PROPUESTA DE BIORREFINERÍA BASADA EN LOS RESIDUOS DE LA VID
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2022-03-16
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Jaén: Universidad de Jaén
Resumen
[ES] En este trabajo experimental de Fin de Máster, se ha estudiado el pretratamiento con ácido sulfúrico
diluido en dos etapas (a suaves y más severas condiciones de pretratamiento, respectivamente) de
sarmientos de vid (sin y con previa extracción acuosa en autoclave) con objeto de elaborar una propuesta de biorrefinería de este residuo lignocelulósico para la producción de bioetanol.
Considerando la primera etapa de pretratamiento, la mayor recuperación global de azúcares (44,43%)
se obtuvo a 130oC, 2% H2SO4 y usando sarmiento de vid extraído. Por otra parte, considerando ambas
etapas de pretratamiento, los mejores resultados se obtuvieron a 190oC, con una digestibilidad
enzimática del 37,83% y una recuperación global de azúcares del 59,63%. Por tanto, el sarmiento de vid
resulta ser una materia prima muy interesante para la producción de etanol de una manera sostenible,
debido a su alto contenido en celulosa y hemicelulosas, así como su bajo contenido en extractivos.
[EN] In this experimental Master's thesis, the pretreatment with dilute sulphuric acid in two stages (at mild and more severe pretreatment conditions, respectively) of vine shoots (without and with previous aqueous extraction in autoclave) has been studied in order to elaborate a biorefinery proposal of this lignocellulosic residue for the production of bioethanol. Considering the first pre-treatment stage, the highest overall sugar recovery (44.43%) was obtained at 130oC, 2% H2SO4 and using extracted vine shoot. On the other hand, considering both pre-treatment stages, the best results were obtained at 190oC, with an enzymatic digestibility of 37.83% and an overall sugar recovery of 59.63%. Therefore, vine shoot is a very interesting raw material for ethanol production in a sustainable way, due to its high cellulose and hemicellulose content, as well as its low content of extractives.
[EN] In this experimental Master's thesis, the pretreatment with dilute sulphuric acid in two stages (at mild and more severe pretreatment conditions, respectively) of vine shoots (without and with previous aqueous extraction in autoclave) has been studied in order to elaborate a biorefinery proposal of this lignocellulosic residue for the production of bioethanol. Considering the first pre-treatment stage, the highest overall sugar recovery (44.43%) was obtained at 130oC, 2% H2SO4 and using extracted vine shoot. On the other hand, considering both pre-treatment stages, the best results were obtained at 190oC, with an enzymatic digestibility of 37.83% and an overall sugar recovery of 59.63%. Therefore, vine shoot is a very interesting raw material for ethanol production in a sustainable way, due to its high cellulose and hemicellulose content, as well as its low content of extractives.