Compagnie Industrielle de la Matiere Vegetale CIMV

Levallois-Perret, France

Compagnie Industrielle de la Matiere Vegetale CIMV

Levallois-Perret, France
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The invention proposes a process for producing ethanol, comprising steps of pre-treatment of the lignocellulosic vegetable raw material, comprising the steps consisting in destructuring the lignocellulosic vegetable raw material, then in separating, on the one hand, the cellulose (C6)capable of then being hydrolysed (and fermented for the production of ethanol) and, on the other hand, the hemicelluloses capable of then being hydrolysed and the lignins, characterized in that the hydrolysis of the cellulose and of the hemicelluloses is then carried out in a sequenced manner according to the following steps consisting in: -i) beginning the enzymatic hydrolysis of the cellulose by means of at least one enzyme for a first period with a view to obtaining an intermediate hydrolysate; -ii) adding hemicelluloses to said intermediate hydrolysate; -iii) continuing the enzymatic hydrolysis of the mixture until a final hydrolysate is obtained at the end of a total period of enzymatic hydrolysis.


Papadopoulou E.,CHIMAR HELLAS S.A. | Kountouras S.,CHIMAR HELLAS S.A. | Chrissafis K.,Aristotle University of Thessaloniki | Kirpluks M.,Latvian State Institute of Wood Chemistry | And 3 more authors.
Tappi Journal | Year: 2017

Scientists today are intensively seeking alternatives to petrochemical materials. Among others, lig-nin is a promising candidate because it is available in large quantities while its chemical structure makes its use possible in a variety of chemical reactions. Lignin, received by numerous methods from various feedstocks, is a promising material for the synthesis of many products like active carbon, thermosetting and thermoplastic polymers, surfactants, phenolic chemicals, etc. In this paper, the potential of using Biolignin - a trademarked organosolv lignin from straw prepared by Compagnie Industrielle de la Matière Végétale (CIMV; Neuilly-sur-Seine, France) - in the synthesis of phenol-formaldehyde (PF) resins was studied by CHIMAR HELLAS S.A. (Kalamaria, Greece). Before its use, Biolignin was further purified and subjected to mechanical treatment for the reduction of its particle size in order to increase its reactivity. The effectiveness of the treatment was verified by atomic force microscopy (AFM) measurements that were carried out by SYNPO Company (Pardubice, Czech Republic). Resol phenolic resins were prepared with various substitution levels of phenol up to 80%. However, their synthesis process was smooth only up to the substitution level of 50%. The properties of the resins were determined with typical lab analysis. Their thermal behavior was studied with differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) measurements that were conducted by the Aristotle University of Thessaloniki in Greece. Their bonding ability was evaluated by CHIMAR HELLAS via their application in the production of plywood panels of three layers that were prepared following a simulation of the industrial process. The panels were tested for their properties according to the relevant European standards, while their performance relative to fire was studied with cone calorimetry measurements that were performed by the Latvian State Institute of Wood Chemistry (LIWC; Riga, Latvia). All results were compared with that of a typical PF resin. It was found that the particle size of lignin affects the performance of the resins, while lignin-based PF resins are suitable for the production of plywood panels and have somewhat better performance relative to fire than typical PF resins. This study has been performed within the framework of the European project BIOCORE (biocommodity refinery for biofuels, chemical intermediates, polymers and materials).


Tachon N.,Compagnie Industrielle de la Matiere Vegetale CIMV | Tachon N.,ENSIACET | Jahouh F.,Memorial University of Newfoundland | Delmas M.,Compagnie Industrielle de la Matiere Vegetale CIMV | And 3 more authors.
Rapid Communications in Mass Spectrometry | Year: 2011

