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All Journal Acta Chimica Asiana Jurnal Redoks : Jurnal Pendidikan Kimia dan Ilmu Kimia
Sholehah, Faridatun
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Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Materials Science & Nanotechnology

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EFEKTIVITAS PENGUATAN LITERASI UNTUK MENDUKUNG PROFIL PELAJAR PANCASILA MELALUI PEMBELAJARAN LANGSUNG PADA MATERI ZAT ADITIF SISWA KELAS VIII SMP NEGERI 5 KOTA BIMA Sari, Liran; Annafi, Nurfidianty; Mutmainnah, Putri Ayu; Sholehah, Faridatun
JURNAL REDOKS : JURNAL PENDIDIKAN KIMIA DAN ILMU KIMIA Vol 8 No 1 (2025): Jurnal Redoks : Jurnal Pendidikan Kimia dan Ilmu Kimia
Publisher : Program Studi Pendidikan Kimia STKIP Bima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33627/re.v8i1.3052

Abstract

Penelitian ini bertujuan untuk mengetahui efektifitas penguatan literasi dalam mendukung Profil Pelajar Pancasila melalui pembelajaran langsung pada materi zat aditif di kelas VIII SMP Negeri 5 Kota Bima. Penelitian menggunakan desain eksperimen dengan metode pre-experimental one group posttest design, yang dilakukan pada 20 siswa tanpa kelas kontrol. Instrumen penelitian terdiri dari angket respon siswa, soal tes, dan observasi. Hasil penelitian menunjukkan bahwa 85% siswa mengalami peningkatan pemahaman materi zat aditif setelah penguatan literasi. Hal ini berkontribusi pada perkembangan keterampilan berpikir kritis dan mandiri siswa, yang merupakan aspek penting dalam Profil Pelajar Pancasila. Data dianalisis menggunakan Microsoft Excel.
Physically activated corn cob carbon for congo red and methanil yellow removal Sholehah, Faridatun; Adawiyah, Rabiatul; Bahrun, Bahrun
Acta Chimica Asiana Vol. 8 No. 2 (2025)
Publisher : The Indonesian Chemical Society, Chapter Nusa Tenggara and The University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/aca.v8i2.272

Abstract

The conversion of agricultural residues into sustainable adsorbents provides an environmentally responsible pathway for advanced wastewater treatment. In this work, physically activated carbon was synthesized from corncob, an abundant and underutilized agricultural byproduct, through carbon dioxide activation at elevated temperatures. Comprehensive characterization using BET surface area analysis, SEM-EDX, and FTIR confirmed the formation of a highly porous structure with abundant surface functional groups, favourable for dye adsorption. The adsorbent exhibited excellent performance in removing Congo Red (CR) and Metanil Yellow (MY), achieving maximum adsorption capacities of 59.88 mg/g and 30.47 mg/g, respectively. The Langmuir isotherm provides a good description of the equilibrium data, while the kinetic results follow the pseudo-second-order model, indicating that monolayer chemisorption is the dominant mechanism. These findings underscore the potential of corncob-derived activated carbon as a cost-effective, renewable, and high-performance material for sustainable wastewater remediation
Co-Authors Bahrun Bahrun Mutmainnah, Putri Ayu Nurfidianty Annafi, Nurfidianty Rabiatul Adawiyah Sari, Liran