Simanjuntak, Melvin Emil and Widyawati, Paini Sri (2022) Pengeringan Ampas Tebu pada Microwave: Kinetika Pengeringan, Difusi Efektif, dan Aspek Energi. Jurnal Teknologi Hasil Pertanian (JTHP), 15 (1). pp. 62-73. ISSN 1979-0309
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Abstract
Drying is a reduction of the moisture in a material to improve the quality of the material. In a sugar factory, bagasse is a by-product that is used as fuel in a boiler. This bagasse has a high moisture content, so it still needs to be dried. In this study, the drying was carried out by using a microwave where the bagasse was chopped about 3 cm and the sample for each experiment was 150 g. The power used is 50, 60, 70, 80, 90 and 100% of the maximum power of 900 W. The sample weight is measured every minute and drying is considered complete when the mass has not changed. This study was aimed to determine the kinetics of drying and effective diffusion, on the drying of bagasse by microwave. The results showed that the rational model is the most suitable mathematical model of drying kinetics with the general form MR = (a + bx) / (1 + cx + dx2 ). This equation has the smallest R2 value of 0.99926 and the largest RMSE value is 0.008874. The effective diffusion is in the range of 1.044 x 10-7 to 2.009 x 10-7 (m2 /s). The activation energy value Ea is 4.789 W/g. The smallest SMER is in the range of 0.3229 - 0.4756 kg/kWh. SEC value is in the range of 3.10 to 2.10 kWh/kg. The geater the power used, the geater the Deff, SMER, MER, while the SEC will be smaller
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | drying; sugarcane bagasse; microwave; mathematic model of kinetics; energy |
| Subjects: | Agriculture and Food Technology |
| Divisions: | Journal Publication |
| Depositing User: | Paini Sri Widyawati |
| Date Deposited: | 29 Oct 2023 03:43 |
| Last Modified: | 23 Aug 2024 09:28 |
| URI: | https://repository.ukwms.ac.id/id/eprint/37166 |
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