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All Journal Darmabakti: Jurnal Pengabdian kepada Masyarakat Sorption Studies
Alivia, Latisa Stefi
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Health Professions Materials Science & Nanotechnology Mathematics Public Health

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Kolaborasi kampus–industri dalam program magang: Implikasi bagi pengembangan PT Dahana Lestari, Aura Puja; Haidar, Muhammad Hilman; Gunaryo, Gunaryo; Apriliyanto, Yusuf Bramastya; Alivia, Latisa Stefi; Anggara, Adrian Rezki
Darmabakti: Jurnal Pengabdian kepada Masyarakat Vol. 2 No. 1 (2025): November
Publisher : CV Rezki Media

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56003/darmabakti.v2i1.659

Abstract

Program magang merupakan salah satu bentuk implementasi pembelajaran berbasis pengalaman (experiential learning) yang dirancang untuk menjembatani kesenjangan antara teori yang diperoleh di bangku perkuliahan dengan praktik nyata di dunia kerja. Penelitian ini bertujuan untuk mengevaluasi kinerja mahasiswa magang dalam pelaksanaan program Magang Generasi Bertalenta (MAGENTA) BUMN di PT Dahana. Evaluasi ini dilakukan guna memperoleh gambaran menyeluruh mengenai kompetensi, kedisiplinan, tanggung jawab, serta kemampuan adaptasi mahasiswa selama kegiatan magang berlangsung. Metode penelitian yang digunakan adalah metode deskriptif kualitatif dengan pendekatan survei. Instrumen pengumpulan data berupa kuesioner tertutup yang disebarkan kepada pembimbing lapangan selaku penilai kinerja mahasiswa. Data yang diperoleh dianalisis untuk menilai efektivitas program magang dalam meningkatkan kemampuan profesional mahasiswa serta kontribusinya terhadap lingkungan kerja. Hasil penelitian menunjukkan bahwa secara umum mahasiswa magang memiliki kinerja yang baik, ditandai dengan tingkat kedisiplinan yang tinggi, rasa tanggung jawab terhadap tugas, dan kemampuan adaptasi yang cepat terhadap budaya kerja perusahaan. Program MAGENTA di PT Dahana terbukti memberikan dampak positif terhadap pengembangan kompetensi mahasiswa serta memperkuat hubungan kemitraan antara perguruan tinggi dan dunia industri.
Effect of Different Temperatures in Magnetite Synthesis on Methylene Blue Adsorption Ananda, Dea Dwi; Napoleon, Sultan; Tarigan, Thessa Octavia Joyetta; Yulita, Tiara Rizki; Alivia, Latisa Stefi; Kusuma, Bagas; Fajri, M. Rizki; Putri, Kayla Sophia; Artdero, Nayantaka Virsa; Nurwanto; Hartono, Rudi; Rahmat Basuki
Sorption Studies Vol. 1 No. 2 (2025): Sorption Studies, December 2025
Publisher : Indonesian Scholar Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55749/ss.v1i2.84

Abstract

This study aims to synthesize magnetite (Fe₃O₄) particles using the coprecipitation method, with variations in temperature (70°C and 90°C) and reaction system (open and closed) to evaluate their effects on product quality. Characterization was conducted using FTIR, XRD, and organoleptic observation to confirm the formation of Fe₃O₄. Additional tests included magnetic attraction measurements through mass response and adsorption capacity (Q) analysis using methylene blue. FTIR analysis showed absorption bands at 3417.00 cm⁻¹, 1627 cm⁻¹, 1404 cm⁻¹, and 578 cm⁻¹, indicating the presence of O–H, C=O, and Fe–O functional groups. XRD patterns revealed diffraction peaks at 2θ values of 30.27°, 35.23°, 43.22°, 53.71°, 57.43°, and 62.11°, confirming the spinel crystal structure of Fe₃O₄. The sample synthesized at 90°C under closed conditions exhibited a darker black color and higher mass yield, suggesting improved crystallinity and phase purity. The closed system also showed higher adsorption capacities of 0.0008 mmol·g⁻¹ at 70°C and 0.0018 mmol·g⁻¹ at 90°C, along with stronger magnetic response. The open system produced a black precipitate with lower yield and weaker magnetic response, suggesting oxidation of Fe²⁺ to Fe³⁺ due to direct contact with oxygen, leading to the formation of compounds such as hematite or maghemite with lower magnetic properties. These results confirm that higher reaction temperatures and closed conditions optimally enhance the quality and stability of magnetite.
Co-Authors Ananda, Dea Dwi Anggara, Adrian Rezki Artdero, Nayantaka Virsa Fajri, M. Rizki Gunaryo, Gunaryo Haidar, Muhammad Hilman Hartono, Rudi Kusuma, Bagas Lestari, Aura Puja Napoleon, Sultan Nurwanto Putri, Kayla Sophia Rahmat Basuki Tarigan, Thessa Octavia Joyetta Yulita, Tiara Rizki Yusuf Bramastya Apriliyanto