Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal Jurnal Rekayasa Proses
Widi Astuti
Balai Penelitian Teknologi Mineral, Lembaga Ilmu Pengetahuan Indonesia Jl. Ir. Sutami Km. 15, Tanjung Bintang, Lampung Selatan, 35361
Chemical Engineering, Chemistry & Bioengineering

Published : 1 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 1 Documents
Search

 1 
Studi kinetika proses atmospheric pressure acid leaching bijih laterit limonit menggunakan larutan asam nitrat konsentrasi rendah Kevin Cleary Wanta; Felisha Hapsari Tanujaya; Ratna Frida Susanti; Himawan Tri Bayu Murti Petrus; Indra Perdana; Widi Astuti
Jurnal Rekayasa Proses Vol 12 No 2 (2018): Volume 12, Number 2, 2018
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.35644

Abstract

Kinetics study of atmospheric pressure acid leaching (APAL) process is indispensable for extractor design in an industrial scale. So far, the kinetic model used for this process is the shrinking core model. In this study, the shrinking core model was evaluated against experimental data for laterite leaching process using a solution of low concentration nitric acid (0.1 M). Variations in temperature and particle size were carried out at 303–358 K and <75–250 microns. Other operating conditions, such as pulp density, stirring speed, and time were kept at 20% w/v, 200 rpm, and 120 minutes, respectively. The model evaluation results showed that the shrinking core model was not suitable for this process because the process controlling stage is not just one stage only.
Co-Authors Felisha Hapsari Tanujaya Himawan Tri Bayu Murti Petrus Indra Perdana Kevin Cleary Wanta Ratna Frida Susanti