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Investigation of the precipitation of Na2SO4 in supercritical water

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierINNOVEOX
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
hal.structure.identifierAgence de l'Environnement et de la Maîtrise de l'Energie [ADEME]
dc.contributor.authorVOISIN, Thomas
hal.structure.identifierInstitut de Mécanique et d'Ingénierie de Bordeaux [I2M]
dc.contributor.authorERRIGUIBLE, Arnaud
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPHILIPPOT, Gilles
hal.structure.identifierINNOVEOX
dc.contributor.authorBALLENGHIEN, David
hal.structure.identifierINNOVEOX
dc.contributor.authorMATEOS, David
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorCANSELL, François
hal.structure.identifierCenter for Materials Crystallography (CMC), Interdisciplinary Nanoscience Center (iNANO)
dc.contributor.authorIVERSEN, Bo Brummerstedt
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorAYMONIER, Cyril
dc.date.accessioned2021-05-14T09:50:24Z
dc.date.available2021-05-14T09:50:24Z
dc.date.issued2017-12
dc.identifier.issn0009-2509
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/77282
dc.description.abstractEnSuperCritical Water Oxidation process (SCWO) is a promising technology for treating toxic and/or complex chemical wastes with very good efficiency. Above its critical point (374 °C, 22.1 MPa), water exhibits particular properties and organic compounds can be easily dissolved and degraded with the addition of oxidizing agents. But these interesting properties imply a main drawback regarding inorganic compounds. Highly soluble at ambient temperature in water, these inorganics (such as salts) are no longer soluble in supercritical water and precipitate into solids, creating plugs in SCWO processes. Although this precipitation phenomenon is well known as a limiting factor for SCWO process, it is still not well understood. This work intends to investigate the precipitation phenomenon with a new methodology. A common salt, disodium sulfate (Na2SO4), is taken as a reference for the study. Na2SO4 solubility in sub- and supercritical water is determined on a wide temperature range using a continuous set-up. Crystallite sizes formed after precipitation are measured with in situ synchrotron wide angle X-ray scattering (WAXS). Combining these experimental results, a numerical modeling of the precipitation in supercritical conditions is performed by taking into account all the implied physical phenomena: thermodynamic, hydrodynamic and nucleation & growth.
dc.language.isoen
dc.publisherElsevier
dc.subject.enSupercritical water
dc.subject.enSupercritical water oxidation
dc.subject.enSalt precipitation
dc.subject.enIn situ analysis
dc.subject.enNumerical modeling
dc.title.enInvestigation of the precipitation of Na2SO4 in supercritical water
dc.typeArticle de revue
dc.identifier.doi10.1016/j.ces.2017.09.009
dc.subject.halChimie/Matériaux
bordeaux.journalChemical Engineering Science
bordeaux.page268-276
bordeaux.volume174
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifierhal-01593815
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01593815v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Chemical%20Engineering%20Science&rft.date=2017-12&rft.volume=174&rft.spage=268-276&rft.epage=268-276&rft.eissn=0009-2509&rft.issn=0009-2509&rft.au=VOISIN,%20Thomas&ERRIGUIBLE,%20Arnaud&PHILIPPOT,%20Gilles&BALLENGHIEN,%20David&MATEOS,%20David&rft.genre=article


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