| Title |
An overview of treatment techniques to remove ore flotation reagents from mining wastewater |
| ID_Doc |
9734 |
| Authors |
Falconi, IBA; Botelho, AB Jr; Baltazar, MDG; Espinosa, R; Tenório, JAS |
| Title |
An overview of treatment techniques to remove ore flotation reagents from mining wastewater |
| Year |
2023 |
| Published |
Journal Of Environmental Chemical Engineering, 11.0, 6 |
| DOI |
10.1016/j.jece.2023.111270 |
| Abstract |
Mining activities consume millions of cubic meters of water per year. Flotation, a crucial step in mining operations, uses a significant amount of water, and its treatment can contribute to a closed-loop system. Treatment is required owing to flotation reactants partially degraded and these residual reagents may cause a decline in separation efficiency. An overview of wastewater treatments can help to broaden the amount of water reuse and contribute to the circular economy. This study discusses existing techniques for removing collector surfactants used in mining. It first presents an investigation on wastewater composition and on the main flotation reactants used. Secondly, state-of-the-art technologies for treating wastewater contaminated with flotation collectors are discussed. Lastly, a critical evaluation is provided, highlighting the advantages and drawbacks of different techniques. Surfactants, particularly xanthates and amine derivatives, are identified as the primary contaminants in wastewater. Adsorption, biodegradation, ozonation, Fenton reaction, and photocatalysis, combined with electrochemical treatments, are found to be the most promising technologies. However, further research is needed to analyze by-products and to study real conditions for effective application. Overall, treating mining wastewater contaminated with collectors can contribute to reduce water consumption in the mining industry, benefiting environmental engineering efforts. |
| Author Keywords |
Flotation; Water recycling; Collectors reagents; Biodegradation; Adsorption; Advanced oxidation process |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001110844200001 |
| WoS Category |
Engineering, Environmental; Engineering, Chemical |
| Research Area |
Engineering |
| PDF |
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