RT Journal Article
T1 Electrochemical oxidation of lignin for the simultaneous production of bioadhesive precursors and value-added chemicals
A1 Conde, Júlio J.
A1 González Rodríguez, Sandra
A1 Chen, Xinyi
A1 Lu Chau, Thelmo Alejandro
A1 Eibes González, Gemma María
A1 Pizzi, Antonio
A1 Moreira Vilar, María Teresa
K1 Upcycling
K1 Organosolv lignin
K1 Electrochemistry
K1 Valorization
K1 Bio-adhesive
AB Electrochemical oxidation of lignin has been widely regarded as a clean and reliable alternative to obtain value-added products from lignin, such as vanillin or guaiacol. This work aims to go one step beyond the production of low molecular weight molecules and explore the possibility of using lignin residues from electrochemical treatments in the context of biorefinery. To this end, a two-way valorization of lignin by electrochemical oxidation is proposed, in order to obtain a liquid phase enriched in low molecular weight organic oligomers and a solid phase of modified lignin to be used as bioadhesive precursor. Hydroxylation of lignin by electrochemical oxidation using boron-doped diamond (BDD) anodes was observed according to the FTIR and MALDI-TOF results, concluding that an applied current density of 10 mA cm−2 leads to promising modifications for the formulation of bioadhesives. Furthermore, NIPU bioadhesives with electrochemically modified lignin were successfully prepared and tested for use in particleboard panels, showing satisfactory mechanical properties, and thus paving the way for more environmentally friendly lignin modification procedures for the wood industry.
PB Elsevier
YR 2022
FD 2022
LK http://hdl.handle.net/10347/29888
UL http://hdl.handle.net/10347/29888
LA eng
NO Biomass and Bioenergy 169 (2023) 106693
NO JJC acknowledges financial support from Galician Government though a postdoctoral fellowship (ED481B-2021/015). SG-R and GE predoctoral and postdoctoral fellowships (BES-2017-081677 and RYC-2018-024846-I, respectively) were funded by MCIN/AEI/10.13039/501100011033 and by “ESF Investing in your future”. JJC, SG-R, TAL-C, GE and MTM belong to the Galician Competitive Research Group (GRC) ED431C-2021/37. LERMAB is financed by the French Agence Nationale de la Recherche (ANR) as part of the laboratory of excellence (LABEX) ARBRE. The authors would also like to thank the use of the analytical facilities of IR-Raman Spectroscopy Unit and Mass Spectrometry Unit from RIAIDT-USC.
DS Minerva
RD 1 may 2026