Haque, Annisa Mutiara Salma (2025) OPTIMASI PROSES ADSORPSI ANGKA ASAM BIO-OIL HASIL PIROLISIS BATANG TEMBAKAU MENGGUNAKAN RESPONSE SURFACE METHODOLOGY (RSM). Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Tobacco stalks are a biomass waste abundantly available in Indonesia, but they have not been optimally utilized. One potential use is through the pyrolysis process, which can produce bio-oil, an environmentally friendly alternative liquid fuel. However, bio-oil has the disadvantage of a high acid value due to the content of organic compounds such as acetic acid and phenolics, which can cause corrosion and reduce fuel performance. To reduce this acid value, research was conducted, including delignification of tobacco stalks using a 12% NaOH solution, pyrolysis at 400°C for 1 hour, and a purification stage using an adsorption method using coconut shell activated carbon with various activated carbon masses (5 g, 7.5 g, 10 g, 12.5 g, and 15 g) and adsorption times (30 minutes, 60 minutes, 90 minutes, 120 minutes, and 150 minutes). The adsorption process was optimized using the Response Surface Methodology (RSM) approach. The results showed that the lowest acid number was obtained with an adsorbent mass of 15 grams and an adsorption time of 150 minutes, namely 0.61990 mgKOH/g. The cubic model was selected as the best model in the Response Surface Methodology (RSM) with an R² value of 0.9934, with a p-value <0.0001, indicating a very strong relationship between the variables and the response.
| 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: | ANNISA MUTIARA SALMA HAQUE | ||||||||
| Date Deposited: | 16 Sep 2025 01:28 | ||||||||
| Last Modified: | 16 Sep 2025 01:28 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/43370 |
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