Recovery of Vanillin and Syringaldehyde from Lignin Oxidation: A Review of Separation and Purification Processes

Maria Inês F. Mota, Paula C.Rodrigues Pinto*, José Miguel Loureiro, Alírio E. Rodrigues

*Autor correspondente para este trabalho

Resultado de pesquisarevisão de pares

82 Citações (Scopus)

Resumo

Lignin is an underexploited side-stream of pulp and paper industry and biorefineries, being used for energy production at mill site or as low value material for dispersants or binding applications. However, an integrated process of reaction and separation can be implemented for the production of high added-value monomeric phenolic chemicals such as vanillin and syringaldehyde. In this review, the main research advances in the recovery of vanillin and syringaldehyde resulting from oxidation of lignin are addressed, covering various separation methodologies namely liquid-liquid extraction, supercritical fluid extraction, distillation, crystallization, membrane separation, and adsorption. Studies in this area started in the early years of the 20th century, but in the last decades several processes have been suggested, mainly for vanillin separation. Finding the ultimate industrially feasible process is still a necessary task and this review points out the most promising technologies and sequence of processes.

Idioma originalEnglish
Páginas (de-até)227-259
Número de páginas33
RevistaSeparation and Purification Reviews
Volume45
Número de emissão3
DOIs
Estado da publicaçãoPublicado - 2 jul 2016

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