Athiyah, Shofwatul (2024) Pembuatan Asam Oksalat Dari Serat Kapuk. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Until now, kapok fiber has not been fully utilized. However, kapok fiber has a high cellulose content that can be used as a basic material in the manufacture of oxalic acid. The purpose of this study was to determine how the hydrolysis temperature and the number of moles of cellulose affect the oxalic acid content produced from kapok fiber. This research was conducted in four stages, namely hydrolysis, precipitation, acidification, and crystallization. In the hydrolysis stage, kapok fiber was stirred and heated with the addition of NaOH solution. In the precipitation stage, the resulting filtrate is added with CaCl₂ solution. At the acidification stage, the precipitate obtained is added with H₂SO₄ solution. In the crystallization stage, the oxalic acid solution is cooled until oxalic acid crystals are formed. Oxalic acid crystals were then analyzed using permanganometric titration to determine the levels contained, melting point analysis, and pH to compare the characteristics of the synthesized oxalic acid with standard oxalic acid. In addition, FTIR spectroscopy analysis to determine the functional groups contained in oxalic acid. The results showed that the highest oxalic acid content was obtained in the condition of 1 mole cellulose and 70°C hydrolysis temperature, which amounted to 17.45%.
| 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: | shofwatul athiyah | ||||||||
| Date Deposited: | 03 Nov 2025 04:04 | ||||||||
| Last Modified: | 03 Nov 2025 04:04 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/45862 |
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