Hydrothermal process development for the treatment of asbestos containing waste
| Autor: | Nzogo Metoule, Christ, Delaby, Stéphane, Ferrasse, Jean-Henry, Boutin, Olivier |
|---|---|
| Přispěvatelé: | Centre Scientifique et Technique du Bâtiment (CSTB), Laboratoire de Mécanique, Modélisation et Procédés Propres (M2P2), Centre National de la Recherche Scientifique (CNRS)-École Centrale de Marseille (ECM)-Aix Marseille Université (AMU), Boutin, Olivier, Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | NAXSOS 2018, 6th International Conference on Sustainable Solid Waste Management NAXSOS 2018, 6th International Conference on Sustainable Solid Waste Management, Jun 2018, Naxsos island, Greece |
| Popis: | International audience; In France, the maximum industrial production of asbestos was 150 000t.year-1 between 1973 and 1975. In France, there are currently two types of waste management for waste containing asbestos: landfilling and vitrification by plasma torch. With the storage of thousand tons waste by year, most sites will be soon saturated. Despite its performance, the vitrification process is energetically expensive. Nowadays hydrothermal process is a mature technology used for the treatment of organics wastes, for instance by wet air oxidation. However, its application for mineral waste treatment is not developed, because technical difficulties. Ball and Taylor (1961) realised the first study on chrysotile denaturation by hydrothermal process. Sigon et al (2006) claimed a patent for degradation of asbestos in non-hazardous material by using supercritical water as only reagent. Finally, Anastasiadou et al (2010) established the hydrothermal conversion of chrysotile into forsterite in supercritical condition (temperature 700°C and pressure 2.4MPa) during 1h. Due to the presence of the mineral phase, it is necessary to reach high temperature. The objective is either to degradate the organic phase (glue for instance) and to change the morphologic form as well as the crystalline phase of asbestos. An example is given in equation 1 for chrysolite. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|