We have identified compounds obtained from the SARA fractions of bitumen by using atmospheric pressure photoionization mass spectrometry and low-energy collision tandem mass spectrometric analyses with a QqToF-MS/MS hybrid instrument. The identified compounds were isolated from the maltene saturated oil and the aromatic fractions of the SARA components of a bitumen. The QqToF instrument had sufficient mass resolution to provide accurate molecular weight information and to enhance the tandem mass spectrometry results. The APPI-QqToF-MS analysis of the separated compounds showed a series of protonated molecules [M+H]+ and molecular ions [M] +■ of the same mass but having different chemical structures, in the maltene saturated oil and the aromatic SARA fractions. These isobaric ions were a molecular ion [M 2] +■ at m/z 418.2787 and a protonated molecule [M5+H] + at m/z 287.1625 in the saturated oil fraction, and molecular ions [M 6] +■ at m/z 418.1584 and [M 7] +■ at m/z 287.1285 in the aromatic fraction. The identification of this series of chemical compounds was achieved by performing CID-MS/MS analyses of the molecular ions [M] +■ ([M 1] +■ at m/z 446. 2980, [M 2] +■ at m/z 418.2787, [M 3] +■ at m/z 360.3350 and [M 4] +■ at m/z 346.2095) in the saturated oil fraction and of the [M 5+H] + ion at m/z 287.1625 also in the saturated oil fraction. The observed CID-MS/MS fragmentation differences were explained by proposed different breakdown processes of the precursor ions. The presented tandem mass spectrometric study shows the capability of MS/MS experiments to differentiate between different classes of chemical compounds of the SARA components of bitumen and to explain the reasons for the observed mass spectrometric differences. However, greater mass resolution than that provided by the QqToF-MS/MS instrument would be required for the analysis of the asphaltene fraction of bitumen. Copyright © 2011 John Wiley & Sons, Ltd.


Delmas G.-H.,Compagnie Industrielle de la Matiere Vegetale CIMV | Delmas G.-H.,ENSIACET | Benjelloun-Mlayah B.,Compagnie Industrielle de la Matiere Vegetale CIMV | Bigot Y.L.,ENSIACET | And 2 more authors.
Journal of Applied Polymer Science | Year: 2011

Wheat straw lignin was extracted by the CIMV process using organic acid media at pilot plant scale. The product was analyzed by gel permeation chromatography (GPC), 1H and 13C NMR spectroscopy, infrared attenuated total reflectance-Fourier transform infrared analysis (ATR-FTIR), and gas chromatography (GC) to clarify its structure and functionality. In most cases, lignin was esterified before analysis. Control of the esterification was conducted via ATR-FTIR and NMR. GC analysis was used to quantify total hydroxyl group of lignin by saponification of propionylated lignin and was also used to quantify phenolic hydroxyl groups of lignin by aminolysis of propionylated lignin. Acetylated lignin was analyzed by GPC. Carboxylic group of lignin was determined by pH metric titration. Lignin extracted from the CIMV process was observed as a low molecular weight polymer with a low polydispersity index and high free hydroxyl content. The potential of lignin as a natural polyphenol was confirmed by the analytical results obtained. © 2011 Wiley Periodicals, Inc.


Delmas G.-H.,Compagnie Industrielle de la Matiere Vegetale CIMV | Delmas G.-H.,ENSIACET | Benjelloun-Mlayah B.,Compagnie Industrielle de la Matiere Vegetale CIMV | Bigot Y.L.,ENSIACET | And 2 more authors.
Journal of Applied Polymer Science | Year: 2013

Wheat straw Biolignin TM was used as a substitute of bisphenol-A in epoxy resin. Synthesis was carried out in alkaline aqueous media using polyethyleneglycol diglycidyl ether (PEGDGE) as epoxide agent. Structural study of Biolignin TM and PEGDGE was performed by solid-state 13C NMR and gel permeation chromatography, respectively, before epoxy resin synthesis. Biolignin TM based epoxy resins were obtained with different ratios of Biolignin TM: PEGDGE and their structures were analyzed by solid-state 13C NMR. The crosslinking of PEGDGE with Biolignin TM was highlighted in this study. Properties of Biolignin TM based epoxy resins were analyzed by differential scanning calorimetry and dynamic load thermomechanical analysis as well as compared with those of a bisphenol-A epoxy-amine resin. Depending on the epoxy resin formulation, results confirmed the high potential of Biolignin TM as a biosourced polyphenol used in epoxy resin applications. © 2012 Wiley Periodicals, Inc.


Snelders J.,Catholic University of Leuven | Dornez E.,Catholic University of Leuven | Benjelloun-Mlayah B.,Compagnie Industrielle de la Matiere Vegetale CIMV | Huijgen W.J.J.,Energy Research Center of the Netherlands | And 4 more authors.
Bioresource Technology | Year: 2014

To assess the potential of acetic and formic acid organosolv fractionation of wheat straw as basis of an integral biorefinery concept, detailed knowledge on yield, composition and purity of the obtained streams is needed. Therefore, the process was performed, all fractions extensively characterized and the mass balance studied. Cellulose pulp yield was 48% of straw dry matter, while it was 21% and 27% for the lignin and hemicellulose-rich fractions. Composition analysis showed that 67% of wheat straw xylan and 96% of lignin were solubilized during the process, resulting in cellulose pulp of 63% purity, containing 93% of wheat straw cellulose. The isolated lignin fraction contained 84% of initial lignin and had a purity of 78%. A good part of wheat straw xylan (58%) ended up in the hemicellulose-rich fraction, half of it as monomeric xylose, together with proteins (44%), minerals (69%) and noticeable amounts of acids used during processing. © 2014 Elsevier Ltd.


