Multistage Pilot Plant for the extraction of hemicellulose with subcritical water

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 […]

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Hydrolysis of Arabinoxylans From Wheat Bran into Monomeric Sugars Over Heterogeneous Catalysts

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 […]

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One-pot conversion of D-Glucose into liquid straigh-chain alkanes over Ru-based catalysts

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 […]

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[Thesis]: Study of the improvement of cellulose processing in ionic liquid by using carbon dioxide by Joana M.C. Lopes

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 […]

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[Paper]: Hydrothermal fractionation of grape seeds in subcritical water to produce oil extract, sugars and lignin

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.

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Kinetic model for hydrothermal fractionation of lignocellulosic biomass in a lab-scale biorefinery

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 […]

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[Award]: Danilo Cantero: MIT Innovators Under 35 Argentina and Uruguay 2016

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

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Study of hemicelluloses composition of different tree species, extraction using subcritical water with a batch cascade reactor

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 […]

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