Covarrubias-García, Itzel; Osorio-González, Carlos S.; Ramirez, Antonio Avalos; Rodríguez-López, José Luis; Brar, Satinder Kaur et Arriaga, Sonia (2021). Nanostructured complex of reduced graphene oxide adorned with magnetite as an adsorbent for inhibitor compounds in wood hydrolysates. Microporous and Mesoporous Materials , vol. 310 . p. 110592. DOI: 10.1016/j.micromeso.2020.110592.
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Lignocellulosic biomass is an abundant and renewable feedstock for biofuels, biochemicals and biomaterials. To make this recalcitrant biomass more susceptible to hydrolysis and microbial conversion a pretreatment is required. Many pretreatments have resulted in high sugar yields; however, they can generate microbial inhibitory compounds in the fermentation step. Therefore, the detoxification of hydrolysates is necessary. This study shows that reduced graphene oxide adorned with magnetite nanoparticles (rGO-MNPs) can adsorb inhibitory compounds such as furfural. Adsorption tests were performed in both aqueous solutions (furfural and furfural-glucose) and wood hydrolysate. rGO-MNPs (20 mg) removed 68% of furfural when it was alone, 49% of furfural when it was mixed with glucose and 20% of furfural in the wood hydrolysate. Among the adsorption of furfural in wood hydrolysate, rGO-MNPs adsorbed other lignin derivate compounds. Finally, no toxic effect of rGO-MNPs on R. toruloides-1588 was observed during the fermentation using detoxified wood hydrolysate.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | reduced graphene; magnetite; adsorption; furfural; wood hydrolysate |
| Centre: | Centre Eau Terre Environnement |
| Date de dépôt: | 09 juin 2021 15:36 |
| Dernière modification: | 09 juin 2021 15:36 |
| URI: | https://espace.inrs.ca/id/eprint/11473 |
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