The hydrolysis process of a real fraction of arabinoxylans derived from wheat bran was studied. The influence of catalyst type and loading, reaction time and different metal cations were discussed in terms of the hydrolysis yield of arabinose and xylose oligomers as well as the formation of furfural as degradation product. A high yield of […]
El proyecto CATHYCEL, catalizadores para hidrogenación de celulosa y productos lignocelulósicos ha sido presentado por nuestro investigador Alberto Romero y ha ganado la Greenweekend Valladolid 2017. El vídeo explica este concepto de biorrefinería. https://youtu.be/lePesznZO4M
She comes from Leibniz Institute for Catalysis, LIKAT (Rostock, Germany), where she focused on the homogeneous catalytic dehydrogenation of hydrogen carriers. During her thesis, she will study the CO2 reduction using lignocellulosic derivatives as reductans. CO2 reduction in hydrothermal environment using biomass as reductant In the last decades, CO2 has attracted more attention for its […]
A suitable technique to upgrade biomass is an essential point in order to make it possible to develop a sustainable economy based on biomass sources. One likely and green option to extract chemicals from biomass is hydrothermal processing. A process that only requires water, high temperature and pressure to fractionate biomass. In the same way, […]
Hemicellulose is a natural polymer, made up of several sugars. It can be used to replace oil in many applications, like: production of biofuels; production of films for packaging; production of gels for drug delivery; production of xylitol, compound of great interest in the medical field; production of furfural, which is used in the production […]
The aim of this work is to study the conversion of arabinoxylans from wheat bran into monomeric sugars, namely xylose and arabinose, using RuCl3-based catalysts. Arabinoxylans (AX), which are the major components of wheat bran, can be converted into arabinose and xylose by a hydrolysis process (Fig. 1). These two sugars are very interesting platform […]
Regarding the shortage of fossil resources and energy sustainability, a great piece of attention has been paid to look for novel alternatives in order to obtain fuels, chemicals and energy. Due to its high oxygen-to-carbon ratio, cellulosic biomass appears as a promising feedstock for its valorization into chemicals and building blocks. In recent years, direct […]
Agro-industrial biomass are considered promising resources for the production of organic carbon-based chemicals and materials. This is the case of sugar beet pulp (SBP), which is the major by-product in beet sugar industry.
Dr. Joana M. C. Lopes defended her thesis on Wednesday 5th October 2016 at the University of Valladolid. The capacity of the ionic liquids (ILs) of dissolving high concentrations of cellulose and/or lignin at relatively low temperatures makes them promising solvents for the processing of lignocellulosic biomass waste. Many applications have been proposed over the years: pre-treatment for fermentation […]
The fractionation of grape seeds as a model biomass was studied using a combination of two processes: solvothermal extraction using ethanol and hydrothermal fractionation-autohydrolysis process in a semicontinuous reactor using subcritial water. Around 70% of the polyphenols were extracted in the first step and close to 80% of the sugars in the second step.