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All Journal JIPI (Jurnal IPA dan Pembelajaran IPA)
Napitupulu*, Mery
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Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Physics

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Biochar from Kapuk Randu (Ceiba pentandra) Seeds for Adsorption of Remazol Blue Dye in Wastewater Napitupulu*, Mery; Walanda, Daud Karel; Nakazawa, Koyomi; Poba, Detris; Tiwow, Vanny M A; Nurmayanti, Yuli; Rahma, Sri
Jurnal IPA & Pembelajaran IPA Vol 9, No 3 (2025): SEPTEMBER 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v9i3.47600

Abstract

The use of synthetic dyes such as remazol by textile companies can harm the environment because they are toxic, long-lasting, and hard to break down. This study aims to find out how well biochar made from randu kapuk seeds can absorb colors in water by determining the best weight, contact time, and pH level. The study's findings indicate that the moisture content of biochar made from randu kapuk seeds at temperatures of 400C, 450C, and 500C is 5.7%, 5.1%, and 4.3%, respectively. The ash concentration at temperatures of 400, 450, and 500 was 7.7%, 6.8%, and 6.3%, respectively. The best amount of biochar tested was 100 mg, which could absorb 25 mg of remazol Blue, giving it an adsorption capacity of 1.65 mg/g. The best time for biochar made from kapuk seeds to absorb remazol Blue was 30 minutes, with an absorption ability of 1.59 mg/g. The optimal pH for the adsorption of remazol Blue was 4, with a capacity of 5.39 mg/g. The results showed that biochar made from kapuk seeds was excellent at soaking up substances and followed certain patterns that suggest it works through a single layer of chemical bonding. This study highlights how effective biochar made from kapuk seeds is as a safe and eco-friendly material for cleaning dye-polluted water, which helps promote sustainable water management in line with SDG 6: clean water and sanitation
Exploring Differentiated Learning Strategies to Respond to Differences in Students' Level of Understanding of Metal Inorganic Chemistry Course Napitupulu*, Mery; Walanda, Daud K; Griffiths, Zoe; Nurmayanti, Yuli; Poba, Detris
Jurnal IPA & Pembelajaran IPA Vol 9, No 1 (2025): MARCH 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v9i1.42452

Abstract

Differentiated learning refers to educational schemes and materials individually developed about the varied needs of each student to improve knowledge understanding as individuals, as well as participation involvement. The study applied differentiated learning in the metal inorganic chemistry class of chemistry education to address student understanding variability. These strategies and their effect on student performance were studied through observations, surveys, and interviews in a mixed-method design. The findings portrayed that the application of differentiated learning helps boost the student's performance in understanding the concepts inorganic chemistry of metals. Additionally, the students showed higher satisfactions and engagements when the instructor incorporated different teaching modes, materials (videos, presentation materials, and books), and practical use of examples. Group discussion and collaborative learning among the students helped them better understanding and retention of the knowledge of metal inorganic chemistry
Co-Authors Daud Karel Walanda Griffiths, Zoe Nakazawa, Koyomi Poba, Detris Rahma, Sri Tiwow, Vanny M A Yuli Nurmayanti