Enhancement of lignin production from olive tree pruning integrated in a green biorefinery / Ana Toledano in Industrial & engineering chemistry research, Vol. 50 N° 11 (Juin 2011)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp 6573–6579 Titre : Enhancement of lignin production from olive tree pruning integrated in a green biorefinery Type de document : texte imprimé Auteurs : Ana Toledano, Auteur ; Luis Serrano, Auteur ; Jalel Labidi, Auteur Année de publication : 2011 Article en page(s) : pp 6573–6579 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Olive tree pruning Lignocellulosic Résumé : The green biorefinery concept relies on economically feasible processing to achieve a complete utilization of most lignocellulosic biomass components using green technologies. Among the main component of lignocellulosic biomass, lignin is one of the most interesting components since its aromatic nature makes lignin unique. The study presented here was focused on the enhancement of the organosolv lignin produced from olive wood from the point of view of not only operational conditions but also taking into account the purity and contamination of the obtained lignin. The results showed that the amount of lignin recovered in the liquor was strongly influenced by the process temperature. The ethanol concentration presented the opposite behavior with lignin, reaching high yields at low concentrations. Then, the obtained lignins under optimized conditions were analyzed in order to verify their purity. Almost all the obtained lignins presented hemicellulose contamination but there were differences between the polymerization degree of hemicelluloses and the abundance of hemicelluloses. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie102142f [article] Enhancement of lignin production from olive tree pruning integrated in a green biorefinery [texte imprimé] / Ana Toledano, Auteur ; Luis Serrano, Auteur ; Jalel Labidi, Auteur . - 2011 . - pp 6573–6579. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp 6573–6579 Mots-clés : Olive tree pruning Lignocellulosic Résumé : The green biorefinery concept relies on economically feasible processing to achieve a complete utilization of most lignocellulosic biomass components using green technologies. Among the main component of lignocellulosic biomass, lignin is one of the most interesting components since its aromatic nature makes lignin unique. The study presented here was focused on the enhancement of the organosolv lignin produced from olive wood from the point of view of not only operational conditions but also taking into account the purity and contamination of the obtained lignin. The results showed that the amount of lignin recovered in the liquor was strongly influenced by the process temperature. The ethanol concentration presented the opposite behavior with lignin, reaching high yields at low concentrations. Then, the obtained lignins under optimized conditions were analyzed in order to verify their purity. Almost all the obtained lignins presented hemicellulose contamination but there were differences between the polymerization degree of hemicelluloses and the abundance of hemicelluloses. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie102142f

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Oxypropylation of rapeseed cake Residue generated in the biodiesel production process / Luis Serrano in Industrial & engineering chemistry research, Vol. 49 N° 4 (Fevrier 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 4 (Fevrier 2010) . - pp 1526–1529 Titre : Oxypropylation of rapeseed cake Residue generated in the biodiesel production process Type de document : texte imprimé Auteurs : Luis Serrano, Auteur ; Alriols, Maria Gonzalez, Auteur ; Briones, Rodrigo, Auteur Année de publication : 2010 Article en page(s) : pp 1526–1529 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Oxypropylation Biodiesel Propylene oxide. Résumé : he oxypropylation of rapeseed cake residue generated in the biodiesel production process was studied. The reaction was carried out by suspending the rapeseed cake residue in propylene oxide [30/70 ratio (w/v)] in the presence of a basic catalyst (10% KOH) and heating the resulting mixture at 160 °C in a nitrogen atmosphere. The chemical structure of the obtained polyol was studied by CHNS elemental analysis, infrared spectroscopy, and 1H NMR spectroscopy, and other parameters such as viscosity, OH number, molecular weight (GPC), and thermal behavior (DSC, TGA) were also measured. The obtained results showed an almost total conversion of the solid substrate into a polyol with good characteristics (OH number, 610 mg of KOH/g; viscosity, 84.23 Pa·s; and molecular weight, 33550 g/mol) for use in polyurethane, polyether, or polyester formulations. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9016732 [article] Oxypropylation of rapeseed cake Residue generated in the biodiesel production process [texte imprimé] / Luis Serrano, Auteur ; Alriols, Maria Gonzalez, Auteur ; Briones, Rodrigo, Auteur . - 2010 . - pp 1526–1529. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 4 (Fevrier 2010) . - pp 1526–1529 Mots-clés : Oxypropylation Biodiesel Propylene oxide. Résumé : he oxypropylation of rapeseed cake residue generated in the biodiesel production process was studied. The reaction was carried out by suspending the rapeseed cake residue in propylene oxide [30/70 ratio (w/v)] in the presence of a basic catalyst (10% KOH) and heating the resulting mixture at 160 °C in a nitrogen atmosphere. The chemical structure of the obtained polyol was studied by CHNS elemental analysis, infrared spectroscopy, and 1H NMR spectroscopy, and other parameters such as viscosity, OH number, molecular weight (GPC), and thermal behavior (DSC, TGA) were also measured. The obtained results showed an almost total conversion of the solid substrate into a polyol with good characteristics (OH number, 610 mg of KOH/g; viscosity, 84.23 Pa·s; and molecular weight, 33550 g/mol) for use in polyurethane, polyether, or polyester formulations. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9016732

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