:title>
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        <foaf:name>Zenodo</foaf:name>
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    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#gYear">2025</dct:issued>
    <dcat:keyword>Catalytic Pyrolysis, FTIR, GC/MS, Silica-Alumina, Waste Plastics</dcat:keyword>
    <dct:issued rdf:datatype="http://www.w3.org/2001/XMLSchema#date">2025-07-22</dct:issued>
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    <dct:description>&lt;p&gt;The aim of this study was to convert HDPE and PET waste plastics into valuable hydrocarbon&lt;br&gt; liquid fuel via catalytic pyrolysis technique using silica-alumina as a low-cost catalyst&lt;br&gt; synthesized from rice husk and aluminum oxide. HDPE and PET waste plastics were&lt;br&gt; catalytically degraded in a muffle furnace at a temperature of up to 450 &amp;deg;C using silica-alumina&lt;br&gt; catalyst in catalytic pyrolysis of the same feedstock for optimum catalyst-to-plastic ratio of 1:3&lt;br&gt; according to literatures. Optimum yield was obtained at this catalyst-to-plastic ratio with a yield&lt;br&gt; of 50.90, 6.10%, 43.00 wt% for liquid, solid and gaseous products, respectively for HDPE waste&lt;br&gt; plastics whereas for PET only solid residue was obtained. The catalyst was characterized by&lt;br&gt; XRD, FTIR and GC-MS. The ultimate and proximate analysis of the HDPE feed carried out&lt;br&gt; gave combustible moisture content of 5.70 %, fixed carbon of 11.56%, Ash content of 10.05%,&lt;br&gt; Volatile matter content of 72.69%, fixed carbon content of 11.56%, calorifc value of&lt;br&gt; 46.70 MJ/kg and elemental composition with carbon (83.65%), hydrogen (12.72%), oxygen&lt;br&gt; (1.50%), sulphur (0.70%), chlorine (2.25%), and nitrogen (1.37%). The properties determined&lt;br&gt; were density, viscosity, flash point, fire point, pour point, and calorific value for HDPE feed&lt;br&gt; stock. Whereas, the ultimate and proximate analysis of PET feed gave moisture content of&lt;br&gt; 4.74%, ash content of 11.67%, volatile matter content of 73.53% and fixed carbon content of&lt;br&gt; 9.06%. The results suggest that catalytic pyrolysis produced liquid products for HDPE feed stock&lt;br&gt; only, whose properties are comparable to conventional fuels (gasoline and diesel oil).&lt;/p&gt;</dct:description>
    <dct:description>Funded by Mekdela Amba University</dct:description>
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