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Valerie HEQUET

23
Documents
Identifiants chercheurs

Présentation

After a Ph.D. in Chemistry, Environment and Health and a post-doctoral position in Florida State Univ. in Thalahassee (USA), Valérie Héquet arrived in 2000 at the Ecole des Mines de Nantes at the Department of Energy Systems and Environment. She is currently Professor at IMT Atlantique (previously Ecole des Mines de Nantes). She is a member of the UMR CNRS laboratory GEPEA (Génie des Procédés-Environnement et Agro-alimentaire) where she has in charge the team “Air and Water Treatment and Metrology”. Her main domains of research are on the mass transfers and advanced oxidation mechanisms especially occurring in photocatalytic processes. The aims are the removal of low concentration organic compounds in mixture in indoor atmospheres and the removal of micro-pollutants at low concentrations in aqueous matrix. She is scientific coordinator in several French research projects and she was leader of a work-package of a European Project Clean Water (FP7-ENR-NMP). These project objectives were to evaluate the activity of visible-nano-catalysts under solar irradiation for water detoxification and efficiency towards emerging pollutants. Up to now, she has published more than 40 papers in peer review journals (h-index of 15) and has attended to numerous national and international conferences (more than 80 invited, oral and poster communications).

Domaines de recherche


Publications

laurence-le-coq
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Photocatalytic oxidation of VOCs at ppb level using a closed-loop reactor: The mixture effect

Valérie Hequet , C. Raillard , O. Debono , F. Thevenet , N. Locoge
Applied Catalysis B: Environmental, 2018, 226, pp.473 - 486. ⟨10.1016/J.APCATB.2017.12.041⟩
Article dans une revue hal-01700177v1
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Determination of the Clean Air Delivery Rate (CADR) of Photocatalytic Oxidation (PCO) Purifiers for Indoor Air Pollutants Using a Closed-Loop Reactor. Part II: Experimental Results

Valérie Hequet , Frédéric Batault , Cécile Raillard , Frédéric Thévenet , Laurence Le Coq
Molecules, 2017, Photon-involving Purification of Water and Air, 22 (3), pp.408. ⟨10.3390/molecules22030408⟩
Article dans une revue hal-01487568v1
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How chemical and physical mechanisms enable the influence of the operating conditions in a photocatalytic indoor air treatment device to be modeled

Frédéric Batault , Valérie Hequet , Cécile Raillard , Frédéric Thévenet , Nadine Locoge
Chemical Engineering Journal, 2017, 307, pp.766 - 775. ⟨10.1016/j.cej.2016.08.118⟩
Article dans une revue hal-01423685v1
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VOC ternary mixture effect on ppb level photocatalytic oxidation: Removal kinetic, reaction intermediates and mineralization

O. Debono , Valérie Hequet , Laurence Le Coq , N. Locoge , F. Thevenet
Applied Catalysis B: Environmental, 2017, 218, pp.359 - 369. ⟨10.1016/j.apcatb.2017.06.070⟩
Article dans une revue hal-01700203v1

Acetaldehyde and acetic acid adsorption on TiO2 under dry and humid conditions

F. Batault , F. Thevenet , Valérie Hequet , C. Rillard , Laurence Le Coq
Chemical Engineering Journal, 2015, 264, pp.197-210. ⟨10.1016/j.cej.2014.10.089⟩
Article dans une revue hal-01204737v1

Use of Experimental Designs to Establish a Kinetic Law for a Gas Phase Photocatalytic Process

Cécile Raillard , Audrey Maudhuit , Valérie Hequet , Laurence Le Coq , Jean Sablayrolles
International Journal of Chemical Reactor Engineering, 2014, 12 (1), ⟨10.1515/ijcre-2014-0012⟩
Article dans une revue hal-01206905v1

TiO2 photocatalytic oxidation of indoor VOCs at ppb levels in a multi-pass dynamic reactor: Influence of VOCs mixture on reaction intermediates concentrations

Olivier Debono , Cecile Raillard , Valérie Hequet , Frederic Thevenet , Nadine Locoge
Abstracts of Papers of the American Chemical Society, 2013, 245
Article dans une revue hal-00945339v1

Gas phase photocatalytic oxidation of decane at ppb levels: Removal kinetics, reaction intermediates and carbon mass balance

Olivier Debono , F. Thevenet , P. Gravejat , Valérie Hequet , Cécile Raillard
Journal of Photochemistry and Photobiology A: Chemistry, 2013, 258, pp.17--29. ⟨10.1016/j.jphotochem.2013.02.022⟩
Article dans une revue hal-00945326v1

Adsorption phenomena in photocatalytic reactions: The case of toluene, acetone and heptane

Audrey Maudhuit , Cecile Raillard , Valérie Hequet , Laurence Le Coq , Jean Sablayrolles
Chemical Engineering Journal, 2011, 170 (2-3), pp.464--470. ⟨10.1016/j.cej.2011.02.040⟩
Article dans une revue hal-00945320v1

Toluene photocatalytic oxidation at ppbv levels: Kinetic investigation and carbon balance determination

