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All Journal Journal of Degraded and Mining Lands Management Jurnal Penelitian dan Karya Ilmiah Lembaga Penelitian Universitas Trisakti
Yomaki, Caroline Claudia
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STUDI ISOTERMAL ADSORPSI KARBON AKTIF BATUBARA DENGAN AKTIVASI ASAM POSPAT TERHADAP LOGAM Fe dan Mn DALAM AIR ASAM TAMBANG Yulianti, Ririn; Suliestyah, Suliestyah; Tuheteru, Edy Jamal; Palit, Christin; Yomaki, Caroline Claudia
JURNAL PENELITIAN DAN KARYA ILMIAH LEMBAGA PENELITIAN UNIVERSITAS TRISAKTI Volume 9, Nomor 1, Januari 2024
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/pdk.v9i1.18804

Abstract

Air Asam Tambang (AAT) merupakan limbah cair dampak aktifitas penambangan yang mengandung logam Fe dan Mn yang dapat menyebabkan pencemaran lingkungan. Penelitian ini bertujuan untuk melihat potensi karbon aktif berbahan batubara sebagai adsorben dalam pengolahan AAT. Karbon aktif dibuat dari batubara dengan mengaktifkannya dengan H3PO4 dengan perbandingan berat 40% dan karbonisasi pada suhu 800°C selama 120 menit. Hasil karaketisasi menunjukkan Luas permukaan BET, volume pori total, dan bilangan iodin masing-masing 296,379 m2/g, 0,1562 cc/g, dan 1206 mg/g. Banyaknya pori, rekahan, saluran, dan gugus aktif pada permukaan dibuktikan oleh analisis FT-IR dan SEM. Treatment karbon aktif untuk mereduksi logam Fe dan Mn menggunakan 2 gram karbon aktif yang dicampurkan ke dalam 200 ml AAT artificial dengan 4 variasi konsentrasi awal logam Fe dan Mn yang berbeda. Didapatkan hasil pada perlakuan yang paling optimal untuk konsentrasi awal logam Fe sebesar 28,2541 mg/L dan logam Mn 15,2241 mg/L setelah dilakukan treatment karbon aktif mengalami penurunan konsentrasi logam Fe menjadi 0,1473 mg/L (tereduksi 99,47%) dan logam Mn 0,0103 mg/L (tereduksi 99,93%). Studi adsorpsi isothermal menunjukkan bahwa adsorpsi logam Fe mengikuti model isothermal Langmuir dengan nilai R2 sebesar 99% dan kapasitas adsorpsi terbesar 2,81 mg/g , sedangkan adsorpsi logam Mn mengikuti model Freundlich dengan nilai R2 sebesar 92% dan kapasitas adsorpsi terbesar 1,52 mg/g.
Production of activated carbon from coal with H3PO4 activation for adsorption of Fe(II) and Mn(II) in acid mine drainage Suliestyah, Suliestyah; Tuheteru, Edy Jamal; Yulianti, Ririn; Palit, Christin; Yomaki, Caroline Claudia; Ahmad, Shahrul Nizam
Journal of Degraded and Mining Lands Management Vol. 11 No. 3 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.113.5755

Abstract

Acid Mine Drainage (AMD) contains Fe(II) and Mn(II) metals, which can cause environmental pollution. This research aimed to investigate the potency of activated carbon made from coal as an adsorbent in AMD treatment. The carbon was made of coal and activated with H3PO4 in a weight ratio of 40%, 800 °C for 120 minutes while supplying 1.5 L/min of nitrogen during the carbonization process. The result shows that BET surface area, total pore volume, and iodine number were 296.4 m2/g, 0.156 cc/g, and 1205 mg/g, respectively. The surface contained many fractures, channels, and big holes, as evidenced by the FT-IR and SEM investigations, and it also had acidic surface functional groups. The optimum contact time adsorption for AMD treatment was 30 minutes, and the first concentration of Fe(II) and Mn(II) metals affected the adsorption. The optimum removal of Fe(II) in AMD treatment was 95.27% at an initial concentration of 3.51 ppm, while the optimum removal of Mn(II) was 99.82% at an initial concentration of 5.71 ppm. This activated carbon has a considerable potency to be used as the adsorbent in AMD treatment to reduce Fe(II) and Mn(II) levels.
Co-Authors Ahmad, Shahrul Nizam Palit, Christin Suliestyah, Suliestyah Tuheteru, Edy Jamal Yulianti, Ririn