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Advisor(s)
Abstract(s)
The implementation of biorefineries for the production of chemicals as well as materials and energy products is the key to ensure a sustainable future for the chemical and allied industries. LSRE has been working with lignin based bio-refining for near two decades with pioneering work on the subject. A Research & Development Program on the production of phenolic aldehydes, in particular vanillin, from Kraft lignin has been developed for many years. In this work, the strategy is to combine reaction engineering and separation processes for converting lignin from spent liquors into added-value aldehydes. The major result is an integrated process of vanillin production from Kraft lignin. The integrated process is based on three main steps. The first step consists on the alkaline lignin oxidation, in which valuable information can be found to decide the best conditions for the vanillin production. Considering the further isolation of vanillate from the oxidized solution, important results have been reached in the framework of ultra-filtration process, and equilibrium and kinetic adsorption studies. The degraded lignin resulting from membrane process can be considered for obtaining lignin-based polyurethanes materials.
Description
This work has been awarded with the prize for the best poster communication.
Keywords
Aldeídos Lenhina kraft Oxidação Processo Integrado Ultra-filtração
Citation
Silva, E.A.B. ; Zabkova, M. ; Araújo, J. D. ; Cateto, C. A. ; Barreiro, M. F. ; Belgacem, M. N. ; Rodrigues, A.E. ; (2010). Um processo integrado para produzir compostos fenólicos de elevado valor acrescentado a partir de Lenhina Kraft = An integrated process to produce high value-added phenolic compounds from kraft lignin. In XXI TECNICELPA Conference and Exhibition / VI CIADICYP. Lisboa, Portugal. ISBN 978-989-20-1926-0