Leaching characteristics of an iron-rich siltation pond waste and its viability in indirect carbon sequestration

Authors

• Bernard Jomari Razote, De La Salle University, Manila
• Kimmie Mae S. Dela Cerna, De La Salle University, Manila
• Marz Jhon Patricio, University of the Philippines Los Banos
• Ramon Christian Eusebio, University of the Philippines Los Banos
• Richard Alorro, Curtin University
• Arnel B. Beltran, De La Salle University, Manila
• Aileen H. Orbecido, De La Salle University, Manila

College

Gokongwei College of Engineering

Department/Unit

Chemical Engineering

Document Type

Article

Source Title

International Journal of Mining, Reclamation and Environment

Publication Date

2021

Abstract

An iron-rich siltation pond waste from a nickel mining site was used as the starting material for indirect carbonation. Iron-leaching experiments were conducted on the mining waste, using HCl as the leaching agent at varying HCl concentrations, reaction times, and reaction temperatures. It was found that the extraction efficiency of iron (EEI) increased when a more concentrated HCl solution was used and at higher temperatures. Based on the EEI trend over time, a layer of silica gel layer forms around the sample, hindering further iron extraction. A maximum EEI of 93.79% was observed.

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Recommended Citation

Razote, B., Dela Cerna, K. S., Patricio, M., Eusebio, R., Alorro, R., Beltran, A. B., & Orbecido, A. H. (2021). Leaching characteristics of an iron-rich siltation pond waste and its viability in indirect carbon sequestration. International Journal of Mining, Reclamation and Environment Retrieved from https://animorepository.dlsu.edu.ph/faculty_research/15236

Disciplines

Chemical Engineering

Keywords

Carbon sequestration; Leaching; Silt

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