Obiettivo The objectives of the R&D to be carried out is the development of the dilute acid hydrolysis of lignocellulosic materials through the study of the technical and economical viability of an innovative ultra fast process; and the optimization of the reverse osmosis as a method for concentration of sugars present in the acid hydrolyzates of lignocellulose obtained in a counter current percolator. The study and optimization of an innovative sequential fermentation method for ethanol production from pentoses and hexoses contained in the hydrolyzates is also part of the project.The main aim of the research proposed is the design, construction, operation and technical and economic evaluation of a dilute second stage acid hydrolysis unit of lignocellulose operating at temperature interval 240-270 C and very short reaction times, 2-4 s. Other aims of the work proposed are: At the level of the hydrolytic process: To study the process impregnation and heating conditions of the biomass in order to work at maximum solid to liquid ratio. At the level of ethanol production: To study and optimize a sequential ethanol fermentation of the pentoses and hexoses contained in the acid pre and hydrolyzates of lignocellulose, with simultaneous employment of cellulase to achieve the hydrolysis into glucose of the oligosaccharides resulting of the previous acid hydrolytic processes. At the level of the joint global project: To make a comparative study on the technical feasibility of the acid hydrolysis technologies developed by Bertin & Cie. (Counter current percolation) and CIEMAT-ZellPlan (ultra fast hydrolysis). The main benefits expected of the R&D to be undertaken affect to which are usually considered the bottlenecks of the ethanol production from lignocellulose by acid hydrolysis. Among benefits can be cited: At the level of the hydrolytic process: 1. To reduce the size of the hydrolysis equipment, thus improving their scaling-up. 2. To achieve important reductions of acid and water and energy consumption by operating at high temperatures (up to 270 C) and high solid to liquid ratios, respectively; as well as high glucose concentrations (12-15%) in the hydrolyzates. 3. To get higher glucose yields by additional employment of cellulase during fermentation. At the level of ethanol production: To increase by 30-35% the ethanol yield from lignocellulose in relation to the most conventional processes only utilizing the hexoses fraction, producing final ethanol concentrations next to 50 g/l in the fermentation media. Campo scientifico engineering and technologychemical engineeringseparation technologiesdesalinationreverse osmosisnatural scienceschemical sciencesorganic chemistryalcoholssocial scienceseconomics and businessbusiness and managementemploymentagricultural sciencesagricultural biotechnologybiomassengineering and technologyindustrial biotechnologybioprocessing technologiesfermentation Programma(i) FP2-JOULE 1 - Specific research and technological development programme (EEC) in the field of energy - non-nuclear energies and rational use of energy - (JOULE), 1989-1992 Argomento(i) Data not available Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore CENTRO DE INVESTIGACIONES ENERGETICAS, MEDIAMBIENTALES Y TECNOLOGICAS Contributo UE Nessun dato Indirizzo 22,Avenida Complutense 22 28040 MADRID Spagna Mostra sulla mappa Costo totale Nessun dato Partecipanti (2) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto Bertin et Cie S.A. Francia Contributo UE Nessun dato Indirizzo 59,Rue Pierre Curie 59 78373 Plaisir Mostra sulla mappa Costo totale Nessun dato Zellstoffanlagen-Planungs GmbH Germania Contributo UE Nessun dato Indirizzo Von-Kahr-Straße 2 80997 München Mostra sulla mappa Costo totale Nessun dato
