Article Per Year (5 Year)
p-Index From 2021 - 2026
2.386
P-Index
This Author published in this journals
All Journal Chemistry Indonesian Journal of Chemical Research Jurnal GEOSAPTA Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Journal of Metallurgical Engineering and Processing Technology Jurnal Inovasi Pertambangan dan Lingkungan Journal of Geology and Exploration Jurnal Teknologi Kimia Mineral Journal Of Chemical Process Engineering Cognitia : International Engineering Journal
Nurhawaisyah, Sitti Ratmi
Unknown Affiliation
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation

Published : 12 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 12 Documents
Search

 1   2 
Study of The Effect of Leaching Time of Manganese Ore from Pujananting District, Barru Regency Using The Hydrometallurgical Method Nurhawaisyah, Sitti Ratmi; Muhammad Fajrul; Muhammad Idris Juradi; Mubdiana Arifin; Suriyanto Bakri
Journal of Chemical Process Engineering Vol. 10 No. 2 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1584

Abstract

In the mining industry, increasing the content of valuable minerals in the ore levels needs to be done to add economic value. One of the methods to increase copper ore levels is leaching using a sulfuric acid solution. The purpose of this study is to determine the effect of leaching time variations on manganese gain. Lysis was carried out using a sulfuric acid solution of 30 ml per leach, a sample weight of 20 gr for each leach, a grain size of -150 mesh, a stirring speed of 200 rpm with variations in leaching time of 90 minutes, 120 minutes, 150 minutes, 180 minutes. The filtrate results from the leachate were then analyzed using the Atomic Absorption Spectrophotometer (AAS). The results of this study obtained the dissolved Mn at a 90-minute runtime of 14.4045902%, at a 120-minute runtime of 14.4221077%, at a 150-minute runoff time of 14.4173441% and at a 180-minute runoff time of 14.4244638%. Based on the results of the study, the optimal time was obtained the highest dissolved Mn is at 180 minutes of leaching.
Effect of Sulfuric Acid Concentration on the Leaching Behavior of Manganese Ore from Palludda Barru Regency Nurhawaisyah, Sitti Ratmi; Yusuf, Firman Nullah; Murniati, Murniati; Fajriaty, Nur Khaera; Suryanto Bakri
Cognitia : International Engineering Journal Vol. 1 No. 3 (2025): Cognitia : International Engineering Journal
Publisher : Candela Edutech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63288/ciej.v1i3.14

Abstract

Manganese is one of the minerals that constitute various rock formations found throughout Indonesia, particularly in the Sulawesi region. Therefore, research on the processing of manganese ore is essential to ensure its availability can be utilized efficiently and effectively. The objective of this study is to determine the effect of varying H₂SO₄ concentrations and identify the optimum concentration for achieving the highest recovery in manganese ore processing. One method to enhance manganese ore grade is by applying a leaching process using H₂SO₄ solution with concentration variations of 4%, 6%, 8%, and 10%, with a solid mass of 5 grams for each concentration. The leaching process was carried out for 6 hours at each concentration with a stirring speed of 200 rpm. The resulting filtrate was analyzed using Atomic Absorption Spectroscopy (AAS). The leaching results yielded dissolved Mn with 47.600% at 4% concentration, 52.585% at 6%, 50.141% at 8%, and 50.557% at 10%. Based on the results, the highest Mn extraction was achieved at a 6% concentration with a recovery of 52.585% after 6 hours of leaching.
Co-Authors Abdullah, Muh. Agung Alam Budiman Thamsi Andi Fahdli Heriansyah Angga Mulia, Muhammad Ilham Ardana, Muhammad Fabio Arifin, Mubdiana Bakri, Suriyanto Chalik, Citra Aulian Fajriaty, Nur Khaera Febrianty, Vanda Firdaus Firdaus, F. Firman Nullah Yusuf Fitria, Ade Nurul Idris Juradi, Muhammad Manik, Nijushiho Mubarak, Syahran Muhammad Fajrul Mundiana, Arifin Murniati . Nur Asmiani Nurliah Jafar, Nurliah Prasetyawati Umar, Emi Suryanto Bakri Syamsul Bakhri Utami, Hesti Wakila, Muhammad Hardin Zulkarnaen, Dina