Patents by Inventor Romain Rousset

Romain Rousset has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240026388
    Abstract: The subject of the invention is a process for treating lignocellulosic biomass comprising the following steps: a) conditioning the lignocellulosic biomass, b) washing said particles, c) separating the aqueous solution from the washed biomass particles, d) impregnating said lignocellulosic substrate with an acid liquor, e) carrying out a solid/liquid separation of the impregnated lignocellulosic substrate, f) pretreating said substrate from step e) by cooking, g) carrying out an enzymatic hydrolysis of the pretreated lignocellulosic substrate, h) carrying out a fermentation of the hydrolyzate from step g), and introducing the used aqueous washing solution into a step of said biomass treatment process which is after the pretreatment step f), and/or into an enzyme production step and/or into a step of producing/propagating the microorganisms necessary for steps g) or h).
    Type: Application
    Filed: January 20, 2020
    Publication date: January 25, 2024
    Applicants: INSTITUT NATIONAL DE RECHERCHE POUR L'AGRICULTURE L'ALIMENTATION ET L'ENVIRONNEMENT, IFP Energies Nouvelles
    Inventors: Caroline AYMARD, Severine LOUESDON-JEUNET, Romain ROUSSET, Damien HUDEBINE
  • Patent number: 11299758
    Abstract: The invention relates to a process for treating lignocellulosic biomass by means of an acidic liquor in order to produce “second-generation” (2G) sugary liquors. These sugary liquors may be used to produce other products via a biochemical pathway (e.g. alcohols such as ethanol, butanol or other molecules, for example solvents such as acetone, etc.). This process comprises analysis of the liquid streams withdrawn during the process and adjustment of the composition of the impregnation liquor so as to keep the acidic power of said streams constant.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: April 12, 2022
    Assignees: IFP Energies nouvelles, AGRO INDUSTRIES RECHERCHE ET DEVELOPPEMENT, INSTITUTE NATIONAL DE RECHERCHE POUR L'AGRICULTURE L'ALIMENTATION ET L'ENVIRONNEMENT
    Inventors: Caroline Aymard, Pierre-Antoine Bouillon, Romain Rousset, Olivier Carnnot
  • Patent number: 11274122
    Abstract: The invention relates to a method for separating, from a culture medium, an enzymatic cocktail and the fungus Trichoderma Reesei, the culture medium resulting from enzyme production by the fungus, method in which: said culture medium is subjected, in a period of no longer than 30 h from the halting of production, to a separation on a filter press lined with a fabric having a porosity of 3-20 ?m, so as to obtain a filtrate having a corrected optical density OD at 600 nm of less than 2.5; and the liquid phase obtained is subjected to tangenital micro-filtration on a ceramic membrane having a cut-off limit of 0.5 to 1.4 ?m, so that the corrected OD at 600 nm does not exceed 0.1.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: March 15, 2022
    Assignees: IFP Energies Nouvelles, Institut National De La Recherche Agronomique
    Inventors: Mohamed Fadhel Ben Chaabane, Romain Rousset
  • Patent number: 11236403
    Abstract: The invention concerns a continuous method for treating a lignocellulosic biomass before enzymatic hydrolysis, said method comprising a transfer of crushed then pressed biomass to a step of impregnation by an acid liquor, the impregnated biomass dripping over the area containing the impregnation liquor, then the resulting wet biomass is pressed and sent to a steam explosion step. The impregnation liquor is prepared in a dedicated area from the used liquor from the dripping operation and/or that from the pressing operation, prior to the explosion step. The invention also concerns the facility for implementing the method.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: February 1, 2022
    Assignees: INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, IFP Energies nouvelles, AGRO INDUSTRIES RECHERCHE ET DEVELOPPEMENT
    Inventors: Damien Hudebine, Romain Rousset, Olivier Carnnot
  • Publication number: 20210087590
    Abstract: The invention relates to a process for treating lignocellulosic biomass by means of an acidic liquor in order to produce “second-generation” (2G) sugary liquors. These sugary liquors may be used to produce other products via a biochemical pathway (e.g. alcohols such as ethanol, butanol or other molecules, for example solvents such as acetone, etc.). This process comprises analysis of the liquid streams withdrawn during the process and adjustment of the composition of the impregnation liquor so as to keep the acidic power of said streams constant.
