Ifp Energies Nouvelles

Institut Francais Du Pe'trole

Stichting Wageningen Research

Marcel Ropars

Caroline Aymard

Sandra Menir

Rejane Dastillung

Nicolas Lopes Ferreira

Vincent Coupard

Eszter Toth

Remy Marchal

Benjamin Herzhaft

Jean-Christophe Gabelle

Thierry Huard

Helena Gonzalez Penas

Ana Maria Lopez Contreras

Flora Ghisoni

Benjamin Clement

Laurent Neau

Belinda Perez Bibbins

Angelique Bisson

Hadrien-Felix Mate De Gerando

Laetitia Rudant

Réjane Dastillung

Anais Guillaume

The present invention relates to a process for cleaning a solid support of a fermentation reactor for the production of alcohols by fermentation using a sugary fluid, the solid support comprising a polyurethane foam inoculated with a biomass produced by a solvent-producing strain belonging to the genus, the process comprising placing the solid support in contact with a fluid originating from the fermentation must enriched in alcohol and/or acetone and/or an aqueous solution at basic pH.

Method for cleaning a solid support of a fermentation reactor comprising a contaminated polyurethane foam

The present invention relates to mutant bacteria of the genus, CNCM I-4985, CNCM I-4986, CNCM I-4987 and CNCM I-4988, deposited at the Institut Pasteur (CNCM, 25 rue du Docteur Roux, F-75724 PARIS Cedex 15, France) on 27 May 2015, and CNCM I-5027, CNCM I-5028 and CNCM I-5029 deposited at the Institut Pasteur (CNCM, 25 rue du Docteur Roux, F-75724 PARIS Cedex 15, France) on 26 Nov. 2015, which are useful in the fermentation of sugars for the production of isopropanol and butanol.

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The invention relates to a process for the production of alcohols from biomass that comprises a stage in which at least one aqueous internal flow that comprises at least one alcohol that has n carbon atoms, with n between 2 and 5, is recycled, provided that when the alcohol comprises 2 carbon atoms, it is mixed with at least one other alcohol in such a way as to recover a vapor phase effluent that contains alcohols exiting from said pretreatment reactor.

Method for producing alcohols and/or solvents from a biomass, including recirculating an internal flow including alcohols and/or solvents upstream from or within the pretreatment

The present invention describes a process for the production of alcohols and/or solvents from a cellulosic or lignocellulosic substrate, comprising at least the following steps:

Process for the production of alcohols and/or solvents from lignocellulosic biomass with acid recycle of solid residues

Embodiments provided here relate to second generation processes for the production of alcohols or solvents, wherein the lignocellulosic or cellulosic biomass undergoes a pre-treatment before being converted into ethanol after an enzymatic hydrolysis and fermentation. The glucidic polymers of the pre-treated plant material are hydrolysed by cellulases. The alcoholigenic microorganisms used for the ethanolic fermentation principally use hexoses, for example, glucose and mannose. The alcohols of the liquor, with or without separation of the suspended material are extracted by distillation. The stillage, containing pentoses which have not been used, are fermented into an ex-pentose ethanolic liquor and at least a portion of the liquor is recycled upstream of the enzymatic hydrolysis. The enzymatic hydrolysis and the ethanolic fermentation are thus carried out separately or simultaneously in the presence of a portion of the ethanolic liquor, which mixture does not interfere with the performance of the enzymes and microorganisms.

Process for the production of ethanol and solvents from lignocellulosic biomass with recycling of an ethanolic liquor obtained from the fermentation of pentoses

This invention describes a process for the production of second generation alcohols and/or solvents starting from cellulosic or lignocellulosic biomass wherein the lignocellulosic or cellulosic biomass undergoes a pretreatment before being converted into ethanol after an enzymatic hydrolysis and an ethylic fermentation, wherein glucidic polymers of the pretreated plant are hydrolyzed by cellulases; microorganisms that primarily use hexoses and preferably glucose and mannose are used for the ethylic fermentation; wines, with or without separation of materials in suspension are extracted by distillation; pentoses in the vinasses are fermented by a solventogenic microorganism into a butyl wine, and at least one portion of the butyl wine is recycled upstream from enzymatic hydrolysis.

Method for producing ethanol and solvents from lignocellulosic biomass including the recirculation of a butyl wine obtained by fermenting pentoses

The present invention describes a process for the production of alcohol, known as second generation production, from a lignocellulosic substrate, in which a controlled quantity of furfural is produced in situ and which comprises at least the following steps:

In situ production of furfural in a controlled amount in an alcohol production unit from a lignocellulosic biomass

A method for estimating the quantity of COpresent in a geologic formation and a device for implementing the method include the steps of penetrating the formation by a well drilled from the surface contacting formation with a fluid that travels from the formation to the surface sampling a given quantity of return fluid at the surface and transferring it to a cell, ensuring the pH of the quantity of fluid, adding a given quantity of product acidifying the fluid to adjust the pH to a value of less than 4, and measuring the COlevel of the gas in the cell after the acidification step.

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Palaiseau, France

Marcel Ropars