An integrated process to produce vanillin and lignin-based polyurethanes from Kraft lignin

• Tipo: Outra Publicação em Revista Científica Internacional
• Data: 2009

Autores

Borges da Silva, EAB (Autor) Outra; Zabkova, M (Autor) Outra; Araujo, JDP (Autor) FEUP; Cateto, CA (Autor) Outra; Barreiro, MF (Autor) Outra; Belgacem, MN (Autor) Outra; Alírio Rodrigues (Autor) FEUP

Revista

Título: Chemical Engineering Research and Design

Vol. 87 Nº 12A

Páginas: 1276-1292

ISSN: 0263-8762

Editora: Institute of Chemical Engineers

Indexação

ISI Web of Knowledge - 177 Citações

ISI Web of Science

Scopus - 288 Citações

INSPEC

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

ID Authenticus: P-003-FZ2

DOI: 10.1016/j.cherd.2009.05.008

Abstract (EN): The aim of this manuscript is to present an integrated process that includes reaction and separation steps for producing vanillin and lignin-based polyurethanes from Kraft lignin. it provides details about lignin oxidation and subsequent vanillin recovery, as well as, the synthesis of lignin-based polyurethanes. The oxidation of Kraft lignin in alkaline medium has been carried out in a batch reactor and the optimum operational conditions for vanillin production obtained. The feasibility of a continuous process for vanillin production has been analyzed using a structured bubble column reactor. The generated reaction stream (degraded lignin and sodium vanillate) was further subjected to an ultrafiltration process to recover the vanillate. An ion-exchange process allows recovering the vanillin by passing the vanillate solution through a column packed with an ion-exchange resin in H+ form. The remaining lignin can act as a raw material to produce polyurethanes and/or biofuels. In this work the first approach was explored.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 17