O. Debono , F. Thevenet , P. Gravejat , Valérie Hequet , C. Raillard
Applied Catalysis B: Environmental, 2011, 106 (3-4), pp.600 - 608. ⟨10.1016/j.apcatb.2011.06.021⟩
Article dans une revue hal-01423680v1
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Étude cinétique, à lʼéchelle de la ppb, des sous-produits formés durant lʼoxydation photocatalytique du toluène

Olivier Debono , Frederic Thevenet , Valérie Hequet , C. Raillard , Laurence Le Coq
Pollution Atmosphérique : climat, santé, société, 2011, 211, pp.305-312
Article dans une revue hal-02363096v1

Photocatalytic oxidation of indoor VOCs at ppb levels: Kinetics of by-products formation

Olivier Debono , Frédéric Thevenet , Valérie Hequet , Cecile Raillard , Laurence Le Coq
Abstracts of Papers of the American Chemical Society, 2010, 239
Article dans une revue hal-00945332v1

Determination of The Clean Air Delivery Rate (CADR) of Photocatalytic Oxidation Purifiers Using a Closed Loop Reactor

Valérie Hequet , Frederic Batault , Cécile Raillard , Frédéric Thévenet , Laurence Le Coq
10th European Meeting on Solar Chemistry and Photocatalysis Environmental Applications (SPEA10), Jun 2018, Alméria, Spain
Communication dans un congrès hal-02352142v1

Determination of the Clean Air Delivery Rate (CADR) of PhotoCatalytic Oxidation purifiers for indoor air pollutants using a closed-loop reactor

Valérie Hequet , Frédéric Batault , Cécile Raillard , Frédéric Thévenet , Laurence Le Coq
5th European Conference on Environmental Applications of Advanced Oxidation Processes (EAAOP 5), Jun 2017, Prague, Czech Republic
Communication dans un congrès hal-02352178v1
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Influence of operating parameters on photocatalytic oxidation treatment efficiency: contact time investigation

Valérie Hequet , Louis Olivier , Vanessa Maroga Mboula , Cécile Raillard , Albert Subrenat
The 14th International Conference on Indoor Air Quality and Climate (Indoorair 2016), Jul 2016, Gand, Belgium
Communication dans un congrès hal-02368485v1

Microorganisms spores inactivation by photocatalysis in air handling unit

Valérie Hequet , P. Bruno , Cecile Hort , Vincent Platel , J.-F. Petit
Indoor Air 2016, the 14th International Conference on Indoor Air Quality and Climate Ghent, Belgium July 3-8 2016, 2016, Ghent, Belgium
Communication dans un congrès hal-02162751v1

Rate law model to better understand the influence of process parameters during toluene photocatalytic degradation in indoor air conditions

C. Raillard , Frederic Batault , Valérie Hequet , N. Locoge , Frédéric Thevenet
PAEES, Procédés Avancés pour l'Environnement L'énergie et la Santé, Oct 2015, Québec, Canada
Communication dans un congrès hal-02368636v1

Indoor air purification by photocatalytic oxidation: Fate of contaminants released in the gas phase and key parameter optimization for the improvement of the process efficiency and safety

Cécile Raillard , Hugo Destaillats , Valérie Hequet , Mohamad Sleiman , Olivier Debono
248th National Meeting of the American-Chemical-Society (ACS), ACS, Aug 2014, San Franscico, CA, United States. pp.839-ENVR
Communication dans un congrès hal-01204892v1

Utilisation d'un réacteur fermé à boucle recirculante pour la détermination des capacités de traitement des épurateurs d'air par photocatalyse

Valérie Hequet , Frédéric Batault , Cécile Raillard , Frédéric Thévenet , Laurence Le Coq
16ème congrès de la Société Française de Génie des Procédés, Jul 2017, Nancy, France
Poster de conférence hal-02352769v1

Determination of the Clean Air Delivery Rate (CADR) of PhotoCatalytic Oxidation purifiers for indoor air pollutants using a closed-loop reactor

Valérie Hequet , Frédéric Batault , Cécile Raillard , Laurence Le Coq , Frédéric Thévenet
10th World Congress of Chemical Engineering (WCCE10), Oct 2017, Barcelone, Spain
Poster de conférence hal-02352156v1

Stand-alone purification unit for indoor air quality improvement: Evaluation of photocatalytic commercial devices

Valérie Hequet , Vanessa Maroga Mboula , Cécile Raillard , Frédéric Thévenet , Laurence Le Coq
SPEA9- 9th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications, Jun 2016, Strasbourg, France
Poster de conférence hal-02368515v1

Study of physico-chemical mechanisms for modeling the influence of operating conditions in a PCO indoor air treatment device

F. Batault , C. Raillard , Valérie Hequet , Frederic Thevenet , Nadine Locoge
SPEA9-9th European Meeting on Solar Chemistry and Photocatalysis: Environmental Applications, Jun 2016, Strasbourg, France
Poster de conférence hal-02368606v1

IMPROVEMENT OF PHOTOCATALYTIC DEVICE GEOMETRY FOR INDOOR AIR TREATMENT

Valérie Hequet , Louis Olivier , Frédéric Batault , Albert Subrenat , Cécile Raillard
ECCE-10, 10th European Congress in Chemical Engineering, Sep 2015, Nice, France
Poster de conférence hal-02368656v1