PubMed | Royal DSM, Energy Research Center of the Netherlands, Catholic University of Leuven, Compagnie Industrielle de la Matiere Vegetale CIMV and Wageningen UR Food & Biobased Research
Type: | Journal: Bioresource technology | Year: 2014

To assess the potential of acetic and formic acid organosolv fractionation of wheat straw as basis of an integral biorefinery concept, detailed knowledge on yield, composition and purity of the obtained streams is needed. Therefore, the process was performed, all fractions extensively characterized and the mass balance studied. Cellulose pulp yield was 48% of straw dry matter, while it was 21% and 27% for the lignin and hemicellulose-rich fractions. Composition analysis showed that 67% of wheat straw xylan and 96% of lignin were solubilized during the process, resulting in cellulose pulp of 63% purity, containing 93% of wheat straw cellulose. The isolated lignin fraction contained 84% of initial lignin and had a purity of 78%. A good part of wheat straw xylan (58%) ended up in the hemicellulose-rich fraction, half of it as monomeric xylose, together with proteins (44%), minerals (69%) and noticeable amounts of acids used during processing.


Llovera L.,Compagnie Industrielle de la Matiere Vegetale CIMV | Benjelloun-Mlayah B.,Compagnie Industrielle de la Matiere Vegetale CIMV | Delmas M.,Compagnie Industrielle de la Matiere Vegetale CIMV | Delmas M.,National Polytechnic Institute of Toulouse
BioResources | Year: 2016

Polyurethane (PU) films were prepared by solution casting using a three-component system, namely, a novel solvolytic lignin, polyethylene glycol (PEG), and tolylene 2,4-diisocyanate (TDI), with dibutyltin dilaurate as a catalyst. An important objective was to incorporate as much lignin as possible. To this end, PU film synthesis was optimized by varying the lignin content (30 to 70 wt.% with respect to PEG), isocyanate-to-hydroxyl (NCO/OH) stoichiometry (0.8, 1, 1.2, 1.5, and 1.8), and PEG molecular weight (400, 600, and 1000). The results showed that the films derived from PEG 600 and a NCO/OH ratio of 1.5 were synthesized with a maximum content of 70% lignin, with respect to PEG. The effects of lignin content on the tensile properties and the thermostability of the PU films were studied. The onset decomposition temperature (TOD) of the lignin PU films reached an average limit of 310 °C, regardless of the lignin content, and 260 °C for a PU film without lignin. Thus, the addition of lignin, as a PEG substitute in polyurethane films, leads to better thermal stability. Furthermore, breaking stress, Young's modulus, and Shore hardness of PU films increased constantly with lignin content, without reaching a maximum.


Patent
Compagnie Industrielle De La Matiere Vegetale Cimv | Date: 2014-03-26

A lignin-phenol-formaldehyde resin, which is obtained by polycondensation of formaldehyde, phenol and lignin in the presence of a basic or acidic catalyst, is characterized in that the lignin is a lignin that is not chemically modified at the available functional groups. This lignin has a low molecular mass and includes available functional groups chosen from the group including aliphatic hydroxyls and phenolic hydroxyls. The degree of substitution by weight of phenol with the lignin is between 50% and 60%. The weight proportion of the lignin and of phenol in the resin is equal to the weight proportion of phenol in a lignin-free phenol-formaldehyde (PF) resin.


Patent
Compagnie Industrielle De La Matiere Vegetale Cimv | Date: 2011-10-05

A process for producing bioethanol includes the steps of pretreatment (consisting in destructuring the lignocellulosic vegetable raw material by placing it in the presence of a mixture containing formic acid, acetic acid and water, then in separating cellulose), of enzymatic hydrolysis and of alcoholic fermentation, characterized in that it includes, prior to the enzymatic hydrolysis, a step of partial elimination of the lignins so as to obtain a residual overall level of lignins (T), expressed as percentage by weight, which is non-zero and which is included in a range determined by a lower limit, and an upper limit Bsup, respectively equal to 0.30% and 4%. In order to obtain conditions of acidification before the enzymatic hydrolysis step, the process includes a step for re-acidification of the mixture, which is carried out with an acid, or of a mixture of acids, of determined pKa, and preferably with weak organic.

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