Ginting, Simparmin Br and Kristian, Jonathan (2022) Ethanol Dehydration in Fixed Bed Column Using Pellet Adsorbent From Lampung Natural Zeolite. Jurnal Rekayasa Kimia dan Lingkungan, 17 (1). pp. 54-64. ISSN 1412-5064
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Abstract
Zeolite is one of adsorbents easily found in nature, especially in Indonesia. One type of zeolite usually used for dehydration of ethanol-water mixtures is Lampung Natural Zeolite (LNZ). According to data from the Directorate of Regional Potential Development in 2012, the LNZ amount in Lampung Province is 31,173,505 tons. In this conducted research, the preparation was carried out in two stages, namely making the LNZ in the form of pellets, and activating the LNZ pellets. The manufacturing stage of the LNZ into pellets was carried out by pulverizing it into a size of 200 mesh, mixing it with distilled water and 35% wheat flour of the LNZ weight, and stirring the mixture until smooth. Then, it was formed into pellets with a diameter of 2 mm and a length of 1 cm, dried using an oven at a temperature of 100℃ until constant weight was obtained, and placed in a desiccator. Furthermore, in the LNZ activation stage, the zeolite was calcined using a furnace at 300℃ for 5 hours. Next, LNZ was ready to be characterized using FTIR, XRD, XRF, BET, and SEM. The activated LNZ pellets were used in the dehydration process of the ethanol-water mixture in an upflow fixed bed adsorption column with a flow rate of 10 ml/min and bed heights of 5, 10, and 15 cm. The Adam adsorption kinetics models of Boharts, Yoon Nelson, and Thomas were used to obtain a breakthrough curve and a suitable adsorption kinetics model. As a result, LNZ had been successfully formed into pellets as could be seen when it was immersed and the ethanol-water solution was flowed, it’s shape did not change. The activated LNZ pellets had a surface area of 11,670 m2 /g, a pore size of 57,091, and a total pore volume of 0.035958 cc/g. The highest R2 value obtained in the Adam Bohart equation model was 0.9742 with the highest concentration of 98.797% and a bed height of 15 cm. It was concluded that LNZ pellets could be used as an adsorbent in fixed bed adsorption column to purify ethanol.
| Item Type: | Article |
|---|---|
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering |
| Divisions: | Fakultas Teknik (FT) > Prodi Teknik Kimia |
| Depositing User: | SIMPARMIN |
| Date Deposited: | 12 Jun 2022 11:47 |
| Last Modified: | 12 Jun 2022 11:47 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/42361 |
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