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.
A novel physico-chemical model for hydrothermal fractionation of lignocellulosic biomass in a packed bed reactor is proposed in this work. The objective of this work is to reproduce the experimental behaviour with this model, including the effect of temperature, water flow and biomass properties. To do so, a novel reaction pathway based on two types […]
In this research, the heat and pressure integration possibilities of the supercritical water hydrolysis process are analyzed. The main objective is to improve the global energetic efficiency and therefore reduce the consumption of utilities.
Danilo Cantero, one of our former PhD students and current collaborator, has been recognized as one of MIT Technology Review Innovators Under 35 Argentina and Uruguay 2016, thanks to his innovations and developments on a high efficiency supercritical water reactor for cellulose hydrolisis. http://innovatorsunder35.com/innovators-under-35-argentina-uruguay http://innovatorsunder35.com/innovator/danilo-cantero
Hemicelluloses from 10 different tree species commonly growing in the Castilla y Leon region have been extracted with a batch cascade reactor. Raw materials came from tree branches, cut during the seasonal pruning. The aim was to correlate the yield of hemicellulose achieved through the extractions, with the total composition and the structure of the […]