Analisis Pengaruh Jumlah Rekristalisasi Bertahap Pada Kristal NiSO4.6H2O Hasil Presipitasi Dari Larutan Leaching Ferronickel Menggunakan Aditif CaCO3

Muhammad, Fadhlan Warithdin (2022) Analisis Pengaruh Jumlah Rekristalisasi Bertahap Pada Kristal NiSO4.6H2O Hasil Presipitasi Dari Larutan Leaching Ferronickel Menggunakan Aditif CaCO3. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Salah satu komponen penting pada mobil listrik adalah baterai dengan nickel mangan cobalt (NMC) sebagai salah satu jenis baterai terbaik. Senyawa nikel (II) sulfat heksahidrat (NiSO4.6H2O) dibutuhkan sebagai material penyusun katoda baterai NMC. Penelitian ini bertujuan untuk menganalisis pengaruh rekristalisasi bertahap pada kristal NiSO4.6H2O untuk meningkatkan kandungan dari nikel. Bahan yang digunakan ialah ferronickel hasil smelting dari mini blast furnace. Proses leaching dilakukan dengan larutan H2SO4 2M sebanyak 120 ml, pada temperatur 90°C selama 6 jam dengan kecepatan pengadukan sebesar 200 rpm. Proses presipitasi dilakukan pada temperatur 90°C menggunakan larutan CaCO3 hingga pH 3,01. Filtrat hasil presipitasi dipanaskan pada temperatur 90°C selama 24 jam. Kemudian, filtrat hasil pemanasan dikristalisasi pada temperatur 60°C selama 4 jam. filtrat hasil pencucian melalui proses rekristalisasi bertahap, dimana filtrat hasil pencucian dikristalisasi. Kemudian, kristal dicuci menggunakan aquadest. Setelah itu, filtrat hasil pencucian dikristalisasi kembali (rekristalisasi bertahap satu kali). Pada rekristalisasi bertahap dua kali, kristal hasil rekristalisasi bertahap satu kali dicuci kembali dengan aquadest dan filtrat dikristalisasi kembali. Proses ini dilakukan secara terus-menerus hingga tiga dan empat kali pengulangan dengan hasil akhir berupa kristal NiSO4.6H2O. Hasil terbaik rekristalisasi bertahap diperoleh pada variasi dua kali dengan kandungan 52,5% Ni dan recovery Ni sebesar 98,57%.
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One of the important components in electric cars is a battery with nickel manganese cobalt (NMC) as one of the best types of batteries. nickel (II) sulfate hexahydrate (NiSO4.6H2O) compounds are needed as a material for the cathode of NMC batteries. This study aimed to analyze the effect of staged recrystallization on crystals to increase the nickel content. The material used is ferronickel smelted from a mini blast furnace. The leaching process was carried out with 120 ml of 2M H2SO4 solution, at a temperature of 90°C for 6 hours with a stirring speed of 200 rpm. The precipitation process was carried out at a temperature of 90°C using a CaCO3 solution up to a pH of 3.01. The precipitated filtrate was heated at a temperature of 90°C for 24 hours. Then, the heated filtrate was crystallized at a temperature of 60°C for 4 hours. The washed filtrate goes through a staged recrystallization process, in which the washed filtrate is crystallized. Then, the crystals were washed using aquadest again. After that, the filtrate from the washing was re-crystallized again (once staged recrystallization). In two stages of recrystallization, the crystals resulting from once stages of recrystallization are washed again with distilled water and the filtrate is crystallized again (twice recrystallized in stages). This process is carried out continuously for three and four repetitions with the final result in the form of NiSO4.6H2O crystals.The best results of stagedrecrystallization were obtained at twice variation with content of 52,5% Ni and Ni recovery of 98,57%.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	ferronickel, leaching, presipitasi, rekristalisasi bertahap ferronickel, leaching, precipitation, staged recrystallization
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN799.N6 Nickel--Metallurgy
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Mr. Marsudiyana -
Date Deposited:	11 Feb 2025 01:45
Last Modified:	11 Feb 2025 01:45
URI:	http://repository.its.ac.id/id/eprint/118616

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