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All Journal Indonesian Journal of Educational Development (IJED) Journal of Mathematics Science and Computer Education
Mirah Surya Dewi, Ni Pt. Pande
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Education Mathematics Physics

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Green Remediation of Used Cooking Oil Using Sugarcane Bagasse: A Sustainable, Green Chemistry Approach Mirah Surya Dewi, Ni Pt. Pande; Khodizah, Ayu Tri
Journal of Mathematics Science and Computer Education Vol 4, No 2 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jmscedu.v4i2.14139

Abstract

Environmental pillars are the foundation of sustainable development, emphasizing waste management solutions like used cooking oil purification. This study assesses used cooking oil quality based on color, odor, water content, free fatty acids, and peroxide value after sugarcane bagasse adsorption over 1, 2, and 3 days. Using a one-group pretest-posttest design, the 3-day treatment yielded optimal results: peroxide value (5.603 meq/kg), water content (0.070%), and free fatty acids (0.13%) decreased significantly, with improved color and odor compared to the control. The study integrates green chemistry principles, including waste prevention, energy efficiency, renewable material use, chemical degradation design, and safer chemical applications. This minimizes hazardous material usage, energy consumption, and environmental impact. Spent bagasse can be transformed into valuable products like compost or biofuel, providing sustainable solutions for managing used cooking oil waste, while reducing pollution and greenhouse gas emissions. The research offers an effective strategy aligned with Indonesia's conservation goals and green chemistry principles. It encourages public participation in local waste management, potentially inspiring innovative approaches for handling other waste types, thereby strengthening sustainability efforts.
Transforming laboratory management learning with e-modules Mirah Surya Dewi, Ni Pt. Pande; Liska, Luh De; Parwati, Ni Putu Yuniarika
Indonesian Journal of Educational Development (IJED) Vol. 6 No. 1 (2025): May 2025
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM) Universitas PGRI Mahadewa Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59672/ijed.v6i1.4691

Abstract

Laboratories are crucial in chemistry education; however, in practice, many students still struggle to grasp the concept of laboratory management in an applied way, as reflected in their scores, which remain below the passing grade. This research aimed to develop e-modules based on case-based and project-based learning to improve understanding of laboratory management concepts. This study used a Research and Development (R&D) approach with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). Validation of e-modules was carried out by material and media experts, and tested on 24 FKIP ULM Chemistry Education students. Data collection instruments included validation questionnaires, student response questionnaires, as well as pretests and posttests, which were analysed using the Wilcoxon test. The results showed that the e-module was rated “very valid” from the aspects of content, presentation, language, and media. The Wilcoxon test resulted in a significance value of 0.000 (p < 0.05), indicating a significant increase in student concept understanding after the use of e-modules. Recommendations from this study are the wider use of case- and project-based e-modules in learning laboratory management, as well as continuous development to be more adaptive to the development of educational technology.
Co-Authors Khodizah, Ayu Tri Luh De Liska Ni Putu Yuniarika Parwati