Characterization of Activated Carbon from Sorghum Bagasse Using Double Activation (Chemical Activation and Physical Activation) for Methylene Blue Adsorption
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This research aims to evaluate the adsorption performance of activated carbon derived from sorghum bagasse through a two-step activation process involving both chemical and physical activation. The sorghum bagasse precursor was first chemically activated using potassium carbonate (K?CO?) as the activating agent, followed by physical activation at 800 °C under an inert atmosphere. The resulting activated carbon was characterized using Scanning Electron Microscopy (SEM) to examine its surface morphology. Adsorption experiments were subsequently conducted employing methylene blue as a model dye at various initial concentrations to determine the adsorption efficiency. The results revealed that the K?CO?-activated sorghum bagasse carbon exhibited excellent adsorption capability, achieving a removal rate of up to 99% for methylene blue. Overall, these findings demonstrate that sorghum bagasse has considerable potential as a sustainable and cost-effective precursor for producing high-quality activated carbon with outstanding dye adsorption performance.
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[1] M. Nurcholis and D. A. Puspitaningrum, Pengembangan Sorgum (Sorghum bicolor L.) sebagai Produk Potensi Penyangga Energi, LPPM Universitas Pembangunan Nasional “Veteran” Yogyakarta, Yogyakarta, 2019, ISBN 978-623-7594-24-6.
[2] E. Murtini and N. Salsabila, Sorgum dan Pemanfaatannya dalam Industri Pangan, UB Press, Malang, 2021.
[3] J. Sutiawan, et al., “Pemanfaatan Maltodextrin Singkong untuk Perekat Ramah Lingkungan dalam Pembuatan Papan Partikel dari Bagas Sorgum,” Jurnal Sylva Lestari, vol. 8, no. 2, 2020.
[4] N. Sifoun, A. R. Yeddou, L. H. Nouri, and I. Khalfi, “Parametric and Equilibrium Studies of Methylene Blue Removal by Adsorbents: Crude and Modified Sorghum Stems-Based,” Algerian Journal of Chemical Engineering, vol. 2, pp. 47–59, 2024.
[5] E. Sujiono, Material Karbon Berbahan Dasar Limbah Tempurung Kelapa, Badan Penerbit UNM, Makassar, 2022.
[6] R. K. Mishra, B. Singh, and B. Acharya, “A comprehensive review on activated carbon from pyrolysis of lignocellulosic biomass: An application for energy and the environment,” Carbon Resources Conversion, vol. 7, no. 4, 100228, 2024
[7] D. Chen, E. Shuang, and L. Liu, “Analysis of Pyrolysis Characteristics and Kinetics of Sweet Sorghum Bagasse and Cotton Stalk,” J. Therm. Anal. Calorim., vol. 131, pp. 1899–1909, 2018
[8] D. Tani and S. Lumingkewas, “Pembuatan dan karakterisasi karbon aktif dari arang tempurung kelapa dengan kombinasi aktivasi kimia dan fisika,” *Fullerene Journal of Chemistry*, vol. 7, no. 2, pp. 120–132,2022,doi: 10.37033/fjc.v7i1.515.
[9] J. M. Illingworth, B. Rand, and P. T. Williams, “Understanding the mechanism of two-step, pyrolysis–alkali chemical activation of fibrous biomass for the production of activated carbon fibre matting,” Fuel Processing Technology, vol. 235, p. 107348, 2022.
[10] J.-H. Kim, G. Lee, J.-E. Park, and S.-H. Kim, “Limitation of K?CO? as a Chemical Agent for Upgrading Activated Carbon,” Processes, vol. 9, no. 6, p. 1000, 2024
[11] T. Manimekala, R. Sivasubramanian, M. A. Dar, and G. Dharmalingam, “Crafting the architecture of biomass-derived activated carbon via electrochemical insights for supercapacitors: A review,” *RSC Advances*, vol. 15, pp. 2490–2522, 2025.
[12] C.-H. Tsai and W.-T. Tsai, “Optimization of physical activation process by CO? for activated carbon preparation from Honduras mahogany pod husk,” Materials, vol. 16, no. 19, 6558, 2023
[13] M. Kwiatkowski, “An analysis of the textural properties of activated carbons obtained from biomass via the LBET, NLDFT and QSDFT methods,” Scientific Reports, vol. 14, 26472, 2024
[14] S. Kundu, T. Khandaker, M. A.-M. Anik, M. K. Hasan, P. K. Dhar, S. K. Dutta, M. A. Latif, and M. S. Hossain, “A comprehensive review of enhanced CO? capture using activated carbon derived from biomass feedstock,” RSC Advances, vol. 14, pp. 29693–29736, 2024.
[15] L. Ifa et al., Bioadsorben dan Aplikasinya. Sumatra Barat: Cendekia Muslim Press, 2021.
[16] N. Sulaiman, et al., “Kinetics, Thermodynamics, and Isotherms of Methylene Blue Adsorption Study onto Cassava Stem Activated Carbon,” MDPI Journal, vol. 13, pp. 4–5, 2021
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