Aurelia, Salsa Zulfa (2022) Studi Pengaruh Variasi Jumlah Selulosa Dan Konsentrasi Larutan Koagulan Pada Proses Sintesis Cellulose Beads Dari Eceng Gondok. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Tanaman eceng gondok merupakan gulma perairan yang dapat mengganggu ekosistem air. Disisi lain, eceng gondok memiliki kandungan selulosa yang cukup tinggi, yang berpotensi untuk pemanfaatan aplikasi tingkat lanjut yang ramah lingkungan, seperti pembuatan menjadi cellulose beads. Dalam penelitian ini, ekstraksi selulosa eceng gondok dilakukan dengan dua tahap yaitu proses delignifikasi dan proses bleaching. Hasil ekstraksi selulosa eceng gondok dijadikan sebagai bahan komposisi pembuatan cellulose beads. Sintesis cellulose beadsmenggunakan pelarut NaOH-urea-air dan menggunakan metode dropping dengan variasi jumlah selulosa sebesar 5 dan 7 wt%. Selain itu, larutan koagulan yang digunakan adalah asam nitrat (HNO3) dengan konsentrasi yang berbeda sebesar 4, 6, dan 8 M. Tujuan dari penelitian ini adalah untuk menganalisa pengaruh variasi jumlah selulosa dan konsentrasi larutan koagulan terhadap morfologi, porositas, dan kapasitas swelling pada cellulose beads. Pada penelitian ini dilakukan eberapa karakterisasi, antara lain pengujian FTIR dan pengujian XRD untuk menganalisa struktur selulosa eceng gondok, SEM dan mikroskop optik digunakan untuk melihat morfologi cellulose beads dan pengujian kapasitas swelling cellulose beads. Dari hasil karakterisasi SEM dan mikroskop optik didapatkan bahwa cellulose beads memiliki permukaan yang kasar, ukuran dengan diameter 3,7 – 4,28 mm dan berat sebesar 0,03 – 0,052 gram. Penambahan jumlah selulosa menyebabkan bentuk cellulose beads seperti tetesan air(teardrop). Penambahan konsentrasi koagulan dan jumlah selulosa dapat menurukankan luasanporositas. Variasi jumlah selulosa 5% dengan konsentrasi koagulan 6 M memiliki daya swellingterbesar yaitu 12,53% ± 0,0078 dan sesuai dengan hasil pengujian FTIR karena gugus OH pada beads dengan intensitas yang tinggi akan menghasilkan daya swelling yang tinggi juga
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Water hyacinth is an aquatic weed that can disrupt the air ecosystem. Due to high cellulose content, water hyacinth can be used for advanced uses that are environmentally friendly, such as making cellulose beads. In this study, water hyacinth cellulose extraction was carried out in two stages, namely the delignification process and the bleaching process. The results of water hyacinth cellulose extraction are used as ingredients for the composition of cellulose beads. The synthesis of cellulose beads used NaOH-urea-water as a solvent and the reduction method with variations in the amount of cellulose by 5 and 7 wt%. In addition, the coagulant solution used was nitric acid (HNO3) with different concentrations of 4, 6, and 8 M. The purpose of this study was to analyze the effect of variations in the amount of cellulose and the concentration of coagulant solution on the morphology, porosity, and swelling capacity of cellulose beads. In this study, several characterizations were carried out including FTIR testing and XRD testing to analyze the structure of water hyacinth cellulose, SEM and an optical microscope were used to see the morphology of cellulose beads and test the swelling capacity of cellulose beads. From the results of SEM characterization and optical microscopy, it was found that the cellulose beads had a rough surface, with a diameter of 3.7 – 4.28 mm and a weight of 0.03 – 0.052 grams. The addition of the amount of cellulose causes cellulose granules to form like teardrop. The addition of coagulant concentration and the amount of cellulose can reduce the porosity area. The variation in the amount of cellulose 5% with a coagulant concentration of 6 M has the largest swelling power of 12.53% ± 0,0078 and is in accordance with the results of the FTIR test because the OH group on the beads with high intensity will also produce high swelling power.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSMt 628.164 Aur s-1 2022 |
| Uncontrolled Keywords: | Asam Nitrat, Cellulose Beads, Eceng Gondok, Koagulan, Selulosa Cellulose, Cellulose Beads, Coagulants, Nitric Acid, Water Hyacinth |
| Subjects: | Q Science > QC Physics > QC162 Adsorption and absorption |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Mr. Marsudiyana - |
| Date Deposited: | 17 Dec 2024 06:46 |
| Last Modified: | 17 Dec 2024 06:46 |
| URI: | http://repository.its.ac.id/id/eprint/116000 |
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