Hasbi, Akhmad Syafiq (2026) Optimasi Etanol Melalui Proses Adsorpsi Menggunakan Molekular Sieve 3A Dengan Metode Differential Expert. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Ethanol has significant potential as a renewable energy source that can be utilized as an environmentally friendly alternative fuel. However, ethanol produced through conventional distillation still reaches a maximum purity of only around 95–96% due to the formation of an ethanol–water azeotrope, thereby requiring further purification to obtain fuel-grade ethanol. This study aimed to enhance ethanol purity using an adsorption distillation method with 3A molecular sieve and to determine the optimum operating conditions using Response Surface Methodology (RSM). The research variables consisted of 3A molecular sieve weights of 20, 40, 60, 80, and 100 grams and reflux ratios of 0.2, 0.4, 0.6, 0.8, and 1 mL/s. The adsorption distillation process was conducted at 78°C using an adsorption distillation apparatus. Experimental data were analyzed using Design-Expert 13 software based on the Central Composite Design (CCD) method with 11 experimental runs. The results showed that increasing the molecular sieve weight and reflux ratio positively affected ethanol concentration. The optimum condition was achieved at a molecular sieve weight of 100 grams and a reflux ratio of 1 mL/s, resulting in an ethanol concentration of 99.9% with a desirability value of 1.000. These findings indicate that 3A molecular sieve is effective in improving ethanol purity to meet the fuel-grade standard according to SNI 7390:2012.
| Item Type: | Thesis (Undergraduate) | ||||||||||||
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| Subjects: | T Technology > TP Chemical technology > TP155 Chemical engineering | ||||||||||||
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||||||
| Depositing User: | Akhmad Syafiq Hasbi | ||||||||||||
| Date Deposited: | 13 Oct 2026 02:51 | ||||||||||||
| Last Modified: | 13 Oct 2026 07:06 | ||||||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/60620 |
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