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Yeanchon H. Dulanlebit
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Gedung Jurusan Pendidikan MIPA FKIP Lt. 2 Program Studi Pendidikan Kimia Jl. Ir. M. Putuhena, Kampus Universitas Pattimura Poka-Ambon, Maluku, Indonesia
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Molluca Journal of Chemistry Education (MJoCE)
Published by Universitas Pattimura
ISSN : 27228266     EISSN : 27228258     DOI : https://doi.org/10.30598/MJoCEvol10iss1pp1-7
Core Subject : Science, Education,
Chemistry Education
Molluca Journal of Chemistry Education (MJoCE) merupakan jurnal ilmiah berkala dengan ciri khas/identitas Kimia dari Maluku, seperti: minyak atsiri, produk dan pangan laut, pendidikan kimia yang berkarakter kelautan dan kepulauan, dll. Jurnal ini berisi tulisan ilmiah tentang bidang kimia yang meliputi hasil penelitian kimia, kimia teori, pendidikan kimia dan kimia terapan
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 2 Documents
 1 
Search results for , issue "Vol 15 No 2 (2025): MJoCE" : 2 Documents clear
SYNTHESIS OF ACTIVATED CARBON FROM SORGUM STEM WASTE (Sorghum bicolor (L.) Moench) AS RHODAMIN B ADSORBENT WITH VARIATIONS OF NaOH ACTIVATOR CONCENTRATION Batu, Matius Stefanus; Teti, Roswita; Kolo, Maria Magdalena
Molluca Journal of Chemistry Education (MJoCE) Vol 15 No 2 (2025): MJoCE
Publisher : Program Studi Pendidikan Kimia, FKIP, Universitas Pattimura (Chemistry Education Study Program, Faculty of Teacher Training and Educational Sciences, Pattimura University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol15iss2pp59-67

Abstract

Rhodamine B is a synthetic dye commonly used, especially in the textile industry. Excessive entry of Rhodamine B into the environment can alter the pH of water, which can disturb microorganisms and animals living in aquatic environments. One way to address the pollution of Rhodamine B is by using activated carbon from sorghum stalk waste. Activated carbon is carbon that has been processed through activation to have pores with a very large surface area, thereby enhancing its adsorption capacity. The aim of this study is to determine the characteristics of activated carbon from sorghum stalk waste and to determine the optimum NaOH concentration in the synthesis of activated carbon from sorghum stalk waste as an adsorbent for Rhodamine B dye. The stages in this study include the preparation of sorghum stalk waste samples, carbonization, and activation of the carbon from sorghum stalk waste using NaOH activator with concentration variations of 2, 3, 4, 5, and 6% for 24 hours. The adsorption process was carried out using the activated carbon from sorghum stalk waste to adsorb Rhodamine B dye. The results of the study showed that the characteristics of the activated carbon from sorghum stalk waste had a moisture content of 4-7.3%, ash content of 2.3-7.6%, and an iodine adsorption capacity of 2,410.67-3,427.11 mg/g. The results of the characterization of activated carbon from sorghum stalk waste overall met the Indonesian National Standard (SNI). The optimum NaOH activator concentration for adsorbing Rhodamine B dye was obtained at a concentration of 6%, with an adsorption efficiency of 88.94%.
PROFILING CHEMISTRY STUDENTS’ SYSTEMS THINKING SKILLS IN RESPONDING TO 21ST-CENTURY CHALLENGES Amida, Nadia; Unwakoly, Semuel
Molluca Journal of Chemistry Education (MJoCE) Vol 15 No 2 (2025): MJoCE
Publisher : Program Studi Pendidikan Kimia, FKIP, Universitas Pattimura (Chemistry Education Study Program, Faculty of Teacher Training and Educational Sciences, Pattimura University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/MJoCEvol15iss2pp68-73

Abstract

This study analyzes the profile of chemistry students’ systems thinking skills as a key competency for addressing the complex challenges of the 21st century. Systems thinking is essential for understanding the dynamic interrelationships among components within a system in an integrated and holistic manner. A descriptive quantitative approach was employed involving 108 chemistry education students from seven universities across Indonesia, consisting of 58 from rural areas and 50 from urban areas. Data were collected using the Dorani Systems Thinking Skills Test (D-STST), which was adapted to the higher education chemistry context. The results showed that students from urban areas achieved a higher mean score (M = 38.5) than those from rural areas (M = 34.91), indicating differences in systems thinking proficiency based on students’ residential backgrounds. These disparities are likely influenced by learning environments, access to educational resources, and academic experiences. The findings underscore the importance of implementing contextual, inquiry-based, and student-centered learning strategies to strengthen systems thinking skills and better prepare students for the demands of 21st-century education and global challenges.

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