    Type: Application
    Filed: December 4, 2018
    Publication date: March 25, 2021
    Applicants: IFP Energies nouvelles, AGRO INDUSTRIES RECHERCHE ET DEVELOPPEMENT, INSTITUTE NATIONAL DE RECHERCHE POUR L'AGRICULTURE L'ALIMENTATION ET L'ENVIRONNEMENT
    Inventors: Caroline AYMARD, Pierre-Antoine BOUILLON, Romain ROUSSET, Olivier CARNNOT
  • Patent number: 10865426
    Abstract: The present invention relates to a sequentially fed process for enzymatic hydrolysis in which, under agitation, a pre-treated lignocellulosic substrate is brought into contact with water and with enzymes in a reactor, said process being characterised in that the sequential addition to the reactor of the pre-treated lignocellulosic substrate is carried out increasingly spread out over time, in order to obtain a predetermined final content of dry matter.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: December 15, 2020
    Assignee: IFP Energies Nouvelles
    Inventors: Federico Battista, Romain Rousset, Melanie Gomez Almendros
  • Publication number: 20200031864
    Abstract: The invention relates to a method for separating, from a culture medium, an enzymatic cocktail and the fungus Trichoderma reesei, the culture medium resulting from enzyme production by the fungus, method in which: said culture medium is subjected, in a period of no longer than 30 h from the halting of production, to a separation on a filter press lined with a fabric having a porosity of 3-20 ?m, so as to obtain a filtrate having a corrected optical density OD at 600 nm of less than 2.5; and the liquid phase obtained is subjected to tangenital micro-filtration on a ceramic membrane having a cut-off limit of 0.5 to 1.4 ?m, so that the corrected OD at 600 nm does not exceed 0.1.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 30, 2020
    Applicants: IFP Energies Nouvelles, Institut National De La Recherche Agronomique
    Inventors: Mohamed Fadhel BEN CHAABANE, Romain ROUSSET
  • Publication number: 20200002482
    Abstract: The invention relates to a process for treating a lignocellulosic biomass, with: a. Pretreatment of the biomass via at least one cooking or steam explosion operation, so as to obtain a pretreated substrate, b. Liquid/solid separation on at least a portion of the pretreated substrate, comprising two successive substeps: an upstream substep b1 of contacting the solid/liquid mixture performed with a continuous mixer (M) using a mixing fluid, a downstream sub-step b2 of extraction/washing performed with a continuous filter, using a washing fluid, to obtain a solid phase enriched in solid and a plurality of liquid phases enriched in liquid, with at least partial recycling of a liquid phase extracted from the filter at the inlet of the mixer as a mixing fluid.
    Type: Application
    Filed: June 25, 2019
    Publication date: January 2, 2020
    Applicants: Institut National De La Recherche Agronomique, IFP Energies Nouvelles, Agro Industries Recherche Et Developpement
    Inventors: Caroline AYMARD, Romain ROUSSET, Larissa PEROTTA, Emilia KNOSPE
  • Publication number: 20190241984
    Abstract: The invention concerns a continuous method for treating a lignocellulosic biomass before enzymatic hydrolysis, said method comprising a transfer of crushed then pressed biomass to a step of impregnation by an acid liquor, the impregnated biomass dripping over the area containing the impregnation liquor, then the resulting wet biomass is pressed and sent to a steam explosion step. The impregnation liquor is prepared in a dedicated area from the used liquor from the dripping operation and/or that from the pressing operation, prior to the explosion step. The invention also concerns the facility for implementing the method.
    Type: Application
    Filed: July 11, 2017
    Publication date: August 8, 2019
    Applicants: INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, IFP Energies nouvelles, AGRO INDUSTRIES RECHERCHE ET DEVELOPPEMENT
    Inventors: Damien HUDEBINE, Romain ROUSSET, Olivier CARNNOT
  • Publication number: 20190093133
    Abstract: The present invention relates to a sequentially fed process for enzymatic hydrolysis in which, under agitation, a pre-treated lignocellulosic substrate is brought into contact with water and with enzymes in a reactor, said process being characterised in that the sequential addition to the reactor of the pre-treated lignocellulosic substrate is carried out increasingly spread out over time, in order to obtain a predetermined final content of dry matter.
    Type: Application
    Filed: September 27, 2018
    Publication date: March 28, 2019
    Applicant: IFP Energies Nouvelles
    Inventors: Federico BATTISTA, Romain ROUSSET, Melanie GOMEZ ALMENDROS
  • Patent number: 9593355
    Abstract: The present invention concerns a production of liquefied lignocellulosic substrate by enzymatic reaction. 10% to 40% by weight dry matter of pre-treated lignocellulosic substrate is contacted, with water and enzymes at 0.1 to 60 mg of enzymes per gram of cellulose for a period of 1 to 24 hours. Over time, at least the value of one of the rheological characteristics of the reaction medium is measured. If a reduction of the value is detected over time, the following step a) is carried out: a) the feeding flow rate of pre-treated lignocellulosic substrate is increased, with or without modification of the flow rate of enzymes and/or water; If an increase of the value is detected over time, a step b) is carried out: b) the feeding flow rate of water and/or enzymes is increased, with or without modification of the flow rate of pre-treated lignocellulosic substrate.
