Firgiane, Gabriel Firgiane Cinta (2026) KINETIKA REAKSI PEMBENTUKAN KALIUM SULFAT DARI LIMBAH CAIR BLEACHING EARTH DAN KALIUM HIDROKSIDA. Undergraduate thesis, UPN "VETERAN" JAWA TIMUR.
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Abstract
This study examines the kinetics of potassium sulfate (K2SO4) formation from bleaching earth industrial liquid waste. The objective is to evaluate the effects of temperature and reaction time on the conversion rate of sulfuric acid, determine the reaction order, and calculate the activation energy. The process involves reacting the diluted acid-rich liquid waste with analytical-grade potassium hydroxide (KOH) under constant stirring at temperatures of 50–70°C for 20–40 minutes. The results show that conversion increases with higher temperature and longer reaction time, reaching an optimum conversion (XA) of 96.22% at 70°C for 40 minutes. Kinetic analysis indicates that the reaction follows a pseudo first order model based on the highest coefficient of determination (R2). The calculated activation energy (Ea) is 2,297.32 J/mol with a frequency factor (k0) of 0.1858, expressed in the rate constant equation k=0.18578e^-2297.32448/T, adhering to the Arrhenius model (R2 = 0.8843) despite slight experimental deviations. These findings highlight the potential use of bleaching earth liquid waste as a raw material for potassium sulfate production and provide insight into its reaction kinetics.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155 Chemical engineering |
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| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||
| Depositing User: | Gabriel Firgiane Cinta Sari | ||||||||
| Date Deposited: | 13 Oct 2026 03:25 | ||||||||
| Last Modified: | 14 Oct 2026 01:19 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/55075 |
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