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PEMBUATAN KITOSAN DAN PEMANFAATANNYA SEBAGAI AGEN KOAGULASI-FLOKULASI Mulkan Hambali; Edo Wijaya; Afthar Reski
Jurnal Teknik Kimia Vol 23 No 2 (2017): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya

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Abstract

Telah dilakukan penelitian pembuatan kitosan dan pemanfaatannya sebagai agen koagulasi-flokulasi. Penelitian ini dilakukan dengan 3 perlakuan bahan baku ; tidak direbus, direbus dengan air dan direbus dengan air garam. Kitosan diperoleh melalui proses deasetilasi dengan waktu 60, 75, 90, 105 dan 120 menit. Derajat deasetilasi ditentukan dengan metode titrasi asam-basa, serta penurunan kekeruhan ditentukan dengan alat Turbidimeter. Hasil penelitian didapatkan bahwa derajat deasetilasi meningkat seiring dengan semakin lama waktu deasetilasi. Derajat deasetilasi tertinggi adalah 97,79% pada kondisi direbus air garam dan waktu deasetilasi 120 menit. Penurunan kekeruhan didapatkan nilai optimum pada waktu deasetilasi 75 menit untuk ketiga perlakuan, yakni perlakuan tidak direbus, direbus dengan air dan direbus dengan air garam. Penurunan turbiditas terbaik dari ketiga perlakuan didapatkan pada perlakuan tidak direbus. Penurunan kekeruhan yang didapatkan kondisi tidak direbus dan waktu 75 menit adalah 98,4 % dan TSS 2,3 mg/30ml.
Integration of the STEAM Approach in Learning Within the Merdeka Curriculum at the Elementary School Level: A Systematic Literature Review Nabylla Sapta Ramadhani; Edo Wijaya
STEAM Journal For Elementary School Education Vol. 2 No. 01 (2026): STEAM Journal for Elementary School Education
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/sjese.2.01.2026.2

Abstract

This study aims to examine the integration of the STEAM (Science, Technology, Engineering, Arts, and Mathematics) approach in primary school learning and to analyze its alignment with the principles of the Merdeka Curriculum. This research employed a Systematic Literature Review (SLR) method guided by the PRISMA 2020 framework to ensure a transparent and structured selection process. The literature search was conducted across multiple academic databases, including Google Scholar, Garuda, and Web of Science, focusing on publications from 2021 to 2025. From an initial pool of 999 articles, 15 studies met the inclusion criteria and were analyzed using qualitative synthesis. The findings indicate that STEAM integration in primary education follows a systematic pattern grounded in constructivist and student-centered learning principles and is primarily implemented through Project-Based Learning (PjBL), Problem-Based Learning (PBL), and inquiry-based learning models. These approaches enable interdisciplinary and contextual learning experiences. Empirically, the implementation of STEAM has been shown to significantly enhance students’ 21st century competencies, including critical thinking, creativity, communication, and collaboration, as well as improving science literacy and problem-solving abilities. Furthermore, the STEAM approach demonstrates strong alignment with the Merdeka Curriculum by promoting independent learning, differentiated instruction, and the development of the Pancasila Student Profile. However, several challenges remain, particularly in terms of limited technological infrastructure, time constraints, and teachers’ pedagogical readiness in implementing integrative learning. Identified best practices include the use of STEAM-based digital modules, collaborative learning strategies, and continuous professional development for teachers. In conclusion, the integration of STEAM within the Merdeka Curriculum presents a promising framework for enhancing the quality of primary education, although its effectiveness depends on sustained institutional support, teacher capacity building, and adequate technological resources.