Izzaty, Nurul and -, Dr. Ir. Ahmad M. Fuadi, M.T. (2019) Pengaruh Waktu Pemasakan Dan Konsentrasi Sodium Hidroksida Terhadap Penurunan Kadar Lignin Pulp Dari Sekam Padi (Oryza Sativa) Dengan Proses Kraft. Skripsi thesis, Universitas Muhammadiyah Surakarta.
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Abstract
One of an agricultural waste is rice husk just used as fodder or discharged into nature. However, actually that rice husk can be used as raw material for making pulp because rice husks contain high cellulose. Pulping was made by mixing the material (rice husk) with a cooking solution (Na2S and NaOH) called the kraft process. Concentration of cooking solution Na2S 4%, variations of NaOH solution (0%, 1%, 3%, dan 5%) and variations in cooking time (30, 60, 90, and 120 minutes). Then washed, filtered, and dried in an oven to a constant weight. This research was conducted with the aim of knowing the effect of cooking time and sodium hydroxide concentration on decreasing levels of lignin pulp from rice husk by kraft process. Analysis of the results by calculating kappa numbers and lignin levels, with the highest lignin levels of 3.2220% at 30 minutes cooking time with 4% Na2S concentration, and 0% NaOH concentration. While the lowest lignin content was 2.2186% at the time of cooking 120 minutes with 4% Na2S concentration, and 5% NaOH concentration.
| Item Type: | Karya ilmiah (Skripsi) |
|---|---|
| Uncontrolled Keywords: | Rice Husk, Pulp, Kraft |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Fakultas Teknik > Teknik Kimia |
| Depositing User: | NURUL IZZATY |
| Date Deposited: | 20 Nov 2019 11:28 |
| Last Modified: | 20 Nov 2019 11:28 |
| URI: | http://eprints.ums.ac.id/id/eprint/79238 |
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