Conversion of lignin into renewable carboxylic acid compounds by advanced oxidation processes

Juhyon Kang, Sibel Irmak and Mark Wilkins

Renewable Energy, 2019, vol. 135, issue C, 951-962

Abstract: The present study was designed to investigate formation of possible carboxylic acids from oxidation of lignin by Fenton and UV-Fenton advanced oxidation processes (AOPs). The study was performed with model lignin monomers (syringaldehyde (SA), 4-hydroxybenzaldehyde (4-HBA), 2-methoxyphenol (2-MP) and 2,6-dimethoxyphenol (2,6-DMP)) and also with lignin isolated from eastern red cedar. Products in samples withdrawn from the reactor mixture at different oxidation stages were determined by GC-MS. Oxidation of one of lignin monomer (2-MP) was also performed with a different AOPs (UV/TiO2) for comparison of oxidation products.

Keywords: Lignin; Carboxylic acids; Oxidation; AOPs; Fenton; UV-Fenton (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:135:y:2019:i:c:p:951-962

DOI: 10.1016/j.renene.2018.12.076

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