https://mjes.um.edu.my/index.php/IJRER <p>IJRER (<strong>ISSN 2289-1846</strong>) accepts original research papers or any other original contribution in the form of reviews and report on new concepts. It promotes innovation, papers of a tutorial nature and a general exchange of news, views and new books on the above subjects.&nbsp;The scope of the journal encompasses the following: Photovoltaic Technology Conversion, Solar Thermal Application, Biomass Conversion, Wind Energy Technology, Materials Science Technology, Solar and Low Energy Architecture, Energy Conservation in Buildings, Climatology , Socio-economic, Energy Management, Solar Cells, Bio and hydrogen energy.&nbsp;</p> en-US hasan@um.edu.my (Md. Hasanuzzaman) hadafi@um.edu.my (Mohd Shukri Hadafi) Mon, 23 Sep 2024 09:43:13 +0800 OJS 3.3.0.6 http://blogs.law.harvard.edu/tech/rss 60 https://mjes.um.edu.my/index.php/IJRER/article/view/52945 <p>The pyrolysis characteristics of High-Density Polyethylene (HDPE), Low-Density Polyethylene (LDPE), Styrofoam (STF), and their blends were investigated to compare the process of the pure components with those of the blends. Thermogravimetric analysis (TGA) was employed to monitor the mass loss of the plastic samples during heating, providing critical insights into their thermal degradation behaviour. The pyrolysis kinetics were further examined using a multi-step integral method to determine the reactivities and activation energies of the materials. The results revealed that the pyrolysis processes of individual plastics could be characterized by a single reaction in the main decomposition zone. In contrast, the pyrolysis of binary (LDPE-HDPE, LDPE-STF, HDPE-STF) and tertiary blends (LDPE-HDPE-STF) exhibited two and three distinct reactions, respectively. Consequently, the decomposition of pure plastics follows a one-step mechanism, while the blends undergo multi-step mechanisms. Plastic pyrolysis is a crucial method for converting waste plastics into fuel-like substances. Hence, the term "fuels" highlights the potential of the resulting pyrolyzed products to serve as alternative energy sources. The results also showed variations in peak temperatures and decomposition intensities across different blends, significantly influencing the individual plastic materials' reactivities and activation energies. The activation energies for LDPE, HDPE, and STF ranged from 126.22 to 134.52 kJ/mol, while those for the blends were between 129.12 and 299.99 kJ/mol. Determining reactivities and activation energies is essential for understanding the efficiency and energy requirements of the pyrolysis process, helping optimize conditions for maximum fuel yield.</p> Rahimat Oyiza Yakubu, Abdulazeez A. Abdulazeez, Hammed Yusuf, Abdulhanan Bello, J.S. Esimi, Tawakalitu AbdulRasheed Copyright (c) 2024 International Journal of Renewable Energy Resources https://mjes.um.edu.my/index.php/IJRER/article/view/52945 Mon, 23 Sep 2024 00:00:00 +0800