Digbyana, Erdhanti (2019) Optimasi Suhu dan Lama Pemanasan untuk Mendapatkan Garam Kalsium Sitrat dari Dolomit Terkalsinasi Menggunakan Asam Sitrat dengan Kendala Kadar Timbal. Sarjana thesis, Universitas Brawijaya.
Abstract
Osteoporosis merupakan penyakit yang dapat mengakibatkan tulang menjadi rapuh dan lebih cenderung patah. Penyakit ini disebabkan oleh defisiensi kalsium, kondisi dimana kalsium tidak mencukupi untuk metabolisme. Dolomit (CaMg(CO3)2) merupakan batuan karbonat yang kaya kalsium, namun masih kurang dimanfaatkan. Dolomit memiliki struktur yang kompleks dan terkadang mengandung timbal. Reaksi presipitasi menggunakan asam sitrat diperlukan sebagai proses untuk menghasilkan garam sitrat. Pada proses ini diperlukan suhu dan lama pemanasan yang sesuai untuk menghasilkan endapan garam dengan kandungan Ca yang tinggi dan Pb rendah. Penelitian ini dilakukan dengan menggunakan rancangan CCD metode RSM dengan suhu (70 – 90oC) dan lama pemanasan (15–30 menit) sebagai faktor menggunakan Design Expert 7.1.5. Hasil optimal diverifikasi menggunakan uji T dan menunjukkan hasil tidak berbeda nyata (p>0,05). Kondisi optimal proses presipitasi didapatkan pada suhu pemanasan 87,18oC dan lama pemanasan 21,63 menit menghasilkan respon rendemen kalsium sebesar 23,013% dan respon kadar timbal sebesar 5,8721 mg/kg. Kata Kunci : Dolomit, Asam sitrat, Kalsium, Timbal, Suhu, Lama pemanasan ABSTRACT Osteoporosis is a disease that causes bones to become brittle and more likely to fracture (break). This disease caused by calcium deficiency, condition in which calcium is insufficient for metabolism. Dolomite (CaMg(CO3)2) are carbonate rocks which is rich in calcium, but still underutilize. It has a complex structure and sometimes contains lead. Precipitation reaction using citric acid is needed as a process to produce citric salt. In this process, temperature and heating time are appropriate to produce a salt deposit with a high Ca and low Pb. This research was conducted using a CCD of the RSM with temperature (70-90oC) and heating time (15-30 minutes) as factors which were processed using Design Expert 7.1.5. optimum result is verified using T Paired Test where the results of prediction is no significant difference (p> 0.05). The optimal conditions of the precipitation process were obtained at temperature of 87.18oC and a heating time of 21.63 minutes were resulted in a calcium yield response of 23.013% and a lead level response of 5.8721 mg / kg
English Abstract
Osteoporosis is a disease that causes bones to become brittle and more likely to fracture (break). This disease caused by calcium deficiency, condition in which calcium is insufficient for metabolism. Dolomite (CaMg(CO3)2) are carbonate rocks which is rich in calcium, but still underutilize. It has a complex structure and sometimes contains lead. Precipitation reaction using citric acid is needed as a process to produce citric salt. In this process, temperature and heating time are appropriate to produce a salt deposit with a high Ca and low Pb. This research was conducted using a CCD of the RSM with temperature (70-90oC) and heating time (15-30 minutes) as factors which were processed using Design Expert 7.1.5. optimum result is verified using T Paired Test where the results of prediction is no significant difference (p> 0.05). The optimal conditions of the precipitation process were obtained at temperature of 87.18oC and a heating time of 21.63 minutes were resulted in a calcium yield response of 23.013% and a lead level response of 5.8721 mg / kg
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FTP/2019/508/052002607 |
| Uncontrolled Keywords: | Dolomit, Asam sitrat, Kalsium, Timbal, Suhu, Lama pemanasan-Dolomite, Citric Acid, Calsium, Lead, Temperature, Heating Time |
| Subjects: | 600 Technology (Applied sciences) > 664 Food technology > 664.4 Food salts |
| Divisions: | Fakultas Teknologi Pertanian > Teknologi Hasil Pertanian |
| Depositing User: | Agus Wicaksono |
| Date Deposited: | 05 Aug 2020 08:13 |
| Last Modified: | 05 Aug 2020 08:13 |
| URI: | http://repository.ub.ac.id/id/eprint/180419 |
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