    Type: Grant
    Filed: November 29, 2012
    Date of Patent: March 14, 2017
    Assignee: IFP ENERGIES NOUVELLES
    Inventors: Sylvain Louret, Romain Rousset
  • Publication number: 20140377812
    Abstract: The present invention concerns a production of liquefied lignocellulosic substrate by enzymatic reaction. 10% to 40% by weight dry matter of pre-treated lignocellulosic substrate is contacted, with water and enzymes at 0.1 to 60 mg of enzymes per gram of cellulose for a period of 1 to 24 hours. Over time, at least the value of one of the rheological characteristics of the reaction medium is measured. If a reduction of the value is detected over time, the following step a) is carried out: a) the feeding flow rate of pre-treated lignocellulosic substrate is increased, with or without modification of the flow rate of enzymes and/or water; If an increase of the value is detected over time, a step b) is carried out: b) the feeding flow rate of water and/or enzymes is increased, with or without modification of the flow rate of pre-treated lignocellulosic substrate.
    Type: Application
    Filed: November 29, 2012
    Publication date: December 25, 2014
    Applicant: IFP ENERGIES NOUVELLES
    Inventors: Sylvain Louret, Romain Rousset
  • Patent number: 8519171
    Abstract: The present invention describes a method of producing fatty acid alkyl esters and glycerin implementing, in a reaction section, a set of transesterification reactions between a vegetable or animal oil and an aliphatic monoalcohol, and using a heterogeneous solid catalyst, comprising: a) a glycerin phase introduction stage, b) an excess alcohol evaporation stage, and c) a glycerin phase decantation stage. The supernatant ester phase obtained after decantation is then optionally sent to a coalescer, also allowing separation of the glycerin, then to a purification stage by adsorption on solids. This improved method prevents microemulsion formation.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: August 27, 2013
    Assignee: IFP Energies nouvelles
    Inventors: Abdelhakim Koudil, Romain Rousset, Laurent Bournay, Vincent Coupard
  • Patent number: 8350071
    Abstract: The present invention describes a method of producing fatty acid alkyl esters and glycerin implementing, in a reaction section, a set of transesterification reactions between a vegetable or animal oil and an aliphatic monoalcohol, and using a heterogeneous solid catalyst, comprising: a) a stage of recontacting the effluent coming from the reaction section, and separated from the excess alcohol, with a glycerin phase, b) a stage of mixing said effluent with said glycerin phase, and c) a glycerin phase decantation stage. The supernatent ester phase obtained after decantation is then optionally sent to a coalescer, also allowing separation of the glycerin, then to a purification stage by adsorption on solids.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: January 8, 2013
    Assignee: IFP Energies nouvelles
    Inventors: Abdelhakim Koudil, Romain Rousset, Laurent Bournay, Franck Gaviot-Blanc
  • Publication number: 20100292493
    Abstract: The present invention describes a method of producing fatty acid alkyl esters and glycerin implementing, in a reaction section, a set of transesterification reactions between a vegetable or animal oil and an aliphatic monoalcohol, and using a heterogeneous solid catalyst, comprising: a) a stage of recontacting the effluent coming from the reaction section, and separated from the excess alcohol, with a glycerin phase, b) a stage of mixing said effluent with said glycerin phase, and c) a glycerin phase decantation stage. The supernatent ester phase obtained after decantation is then optionally sent to a coalescer, also allowing separation of the glycerin, then to a purification stage by adsorption on solids.
    Type: Application
    Filed: June 9, 2008
    Publication date: November 18, 2010
    Applicant: IFP
    Inventors: Abdelhakim Koudil, Romain Rousset, Laurent Bournay, Franck Gaviot-Blanc
  • Publication number: 20100286436
    Abstract: The present invention describes a method of producing fatty acid alkyl esters and glycerin implementing, in a reaction section, a set of transesterification reactions between a vegetable or animal oil and an aliphatic monoalcohol, and using a heterogeneous solid catalyst, comprising: a) a glycerin phase introduction stage, b) an excess alcohol evaporation stage, and c) a glycerin phase decantation stage. The supernatant ester phase obtained after decantation is then optionally sent to a coalescer, also allowing separation of the glycerin, then to a purification stage by adsorption on solids. This improved method prevents microemulsion formation.
    Type: Application
    Filed: June 9, 2008
    Publication date: November 11, 2010
    Applicant: IFP
    Inventors: Abdelhakim Koudil, Romain Rousset, Laurent Bournay, Vincent Coupard