Hermida, Lilis and Agustian, Joni and Rugayah, Rugayah (2019) Synthesis of slow release urea fertilizer through recrystallization of urea incorporating mesostructured cellular foam (MCF) silica and its release behaviour. In: The 9th annual international conference 2019, 18-19 september 2019, Banda aceh. (Unpublished)
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Abstract
In the present study, various slow release urea fertilizers (SRUFs) were prepared through recrystallization of urea incorporating mesostructured cellular foam (MCF) silica with various compositions. In the preparation, corn starch (0.2-0.8 g) as a binder was added to a mixture of mesostructured cellular foam (MCF) silica (9.2-9.8 g) and melted urea (90 g). Then, the admixture was put in to a mould and extruded to obtain MCF/SRUF in a pellet form. After that, the MCF/SRUF was dried at 50 oC for 8h. The MCF/SRUF was examined in terms of urea desorption mechanism through static release experiments. Characterization of MCF/SRUF was observed through scanning electron microscopy with energy dispersive x-ray (SEM-EDX) analysis and Fourier-transform infrared spectroscopy. All of MCF/SRUFs more slowly released urea in water than conventional urea fertilizer. Release mechanism the MCF/SRUF was Fickian diffusion with urea release kinetic model of Y= 0.015107t0.44371
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Fakultas Teknik (FT) > Prodi Teknik Kimia |
| Depositing User: | Dr. LILIS HERMIDA |
| Date Deposited: | 14 Nov 2019 11:18 |
| Last Modified: | 14 Nov 2019 11:18 |
| URI: | http://repository.lppm.unila.ac.id/id/eprint/16347 |
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