| Titre : | Chromatographic recovery of monosaccharides for the production of bioethanol from wood (2010) |
| Auteurs : | Jari Heinonen, Auteur ; Tuomo Sainio, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 6, Mars 2010) |
| Article en page(s) : | pp. 2907–2915 |
| Note générale : | Industrial Chemistry |
| Langues : | Anglais |
| Tags : | Chromatographic--Recovery--Monosaccharides-- Bioethanol--Wood |
| Résumé : | Chromatographic recovery of monosaccharides from concentrated-acid hydrolysates of spruce and birch was investigated for the production of bioethanol from lignocellulose. The effects of resin cross-linkage, column loading, and hydrolysate composition on the yield of monosaccharides and the productivity of the process were of particular interest. Three strong acid cation-exchange resins (gel type) were used. Chromatographic separation experiments were done in a batch column. Monosaccharides were recovered as a “center cut” between sulfuric acid and acetic acid. Hydroxymethyl furfural and furfural, which inhibit the fermentation of monosaccharides, were completely separated from the other components. The highest H2SO4−monosaccharide separation efficiency was obtained with a 6 wt % cross-linked resin. The monosaccharide−acetic acid separation efficiency was found to improve with increasing resin cross-linkage. In the case of high amounts of acetic acid in the hydrolysate, a resin with a high cross-link density is needed for a good yield of monosaccharides. With hydrolysates containing small amounts of acetic acid, a 6 wt % cross-linked resin was found to give the highest yield. The productivity of the process was found to increase with the resin cross-linkage (up to 8 wt %). The optimum column loading depends on whether a high monosaccharide yield or high productivity is desired. The highest yield is obtained with a low loading. As to the productivity, the optimum loading was found to be approximately 10 vol % of the bed volume. |
| Note de contenu : | Bibiogr. |
| ISSN : | 0888-5885 |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie901598z |
