On the Degradation of Glyphosate by Photocatalysis Using TiO2/Biochar Composite Obtained from the Pyrolysis of Rice Husk - ECOLA Accéder directement au contenu
Article Dans Une Revue Water Année : 2021

On the Degradation of Glyphosate by Photocatalysis Using TiO2/Biochar Composite Obtained from the Pyrolysis of Rice Husk

Thu Phuong Nguyen
Huong Mai
  • Fonction : Auteur
  • PersonId : 1330996

Résumé

In this study, titanium dioxide (TiO2) nanoparticles are immobilized onto rice husk biochar (RHB), as a porous support, for the photodegradation of glyphosate under UV light irradiation. The TiO2/RHB composites are prepared by pyrolysis and the sol-gel method. The SEM, XRD, EDX, and FT-IR results confirm the graphene structure of RHB and the formation of 10.61 nm TiO2 nanoparticles on the catalyst support. The effects of operating conditions, including catalyst dosage (3 g L−1, 5 g L−1, 10 g L−1, and 20 g L−1) and different illumination conditions (9 W lamp, 2 × 9 W lamps), on the removal of glyphosate from aqueous solutions were investigated. The photodegradation efficiency of 15 mg L−1 of commercial glyphosate was up to 99% after 5 h of irradiation at pH 3.0, with a TiO2/RHB dosage of 10 g L−1. However, the mineralization efficiency under this condition was lower than the decomposition efficiency of glyphosate, proving the partial degradation of glyphosate into AMPA and other metabolites after 5 h of reaction.
Fichier principal
Vignette du fichier
Thu et al 2021 Degradation of glyphosate by photocatalysis using TiO2 coated rice husk biochar Water.pdf (6.08 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04369925 , version 1 (02-01-2024)

Identifiants

Citer

Phuong Thu Le, Duy Ngoc Le, Thi Hue Nguyen, Huyen Thuong Bui, Le Anh Pham, et al.. On the Degradation of Glyphosate by Photocatalysis Using TiO2/Biochar Composite Obtained from the Pyrolysis of Rice Husk. Water, 2021, 13 (23), pp.3326. ⟨10.3390/w13233326⟩. ⟨hal-04369925⟩
56 Consultations
7 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More