Influence of multiphasic systems on salt(s) solubility in supercritical water: the case of NaCl and NaCl-Na2SO4
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| hal.structure.identifier | Agence de l'Environnement et de la Maîtrise de l'Energie [ADEME] | |
| hal.structure.identifier | Institut de Mécanique et d'Ingénierie de Bordeaux [I2M] | |
| dc.contributor.author | VOISIN, Thomas | |
| hal.structure.identifier | Institut de Mécanique et d'Ingénierie de Bordeaux [I2M] | |
| dc.contributor.author | ERRIGUIBLE, Arnaud | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | AYMONIER, Cyril | |
| dc.date.issued | 2019-10 | |
| dc.identifier.issn | 0896-8446 | |
| dc.description.abstractEn | Supercritical water oxidation processes (SCWO) have been developed as an alternative technology to treat toxic and/or complex chemical wastes with a very good efficiency. However, one main limitation of the SCWO process comes from the precipitation of inorganic compounds. When dealing with supercritical water conditions (T ≥ 374 °C, p ≥ 22.1 MPa), the polarity of water drops and inorganics, such as salts, are no longer soluble. This precipitation phenomenon results in a solid salt deposition in the reactor, which can lead to clogging and interruption of the continuous process. Considering a specific salt, beside its intrinsic solubility in supercritical water, the presence of other salts or other compounds in the media can modify its precipitation behaviour. With the use of a specific experimental set-up, we propose in the present work to study the solubility of NaCl (type I salt) in supercritical water, and the influence of its phase diagram on its precipitation behaviour as well as on the solubility of a second salt, Na2SO4 (type II salt). The complex and dynamic aspect of NaCl precipitation has been studied through the use of a continuous solubility measurement set-up, revealing unexpected results. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | supercritical water | |
| dc.subject.en | salt precipitation | |
| dc.subject.en | multiphasic systems | |
| dc.subject.en | solubility | |
| dc.subject.en | SCWO | |
| dc.title.en | Influence of multiphasic systems on salt(s) solubility in supercritical water: the case of NaCl and NaCl-Na2SO4 | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.supflu.2019.104567 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Journal of Supercritical Fluids | |
| bordeaux.page | 104567 (6 p.) | |
| bordeaux.volume | 152 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02190368 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02190368v1 | |
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