EXTRACTION OF TITANIUM COMPOUNDS FROM CHLORIDE ACID SOLUTION OF BAUXITE RESIDUE USING ACID-BASE PRECIPITATION METHOD

Authors

  • Kristina Ernilia Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University
  • Imelda Hotmarisi Silalahi Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University
  • Titin Anita Zaharah Department of Chemistry, Faculty of Mathematics and Natural Sciences, Tanjungpura University

DOI:

https://doi.org/10.26418/indonesian.v7i1.66531

Abstract

The bauxite residue from the Bayer process can be categorized into red cake and iron sand. In this paper the iron sand has been characterized and used as a research object in order to obtain material with a higher concentration of the titanium element. Iron sand has a dominant chemical content of 60% iron and 10% titanium. Titanium can be extracted by several methods, one of which is the precipitation method. The precipitation process involves dissolving minerals in an acidic solution and extracting them with a base. The type of base and the pH are factors that affect the precipitation process. The aim of this study is to determine the effect of variations in pH and type of base on the extraction of TiO2 from a solution of iron sand in hydrochloric acid and to determine the elemental composition of the precipitation product. The first treatment of the iron sands was magnetic separation, which yielded 31.76% of relatively weakly magnetic sand. The magnetic sand was leached by using HCl (25%) to result in a solid with a percentage recovery of 40.8%, followed by an alkali fusion reaction with NaOH to give 56.85% of material. This material was then dissolved in the concentrated HCl and precipitated with NH4OH and NaOH at various pH values. The elemental analysis by using XRF of the precipitation products shows that the precipitation in NH4OH and pH 8 gives the material with the highest content of the element Ti, which is 49.5%, increases from only 10% in the iron sand. The selectivity of titanium for the iron element seems to be higher for the precipitation in NaOH, pH 8 than in NH4OH, pH 8, with Ti/Fe ratios of 1.50 and 1.44, respectively

References

Amalia, D. dan Aziz, M. (2011). Percobaan Pendahuluan Pembuatan Alumina Kualitas Metalurgi dari Bauksit Kalimantan Barat. J.Teknologi Mineral dan Batubara., 7: 183-191.

Habashi, F. (1997). Hanbook of Exstractive Metallurgy, Canada, WILEY-VCH.

Khasanah, N., Zahara, T.A. dan Silalahi, I.H. (2021). Komposisi Unsur dan Mineral dalam Pasir Besi, Residu Bauksit di PT. Indonesia Chemical Alumina (ICA), Indonesian Journal of Pure and Applied Chemistry, 4:132-138.

Khasanah, N. (2021). Pemisahan Titanium Dioksida (TiO2) dari Pasir Besi Limbah PT. Indonesia Chemical Alumina (ICA), (Skripsi), Universitas Tanjungpura, Pontianak.

Rakhmawaty, E.D., Adelina, A. dan Rostika, N.A. (2017). Perbandingan Nanokristal Titanium Dioksida Metode Hidrotermal dengan P25 Degussa untuk Uji Fotokatalitik Arsenik, J.Pendidikan Kimia (JPKim), 91: 2549-3116.

Lestari, A.D. (2021). Pemisahan Zirkonium Silikat dari Pasir Puya, Residu Penambangan Emas Lokal di Kalimantan Barat, (Skripsi), Universitas Tanjungpura, Pontianak.

Wanta, K.C., Putra, F.D., Susanti, R.F., Gemilar, G.P., Astuti, W., Virdhian, S. dan Petrus, H.T.B. (2019). Pengaruh Derajat Keasaman (pH) dalam Proses Presipitasi Hidroksida Selektif Ion Logam dari Larutan Ekstrak Spent Catalyst, J. Rekayasa Proses, 13: 94-105.

Lee, D.S. dan Lie, T.K. (2002). Preparation of TiO2 Sol Using TiCl4 As A Precursor, Journal Of Sol-Gel Science and Technology, 25:121-136.

Prasdiantika, R., dan Susanto. (2016). Preparasi dan Penentuan Jenis Oksida Besi pada Material Magnetik Oksida Besi Lansilowo, J.Tekno Sains, 6:1-58.

Vidianti, I.A. dan Suprapto. (2014). Pemisahan Titanium Dioksida dari Pasir Besi Kabupaten Lumajang dengan Pelindian H3PO4 dan Agen Dekomposisi NaOH, J. Sains dan Seni., 1:1- 6.

Sulungbudi, G.T., Mujamilah dan Ridwan. (2007). Variasi Basa Pada Pembentukan Nano Partikel Magnetik Oksida Besi, J.Sains Materi Indonesia, 132 – 135.

Swastika, E.P., Hardheyanti, F., Prasetyowati, R., Ariswan dan Warsono. (2021). Pengaruh Konsentrasi HCl Terhadap Mikrostruktur dan Sifat Kemagnetan Nanopartikel Fe3O4 yang Disintesis dari Pasir Besi Pantai Glagah Kulonprogo, J. Sains Dasar, 10:24 – 29.

Saputra, F.M.A., Puspitarini, Y., Rizaldi, P.D., Firdaus, M.S.A. dan Sujarwata. (2016). Sintesis Nanopartikel Magnet Zn-Ferrite (Znfe2O4) Berbahan Dasar Pasir Besi Menggunakan Metode Kopresipitasi, Journal of Creativity Students, 1: 2502-1958.

Puspita, E., Melinia, L.A., Naibaho, M., Ramlan, Ginting, D.M. (2022). Sintesis dan Karakterisasi Pasir Besi Sungai Musi Sumatera Selatan Menggunakan Metode Kopresipitasi, J.Penelitian Sains, 24: 160-165.

Brady, J. E. dan Humiston, G. E. (1980). General Chemistry Principle and Structure, John Wiley & Sons, NewYork.

Anpo, M. (2000). Study Surf Sci, Catal.

Tuas, M.A. (2018). Penurunan Kadar Logam Tembaga dan Besi pada Limbah Cair Industri Perhiasan Emas Menggunakan Karbon Aktif Melalui Proses Presipitasi dan Adsorpsi, (Tesis), Institut Teknologi Sepuluh Nopember, Surabaya.

Soemantojo, R. W., Praswasti, P. D. K., Wulan dan Yulianti. (2010). Presipitasi Bertahap Logam Berat Limbah Cair Industri Pelapisan Logam menggunakan Larutan Kaustik Soda, (Skripsi), Universitas Indonesia, Depok.

McCafferty, E. (2010). Introduction to Corrosion Science, New York, Springer.

Pradipta, A.R., Enriyani, R., Rahmatia, L. dan Utami, A. (2021) Sintesis Nanokomposit Fe3O4/TiO2 Sebagai Fotokatalis yang dapat Diambil Kembali Dalam Fotoreduksi Limbah Ion Perak(I), Warta AKAB, 45:32-39.

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Published

2024-05-30

Issue

Vol. 7 No. 1 (2024)

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Articles

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Copyright (c) 2024 Kristina Ernilia, Imelda Hotmarisi Silalahi, Titin Anita Zaharah

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