Next Article in Journal
Hot Ductility Loss in a Fe-Ni-Based Superalloy
Next Article in Special Issue
The Eh-pH Diagram and Its Advances
Previous Article in Journal
Preparation and Characteristics of γ-Fe2O3/Polyaniline-Curcumin Composites
Previous Article in Special Issue
Palladium(II) Recovery from Hydrochloric Acid Solutions by N,N′-Dimethyl-N,N′-Dibutylthiodiglycolamide
Article Menu

Export Article

Open AccessArticle
Metals 2015, 5(4), 2413-2427;

Direct Aqueous Mineral Carbonation of Waste Slate Using Ammonium Salt Solutions

Korea Institute of Geoscience and Mineral Resources, Daejeon 34132, Korea
Department of Earth and Environmental Sciences, Korea University, Seoul 02841, Korea
Author to whom correspondence should be addressed.
Academic Editors: Suresh Bhargava, Mark Pownceby and Rahul Ram
Received: 18 October 2015 / Revised: 9 December 2015 / Accepted: 15 December 2015 / Published: 18 December 2015
(This article belongs to the Special Issue Hydrometallurgy)
View Full-Text   |   Download PDF [1156 KB, uploaded 18 December 2015]   |  


The carbonation of asbestos-containing waste slate using a direct aqueous mineral carbonation method was evaluated. Leaching and carbonation tests were conducted on asbestos-containing waste slate using ammonium salt (CH3COONH4, NH4NO3, and NH4HSO4) solutions at various concentrations. The CH3COONH4 solution had the highest Ca-leaching efficiency (17%–35%) and the NH4HSO4 solution had the highest Mg-leaching efficiency (7%–24%) at various solid dosages and solvent concentrations. The CaCO3 content of the reacted materials based on thermogravimetric analysis (TGA) was approximately 10%–17% higher than that of the as-received material for the 1 M CH3COONH4 and the 1 M NH4HSO4 solutions. The carbonates were precipitated on the surface of chrysotile, which was contained in the waste slate reacted with CO2. These results imply that CO2 can be sequestered by a direct aqueous mineral carbonation using waste slate. View Full-Text
Keywords: CO2 sequestration; mineral carbonation; waste slate; ammonium salts; asbestos CO2 sequestration; mineral carbonation; waste slate; ammonium salts; asbestos

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Jo, H.; Jo, H.Y.; Rha, S.; Lee, P.-K. Direct Aqueous Mineral Carbonation of Waste Slate Using Ammonium Salt Solutions. Metals 2015, 5, 2413-2427.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top