Studi Pengaruh Variasi Larutan Dalam Proses Elektrolisis Untuk Sintesis Bahan Magnetik Berbahan Dasar Pasir Besi Alam

Zulkarnain, Zaidan Faraby (2023) Studi Pengaruh Variasi Larutan Dalam Proses Elektrolisis Untuk Sintesis Bahan Magnetik Berbahan Dasar Pasir Besi Alam. Diploma thesis, Institut Teknologi Sepuluh Nopember.

Text 02511940000065-Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only until 1 July 2025. Download (4MB) | Request a copy

Abstract

Mineral magnetik termasuk mineral yang penting dalam aplikasi pada kebanyakan bidang industri dan bidang teknik. Mineral yang menjadi fokus pada pembahasan ini adalah magnetit. Proses produksi bahan magnetit hingga saat ini masih relatif mahal sehingga dilakukan penelitian mengenai sintesis bahan magnetik berbahan dasar pasir besi alam menggunakan metode elektrolisis yang lebih sederhana. Proses elektrolisis dilakukan dengan dua elektroda dimana graphite pot yang diisi oleh pasir besi alam bertindak sebagai anoda dan elektroda besi bertindak sebagai katoda dengan tiga variasi larutan elektrolit yaitu FeCl2, FeSO4, dan NaOH. Tujuan dari penelitian ini adalah untuk menganilisis pengaruh variabel larutan elektrolit FeCl2, FeSO4, dan NaOH terhadap ukuran partikel serta sifat magnetik yang dihasilkan. Massa produk yang dihasilkan setelah proses pencucian pada larutan FeCl2, FeSO4, dan NaOH berturut-turut adalah 1,84 gram, 0,41 gram, dan 0,11 gram. Hasil pengujian FTIR menunjukkan adanya fingerprint yang diamati pada 580 cm-1 dikaitkan dengan ikatan Fe-O dalam kisi kristal Fe3O4. Analisis pengujian XRD menunjukkan bahwa sampel yang dihasilkan berupa magnetit dengan ukuran kristalit 0,018 hingga 0,02 mikrometer. Pengujian SEM memperlihatkan bahwa beberapa butiran kristal magnetit berukuran lebih dari 100 µm dengan bentuk butiran dan gumpalan. Hasil karakterisasi VSM menunjukkan sifat superparamagnetik yang muncul pada ketiga larutan tersebut dengan nilai saturasi tertinggi senilai 40,22 emu/g dimiliki oleh variasi larutan FeSO4 dan nilai saturasi terendah senilai 37,90 emu/g dimiliki oleh variasi larutan NaOH.
=====================================================================================================================================
Magnetic minerals are important minerals in many industrial and engineering aplications. Magnetic minerals include magnetite, hematite, and maghemite. The mineral that is the focus of this discussion is magnetite. The process of producing magnetite material is still relatively expensive, so research is being carried out on the synthesis of magnetic materials based on natural iron sand using a simpler electrolysis method. The electrolysis process is carried out with two electrodes where a graphite pot filled with natural iron sand acts as the anode and the iron electrode acts as the cathode. There are three electrolyte solutions used in each electrolysis process which are FeCl2, FeSO4, and NaOH. The purpose of this study is to analyze the effect of the electrolyte solution variables FeCl2, FeSO4, and NaOH on particle size and the resulting magnetic properties. The product masses produced after washing process in FeCl2, FeSO4, and NaOH solutions are 1,84 grams, 0,41 grams, and 0,11 grams respectively. The results of the FTIR test showed that there was a fingerprint observed at 580 cm-1 associated with the Fe-O bond in the Fe3O4 crystal lattice. Analysis of the XRD test showed that the resulting sample was in the form of magnetite with a crystallize size of 0,018 to 0,02 micrometers. SEM testing showed that some of the magnetite crystal grains were larger than 100 µm in the form of grains and lumps. This phenomenon indicates that the magnetite samples produced are already in the crystalline phase. The results of the VSM characterization showed that the superparamagnetic properties appeared in the three solutions with the highest saturation value of 40,22 emu/g belonging to the variation of the FeSO4 solution and the lowest saturation value of 37,90 emu/g belonging to the variation of the NaOH solution.

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	elektrolisis,magnetit, elektrolit, electrolysis, magnetite, electrolyte
Subjects:	Q Science > QD Chemistry > QD553 Electrochemistry. Electrolysis
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Zaidan Faraby Zulkarnain
Date Deposited:	09 Feb 2023 14:37
Last Modified:	09 Feb 2023 14:37
URI:	http://repository.its.ac.id/id/eprint/96591

Actions (login required)

View Item