Optimization of Ethanol Purification by Adsorption Process Using Silica Gel with Response Surface Methodology
DOI:
https://doi.org/10.70609/g-tech.v9i3.7433Keywords:
Ethanol, Purification, Adsorption, Optimization, RSMAbstract
Ethanol from the fermentation of sugar, cane, and biomass can be used as a renewable fuel, but it must be purified first with adsorption being an efficient method. This study aims to optimize ethanol purification using silica gel adsorption, investigating the effects of flow rates 0.1; 0.2; 0.3; 0.4; 0.5 ml/s and adsorbent weights 20, 30, 40, 50, 60 grams. Response Surface Methodology (RSM) with Central Composite Design (CCD) was used for optimization. The experimental results were input into Design-Expert 13 for RSM optimization using flow rate and adsorbent weight. The highest ethanol concentration of 99.8% was achieved at a flow rate of 0.1 ml/s and adsorbent weight of 60 grams. RSM optimization resulted in a concentration of 99.804% at a flow rate of 0.103 ml/s and silica gel weight of 59.818 grams. The results indicate that increasing adsorbent weight and decreasing flow rate significantly improve ethanol purity. Achieving 99.8% ethanol confirms the effectiveness of silica gel adsorption and supports the development of biofuels as renewable energy sources to reduce dependence on petroleum.
References
Ambarwati, R., Andini, S. & Salwah, S. (2023). Optimasi Waktu Perendaman dan Waktu Ekstraksi Pembuatan Gelatin dari Sisik Ikan Nila Hitam (Oreocharomis niloticus) sebagai Gelling Agent. Jurnal Sains dan Kesehatan. 5(5). 685–694.
Amsar, Proborini, W. D., & Suryanti, F. (2016). Inovasi Alat Bioreaktor Dengan Sistem Fluidisasi Dalam Pembuatan Etanol Dari Molasses. Jurnal Reka Buana, 1(1), 49–56.
Anwar, K., Istiqamah, F., & Hadi, S. (2021). Optimasi Suhu dan Waktu Ekstraksi Akar Pasak Bumi (Eurycoma longifolia jack.) Menggunakan Metode RSM (response surface methodology) dengan Pelarut Etanol 70%. Jurnal Pharmascience, 8(1), 53.
Atikah (2019). Pengaruh Waktu dan Berat Adsorben Bentonit pada Proses Dehidrasi Bioetanol. Jurnal Teknik Kimia. 4(2), 25-31.
Bas, D., & Boyaci, I. H. (2017). Modeling and optimization i: Usability of response surface methodology. Journal of Food Engineering, 78(3), 836–845.
Bobsaid, A. A. (2023). Optimasi Pemurnian Bioetanol Dari Kulit Pisang Raja Dengan Distilasi Ekstraktif Menggunakan Response Surface Methodology (RSM). Skripsi, UPN “Veteran” Jawa Timur
Bramanta, A K, Prasetia, D M A, dan Susilowati (2023). Pemanfaatan Limbah Sabut dan Tempurung Kelapa Sawit sebagai Silica Gel. Jurnal Ilmiah Universitas Batanghari Jambi. 23(2), 2366-2372.
Dwijayanti, E., Munadi, R., Hasbi, H., & Studi Kimia, P. (2023). Pengaruh Arang Aktif Tempurung Kemiri (Aleurites Moluccanus L. Willd) dengan Variasi Suhu terhadap Kualitas Minyak. Jurnal Kolaboratif Sains. 6(9), 1207–1213.
González, F., Rodríguez, A., & Martínez, J. (2021). Performance analysis of silica gel for ethanol-water separation in adsorption systems. Journal of Environmental Chemical Engineering, 9(6), 106155.
Greenland, S., Senn, S.J., Rothman, K.J., Carlin, J.B., Poole, C., Goodman, S.N. & Altman, D.G. (2016). Statistical tests, P values, confidence intervals, and power: a guide to misinterpretations. European Journal of Epidemiology. 31(4). 337–350.
Ibrahim, M. A., Musyaffa, M. H., Heriyanto, & Haryadi. (2022). Purification of Ethanol By Continuous Adsorption Method Using Zeolite 3a and Calcium Oxide. Jurnal Kimia Riset, 7(1), 9–19.
Inglezakis, V. J., Balsamo, M., & Montagnaro, F. (2020). Liquid-Solid Mass Transfer in Adsorption Systems - An Overlooked Resistance? Industrial and Engineering Chemistry Research, 59(50), 22007–22016.
Oktaviani, S., Chairul, dan Silvia Reni Yenti, S. R (2017). Pemurnian Bioetanol Hasil Fermentasi Nira Nipah Menggunakan Proses Destilasi Adsorpsi Menggunakan Adsorben Silica Gel. Jom FTEKNIK, 4(2). 1-3
Purwitasari, et al. (2022). Pisang Sebagai Adsorben Adsorption Of Metal Cadmium (Cd) To Cadmium Sulphate (Cdso 4) Using Banana Trees As. Jurnal Chemurgy, 06(1), 131–136.
Rahmawati, I., Fachri, B.A., Manurung, Y.H., Reza, M., Palupi, B., Rizkiana, M.F. and Amini, H.W. (2022). Penerapan Response Surface Methodology dalam Optimasi Kondisi Proses Ekstraksi Antosianin pada Limbah Kulit Kakao dengan Metode Maserasi. Jurnal Kimia dan Terapannya, 6(1), 24-31
Ramadhanti, A., Nurjanah, S., Widyasanti, A., & Ainina, N. (2024). Pemodelan kondisi hidrodistilasi minyak atsiri jahe merah (Zingiber officinale var. Roscoe) dengan menggunakan Response Surface Methodology. Jurnal Teknologi Industri Pertanian, 18(2), 429–439.
Riyanti, A., Hadrah, H., Kasman, M., Monica, A., & Sihombing, Z. (2024). Recycling of water treatment plant sludge for copper adsorption from aqueous solutions. Journal of Suboptimal Lands. 13(2), 174–185.
Riza, M., Fachraniah, & Syafruddin (2022). Pembuatan Silika Gel dari Abu Sekam Padi dengan Pereaksi Asam Kuat dan Asam Lemah dengan Menggunakan Variasi Jumlah Abu Silikat. Jurnal Teknologi, 22(2), 55-6.
Sehwantoro, W., Hindarti, F., & Oktivina, M. (2021). Elektrik Sebagai Alat Destilasi Pada Proses Pembuatan Bioethanol. Jurnal Sainstech, 31(2), 1–10.
Tesfaw, A., Toksoy, E. and Assefa, F. (2021). Optimization of ethanol production using newly isolated ethanologenic yeasts. Biochemistry and Biophysics Reports. 100886.
Wahyudi, J.J & Gusmawarni (2017), Pemurnian Bioetanol Fuel Grade dari Crude Ethanol (Variabel Distilasi-Ekstraksi). Jurnal Inovasi Proses, 2(2), 43-48
Zabed, H., Sahu, J. N., Suely, A., Boyce, A. N., & Faruq, G. (2017). Bioethanol production from renewable sources: Current perspectives and technological progress. Renewable and Sustainable Energy Reviews, 71(2017), 475–501.
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