Suryandaru, Henokh Vidhi (2020) Studi Pengaruh Variasi Konsentrasi Asam Sulfat pada Proses Leaching Ferronickel Mini Blast Furnace terhadap Komposisi Kimia, Yield, dan Senyawa NiSO4.6H2O. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Salah satu jenis baterai yang dipakai pada electric vehicle baterai NMC yang berbahan nikel, kobalt, dan mangan. Baterai NMC dibuat dari nikel kualitas tinggi yang dihasilkan dari bijih sulfida berupa nickel (II) sulfate hexahydrate (NiSO4.6H2O). Namun jumlah bijih sulfida yang semakin sedikit memicu kita untuk menghasilkan NiSO4.6H2O dari bijih laterit yang jumlahnya lebih banyak di alam. Penelitian ini bertujuan untuk menghasilkan nikel sulfat dari bijih laterit paling optimal melalui proses smelting-fire refining-leaching. Pada proses leaching ini digunakan asam sulfat dengan variasi konsentrasi 1M, 1,5M, 2M, 2,5M, dan 3M sebagai reagen pelarut logam nikel yang dilanjutkan proses separasi dengan menambahkan larutan NaOH 2,5M hingga pH mencapai 3,5 lalu disaring dan dikristalisasi untuk menghasilkan NiSO4.6H2O. Variasi konsentrasi asam sulfat ini penting untuk dipelajari karena dapat mempengaruhi komposisi kimia, yield, dan senyawa yang dihasilkan. Dilakukan pengujian XRD untuk mengetahui senyawa yang dihasilkan serta pengujian EDX dan AAS untuk mengetahui komposisi kimia pada kristal nikel sulfat dan filtrat nikel sulfat. Hasilnya kandungan nikel terbanyak dihasilkan pada variasi 2,5M sebanyak 23,81% namun masih terdapat senyawa NiO dan FeO dalam produk yang dihasilkan. Untuk yield tertinggi dihasilkan pada variasi konsentrasi asam sulfat 2M dan 2,5M sebesar 12,36%. NiSO4.6H2O dapat dihasilkan pada semua variasi konsentrasi, hanya saja senyawa masih didominasi Na2SO4 yang merupakan produk dari proses netralisasi. Variasi konsentrasi asam sulfat paling optimal adalah 2M karena memiliki yield tertinggi dan tidak tersisa senyawa NiO dan FeNi pada produk.
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One type of battery used in electric vehicles is NMC batteries made from nickel, cobalt, and manganese. NMC batteries are made from high quality nickel produced from sulfide ore in the form of nickel (II) sulfate hexahydrate (NiSO4.6H2O). However, the amount of sulfide ore is getting smaller, triggering us to produce NiSO4.6H2O from laterite ore which is more numerous in nature. This research aims to produce the most optimal nickel sulfate from laterite ore through the smelting-fire refining-leaching process. In this leaching process used sulfuric acid with variations in concentrations of 1M, 1.5M, 2M, 2.5M, and 3M as nickel metal solvent reagents followed by the separation process by adding a 2.5M NaOH solution until the pH reaches 3.5 then filtered and crystallized to produce NiSO4.6H2O. This variation in sulfuric acid concentration is important to study because it can affect the chemical composition, yield, and compound produced. XRD testing was carried out to determine the compounds produced as well as EDX and AAS tests to determine the chemical composition of nickel sulfate crystals and nickel sulfate filtrate. The result is that the highest nickel content is produced in a variation of 2.5M as much as 23.81% but there are still NiO and FeO compounds in the products produced. The highest yields were produced at variations of 2M and 2.5M sulfuric acid concentrations of 12.36%. NiSO4.6H2O can be produced in all variations of concentration, only the compound is still dominated by Na2SO4 which is a product of the neutralization process. The most optimal variation of sulfuric acid concentration is 2M because it has the highest yield and no NiO and FeNi compounds remain in the product.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSMt 669.141 3 Sur s-1 2020 |
| Uncontrolled Keywords: | leaching, yield, komposisi kimia, senyawa |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL220 Electric vehicles and their batteries, etc. T Technology > TN Mining engineering. Metallurgy > TN688 Hydrometallurgy |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Henokh Vidhi Suryandaru |
| Date Deposited: | 07 Mar 2025 03:11 |
| Last Modified: | 07 Mar 2025 03:12 |
| URI: | http://repository.its.ac.id/id/eprint/73365 |
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