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All Journal Jurnal Periodic Jurusan Kimia UNP
Zul Afkar
Jurusan Kimia, Universitas Negeri Padang, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

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Analisis Kandungan Mangan (Mn) dan Tembaga (Cu) dalam Bijih Besi di Daerah Abai Sangir Kabupaten Solok Selatan secara Spektrofotometri Serapan Atom Ana Zulfa Nengsih; Zul Afkar; Bayharti .
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.645 KB) | DOI: 10.24036/p.v2i1.1925

Abstract

A study concerning the analysis of the contain of manganese and copper in iron ore by using Atomic Absorption spectrophotometry. The goal of study is to determine the best solvent and the best volume of solvent that is best with particle size ≤ 63 μm. Manganese and copper analyzes performed using wet methods of destruction, where the destruction done with some variation. The first variation is solvent, that are concentrated HCl and concentrated HCl-HNO3 (3:1) or aquaregia, the second variation is  solvent volume, that are 30 mL, 45mL and 60 mL. The results showed that the highest manganese levels obtained using 45 mL of concentrated HCl solvent is 7.2792% and the highest copper solvent obtained using 45 mL of concentrated HCl is 0.3359%.
Penggunaan HCl Sebagai Leaching Agent Dan Pengaruh Penambahan H2O2 Pada Desulfurisasi Green Coke Mawardi Anwar; Zul Afkar; Dekna Aswita
Jurnal Periodic Jurusan Kimia UNP Vol 2, No 1 (2013)
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (474.084 KB) | DOI: 10.24036/p.v2i1.1926

Abstract

Desulfurization research on green coke of Refinery Unit II Dumai production with 0.44% sulfur content has been done. The purpose of this research is to study the performance of leaching  method on green coke desulfurization and find out the effect of HCl concentration, stirring time and the effect of the addition of H2O2 to the green coke desulfurization. In this study obtained the optimum concentration of HCl as the leaching agent is 9 M. The results showed that the stirring time of 60 minutes and 9 M HCl concentration, levels of sulfur that can be separated is 3.58%. Then conducted leaching at the optimum conditions with the addition of 6% H2O2.  Levels of sulfur that can be separated by the addition of H2O2 is 3.68%. In this research, the addition of H2O2 increased  percent of desulfurization.
Co-Authors Ana Zulfa Nengsih Bayharti . Dekna Aswita Mawardi Anwar