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All Journal Jurnal Tadris Kimiya PENDIPA Journal of Science Education
Fannyda, Raidatul
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Chemistry Education Mathematics

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Identifikasi Senyawa Hasil Pirolisis Sampah Plastik Polietilen (PET) dan Polietilen berlapis logam (Metallized PET foil) Fannyda, Raidatul; Nursaadah, Euis; Ruyani, Aceng
PendIPA Journal of Science Education Vol 8 No 2 (2024): June
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.2.261-267

Abstract

Indonesia is the second largest contributor of plastic waste in the world with an unmanageable capacity of 3.2 million tonnes each year and 1.29 million tonnes of plastic waste ending up in the ocean. Plastic waste accounted for 16% of the world's marine plastic pollution, which directly contributed greenhouse gas emissions and climate change. Pyrolysis was an effective solution to overcome the processing of plastic waste which produces energy conversion. Pyrolysis is the process of breaking down long chain polymer molecules into smaller molecules through thermal cracking in the absence of oxygen at temperatures above 400°C. Pyrolysis does not release pollutants in the form of particles and CO2 into the atmosphere so it practically does not disturb the environment. This research method was a pyrolysis experiment on Polyethylene terephthalate (PET) plastic waste from mineral water packaging and metal-coated PET (metallized PET foil) from milk and snack packaging. The pyrolysis product was liquid oil with two different types of colors whose compounds were identified using gas chromatography – mass spectrometry (GC-MS). The number of compound components from PET plastic waste pyrolysis products was 58 components with the largest compound component areas being 5-methyl-1-heptene and 1-tridecanol. Meanwhile, the number of compound components from the pyrolysis product of metal-coated PET plastic waste (metallized PET foil) was 56 compound components with the largest compound component areas being 3-methyl-5-undecene and 1-tridecanol.
Integrating Plastic Waste Pyrolysis Technology into STEM Education to Improve Students' Environmental Knowledge and Attitude Nursaadah, Euis; Fannyda, Raidatul; Shabrina, Annida Nurul; Ruyani, Aceng
Jurnal Tadris Kimiya Vol 10 No 1 (2025)
Publisher : Department of Chemistry Education, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jtk.v10i1.40753

Abstract

The growing concern over plastic waste pollution and its harmful byproducts, such as CO, CO₂, NOₓ, and SOₓ gases from incineration, necessitates alternative and environmentally responsible waste management strategies. At MAN Insan Cendekia Bengkulu Tengah, a boarding school that manages its own waste, the integration of pyrolysis as a cleaner method for plastic waste treatment offers both practical and educational value. This study aimed to contextualize plastic waste pyrolysis within STEM-based learning to enhance students’ environmental knowledge and attitudes through interdisciplinary instruction. A quasi-experimental two-group pre-test–post-test design was employed, involving 32 students divided equally into control and experimental groups. The control group received STEM instruction using a module and video on plastic pyrolysis, while the experimental group engaged in a more immersive approach involving the same materials supplemented with hands-on pyrolysis activities. Results indicated that the experimental group outperformed the control group, with an environmental knowledge normalized gain (N-gain) score of 0.67 (medium), compared to 0.47 (low) in the control group. Additionally, the experimental group achieved higher environmental attitude scores (85) than the control group (76). These findings demonstrate that STEM education incorporating contextual, multimodal, and practical components can significantly enhance students’ conceptual understanding and engagement with environmental issues. The study contributes to the growing body of evidence supporting experiential STEM education as an effective approach for fostering environmental awareness and action in secondary education settings.
Co-Authors ACENG RUYANI Nursaadah, Euis Shabrina, Annida Nurul