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All Journal Jurnal Pendidikan IPA Indonesia JIPI (Jurnal IPA dan Pembelajaran IPA)
Rofiqul Umam
University of Tsukuba, Japan
Education

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Enhancing Green Food Intention and Creativity Through Problem-Based Learning Integrated with Scaffolded Nutrition among Pre-Service Science Teachers Annisa Nur Khasanah; Dadan Rosana; Insih Wilujeng; Arifin Septiyanto; Muhammad Nur Hudha; Rofiqul Umam
Jurnal Pendidikan IPA Indonesia Vol. 15 No. 2 (2026): June 2026
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v15i2.44935

Abstract

This study aims to determine the effect of the implementation of Problem-Based Learning through Scaffolded Nutrition (PBL-SN) on increasing green food intention and creativity in pre-service science teachers to support SDGs, the effect of the implementation of PBL-SN in developing creativity in the context of sustainable food consumption in pre-service science teachers, and whether there is a significant relationship between green food intention and creativity of pre-service science teachers after participating in PBL-SN based learning. The novelty of the research lies in integrating PBL with Scaffolded Nutrition as a specific instrument to simultaneously increase Creativity and Green Food Intention among pre-service science teachers, thereby supporting SDGs 2, 3, and 12. This study is a quantitative, quasi-experimental, posttest-only research design. The statistical tests used are t-tests and multiple linear regression. The results of this study show that the green food intention variable has an average EC (M = 3.47) and CC (M = 3.27), with t = -1.841 and Cohen's d = 0.516, indicating a moderate effect. The creativity variable shows that the average EC (M = 87.52) is higher than the average CC (M = 82.76), with t = -4.078 and Cohen's d = 1.141; the effect size is relatively large, indicating that the treatment given to the EC has a strong impact on increasing the creativity of pre-service science teachers. There is a weak positive correlation between creativity and green food intention, suggesting no strong relationship between the two variables in the intervention group.
Preparation and Performance of Seaweed-Based Polyurethane Membranes Modified with Palm Kernel Shell Activated Carbon for Ammonia Adsorption Masthura Masthura; Saiful Saiful; Mutia Farida; Salfauqi Nurman; Rofiqul Umam
JIPI (Jurnal IPA & Pembelajaran IPA) Vol. 10 No. 1: MARCH 2026
Publisher : Universitas Syiah Kuala, in collaboration with the Perkumpulan Pendidik IPA Indonesia (PPII), (MoU)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v10i1.252

Abstract

Polyurethane membranes derived from renewable resources are increasingly being explored for applications in water treatment, particularly for ammonia adsorption. This study focuses on the development of a seaweed-based polyurethane membrane, synthesized from Gracilaria verrucosa biomass, and modified with palm kernel shell-derived activated carbon (RlgPU5/AC). The membranes were characterized for their mechanical, structural, and thermal properties using techniques such as FTIR, SEM, TGA, and tensile testing. Results showed that the incorporation of activated carbon significantly improved the tensile strength (from 17.65 MPa to 19.94 MPa) and elongation (from 34.9% to 74.2%), while also enhancing the swelling degree and porosity of the membrane. Adsorption experiments revealed that the RlgPU5/AC membrane demonstrated optimal ammonia removal at pH 8, achieving a maximum adsorption capacity of 0.409 mg/g. The adsorption process was governed by the Langmuir isotherm and pseudo-first-order kinetics. Regeneration experiments confirmed that the membrane could be reused with a 69.6% regeneration efficiency using 3 N HCl solution, demonstrating its potential as an effective and sustainable material for ammonia removal in wastewater treatment
Co-Authors Annisa Nur Khasanah Arifin Septiyanto Dadan Rosana Insih Wilujeng Masthura Masthura Muhammad Nur Hudha Mutia Farida Saiful Saiful Salfauqi Nurman