Atmospheric Carbon Mineralization in an Industrial-Scale Chrysotile Mining Waste Pile
| Autor: | Xavier Maldague, Marc Constantin, Josée Duchesne, Jean-Michel Lemieux, Micha Horswill, René Therrien, Georges Beaudoin, Ali Nowamooz, J. Christian Dupuis, Richard Fortier, Faïçal Larachi, John Molson |
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| Rok vydání: | 2018 |
| Předmět: |
Carbon Sequestration
010504 meteorology & atmospheric sciences Asbestos Serpentine Carbonation Atmospheric carbon cycle Environmental engineering chemistry.chemical_element Industrial Waste General Chemistry Mineralization (soil science) 010501 environmental sciences Carbon sequestration Carbon Dioxide 01 natural sciences Industrial waste Carbon Mining chemistry.chemical_compound chemistry Carbon dioxide Environmental Chemistry Environmental science Pile 0105 earth and related environmental sciences |
| Zdroj: | Environmental sciencetechnology. 52(14) |
| ISSN: | 1520-5851 |
| Popis: | Magnesium-rich minerals that are abundant in ultramafic mining waste have the potential to be used as a safe and permanent sequestration solution for carbon dioxide (CO2). Our understanding of thermo-hydro-chemical regimes that govern this reaction at an industrial scale, however, has remained an important challenge to its widespread implementation. Through a year-long monitoring experiment performed at a 110 Mt chrysotile waste pile, we have documented the existence of two distinct thermo-hydro-chemical regimes that control the ingress of CO2 and the subsequent mineral carbonation of the waste. The experimental results are supported by a coupled free-air/porous media numerical flow and transport model that provides insights into optimization strategies to increase the efficiency of mineral sequestration at an industrial scale. Although functioning passively under less-than-optimal conditions compared to laboratory-scale experiments, the 110 Mt Thetford Mines pile is nevertheless estimated to be sequester... |
| Databáze: | OpenAIRE |
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