| Title | Challenges and avenues for acid mine drainage treatment, beneficiation, and valorisation in circular economy: A review |
|---|---|
| ID_Doc | 28997 |
| Authors | Masindi, V; Foteinis, S; Renforth, P; Ndiritu, J; Maree, JP; Tekere, M; Chatzisymeon, E |
| Title | Challenges and avenues for acid mine drainage treatment, beneficiation, and valorisation in circular economy: A review |
| Year | 2022 |
| Published | |
| Abstract | Mining activities are notorious for their environmental impact, with acid mine drainage (AMD) being among the most significant issues. Specifically, AMD has recently been a topical issue of prime concern, primarily due to the magnitude of its environmental, ecotoxicological, and socioeconomic impacts. AMD originates from both active and abandoned mines (primarily gold and coal) and is encountered in Canada, China, Russia, South Africa, USA, and other countries with strong mining industry. Owing to its acidity, AMD contains elevated levels of dissolved (toxic) metals, metalloids, rare-earth elements, radionuclides, and sulfates. Practical and cost-effective solutions to prevent its formation are still pending, while for its treatment active (driven by frequent input of chemicals and energy) or passive (based on oxidation/reduction) technologies are typically employed with the first being more efficient in contaminants removal, however, at the expense of process complexity, cost, and materials and energy consumption. More recently, and under the circular economy concept, hybrid (combination of active and passive technologies) and particularly integrated (sequential or stepwise treatment) systems have been explored for AMD beneficiation and valorisation. These systems are costly to install and operate but are cleaner production systems since they can effectively prevent pollution and can be used for closed-loop and sustainable AMD management (e.g., zero liquid discharge (ZLD) systems). Herein, the body of knowledge on AMD treatment, beneficiation (metals/minerals recovery), valorisation (water reclamation), and life cycle assessment (LCA) is comprehensively reviewed and discussed, with focus placed on circular economy. Future research directions to introduce reuse, recycle, and resource recovery paradigms in wastewater treatment and to inspire innovation in valorising this toxic and hazardous effluent are also provided. Overall, AMD beneficiation and valorisation appears promising since the reclaimed water and the recovered minerals/metals could offset treatment costs and environmental impacts. However, the main challenges include high-cost, complexity, co-contamination in the recovered minerals, and the generation of a higly heterogeneous and mineralised sludge. |
| https://doi.org/10.1016/j.ecoleng.2022.106740 |
Similar Articles
| ID | Score | Article |
|---|---|---|
22670
|
Shingwenyana, R; Shabalala, AN; Mbhele, R; Masindi, V Techno-Economic Analysis of the Reclamation of Drinking Water and Valuable Minerals from Acid Mine Drainage(2021)Minerals, 11.0, 12 | |
| 16760
|
Akinwekomi, V; Maree, JP; Masindi, V; Zvinowanda, C; Osman, MS; Foteinis, S; Mpenyana-Monyatsi, L; Chatzisymeon, E Beneficiation of acid mine drainage (AMD): A viable option for the synthesis of goethite, hematite, magnetite, and gypsum - Gearing towards a circular economy concept(2020) | |
| 707
|
Singh, S; Sukla, LB; Goyal, SK Mine waste & circular economy(2020) | |
| 5535
|
Masindi, V; Mbhele, R; Foteinis, S Sustainable Co-Management of Acid Mine Drainage with Struvite Synthesis Effluent: Pragmatic Synergies in Circular Economy(2023)Environments, 10, 4 | |
| 27339
|
López, J; Gibert, O; Cortina, JL Integration of membrane technologies to enhance the sustainability in the treatment of metal-containing acidic liquid wastes. An overview(2021) | |
| 6580
|
Wibowo, YG; Taher, T; Khairurrijal, K; Ramadan, BS; Safitri, H; Sudibyo, S; Yuliansyah, AT; Petrus, HTBM Recent advances in the adsorptive removal of heavy metals from acid mine drainage by conventional and novel materials: A review(2024) | |
| 12298
|
Mothetha, M; Kebede, K; Masindi, V; Msagati, T EMPLOYMENT OF Ca2+-RICH MgO NANOPARTICLES FOR EFFECTIVE TREATMENT OF REAL ACID MINE DRAINAGE(2023)Environment Protection Engineering, 49.0, 1 | |
| 15128
|
Sanchez-Ramos, D; Garrido, FJLB; Hernández, IA; Romero, LR; Camacho, JV; Fernández-Morales, FJ Sustainable use of wastes as reactive material in permeable reactive barrier for remediation of acid mine drainage: Batch and continuous studies(2023) | |
| 15675
|
Kotte-Hewa, DJ; Durce, D; Salah, S; Cánovas, CR; Smolders, E Remediation of acid mine drainage and immobilization of rare earth elements: Comparison between natural and residual alkaline materials(2023) | |
| 26798
|
Bonnail, E; Vera, S; Blasco, J; Conradi, M; DelValls, TA Metal Pollution and Mining in the Iberian Pyrite Belt: New Remediation Technologies to Improve the Ecosystem Services of the River Basins(2023)Water, 15, 7 |