Hartono, Chynthia Devi, Marlie, Kevin Jonathan, Putro, Jindrayani Nyoo, Soetaredjo, Felycia Edi, Ju, Yi Hsu and Sirodj, Dwi Agustin Nuryani (2016) Levulinic acid from corncob by subcritical water process. International Journal of Industrial Chemistry, 7 (4). 401 -409. ISSN 2228-5970 (print); 2228-5547 (online)
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Abstract
The productions of levulinic acid from corncob were carried out by subcritical water process in a temperature range of 180–220°C, reaction time of 30, 45, and 60 min. The acid modified zeolite was used as the catalyst in the subcritical water process. The ratio between the mass of zeolite and volume of hydrochloric acid in the modification process were 1:5, 1:10 and 1:15. The optimum values of the process variables in the subcritical water process for the production of levulinic acid from corncob were: Temperature of 200°C; 1:15 zeolite to acid ratio; and reaction time of 60 min. The maximum levulinic acid concentration obtained in this study was 52,480 ppm or 262.4 mg/g dried corncob.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Levulinic acid Subcritical water Modified zeolite |
| Subjects: | Engineering Engineering > Chemical Engineering |
| Divisions: | Faculty of Engineering > Chemical Engineering Study Program |
| Depositing User: | Felycia Edi Soetaredjo |
| Date Deposited: | 17 Jul 2017 08:33 |
| Last Modified: | 23 May 2018 01:51 |
| URI: | http://repository.ukwms.ac.id/id/eprint/11258 |
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