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Greening pathways for synthetic talc production based on the supercritical hydrothermal flow process

hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorGLOGIC, Edis
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
hal.structure.identifierImerys Talc Europe
dc.contributor.authorCLAVERIE, Marie
hal.structure.identifierDepartment of Mechanical Engineering
dc.contributor.authorJUBAYED, Md
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorMUSUMECI, Valentina
hal.structure.identifierImerys Talc Europe
dc.contributor.authorCARÊME, Christel
hal.structure.identifierGéosciences Environnement Toulouse [GET]
dc.contributor.authorMARTIN, François
hal.structure.identifierInstitut des Sciences Moléculaires [ISM]
dc.contributor.authorSONNEMANN, Guido
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorAYMONIER, Cyril
dc.date.issued2021
dc.description.abstractEnRecent efforts in chemistry have led to development of a fast and continuous process for the production of synthetic talc in a supercritical hydrothermal reactor. This attractive process compatible with industrial requirements leads to advantageous physicochemical characteristics including submicrometer size, hydrophilicity, and high chemical and mineralogical purity. In addition, the high speed of the process and moderate reaction conditions have potential advantages from a viewpoint of the impacts on the environment. To verify environmental advantages and seize further opportunities to improve environmental performance, the current study evaluates the new process using the life cycle assessment (LCA) methodology. A cradle-to-gate assessment considers the production of synthetic talc from different magnesium and reagent acid precursors at different concentrations. The findings suggest high impacts of precursors (65–94%, depending on their concentration) and low impacts of process energy and water. Substituting magnesium acetate with magnesium sulfate could reduce greenhouse gases from 4.8 to 2.6 kgCO2 and cumulative energy use from 86 to 34 MJ per 1 kg of synthetic talc. Discussion draws on previous LCA studies on the supercritical hydrothermal process and applications of synthetic talc considering its environmental performance and characteristics in comparison to the conventional (natural) talc.
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.subject.enlife cycle assessment
dc.subject.ensynthetic talc
dc.subject.ensupercritical hydrothermal flow synthesis
dc.subject.enprecursor concentration
dc.subject.enex ante LCA
dc.title.enGreening pathways for synthetic talc production based on the supercritical hydrothermal flow process
dc.typeArticle de revue
dc.identifier.doi10.1021/acssuschemeng.1c05120
dc.subject.halChimie/Matériaux
bordeaux.journalACS Sustainable Chemistry & Engineering
bordeaux.page16597–16605
bordeaux.volume9
bordeaux.issue49
bordeaux.peerReviewedoui
hal.identifierhal-03455493
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03455493v1
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