Sonolysis and sono-Fenton oxidation for removal of ibuprofen in (waste)water - Archive ouverte HAL Access content directly
Journal Articles Ultrasonics Sonochemistry Year : 2017

Sonolysis and sono-Fenton oxidation for removal of ibuprofen in (waste)water

Abstract

Two sonochemical processes were compared for the removal of ibuprofen in different water matrixes (distilled water and effluent from wastewater treatment plant). The effect of various operating parameters, such as pH (2.6–8.0), ultrasound power density (25–100 W/L), sonication frequency (12–862 kHz), addition of radical promoters (H2O2 and Fenton’s reagent) or scavengers (n-butanol and acetic acid), was evaluated. Sono-degradation of ibuprofen followed a first-order kinetic trend, whose rate constant increased with ultrasound density and frequency. For this hydrophobic and low volatile molecule, a free-radical mechanism at the bubble interface was established. Coupling ultrasound with Fenton reaction showed a positive synergy, especially in terms of mineralization yield, while adding H2O2 alone had no significant beneficial effect. Dedicated experiments proved this synergy to be due to the enhanced regeneration of ferrous ions by ultrasound. Efficacy of the sonolysis process was hampered in wastewater matrix, mainly as the consequence of higher pH increasing the molecule solubility. However, after convenient acidification, sono-Fenton oxidation results remained almost unchanged, indicating no significant radical scavenging effects from the effluent compounds.
Fichier principal
Vignette du fichier
Adityosulindro_20412.pdf (669.6 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01843482 , version 1 (18-07-2018)

Identifiers

Cite

Sandyanto Adityosulindro, Laurie Barthe, Katia González-Labrada, Ulises Javier Jáuregui Haza, Henri Delmas, et al.. Sonolysis and sono-Fenton oxidation for removal of ibuprofen in (waste)water. Ultrasonics Sonochemistry, 2017, 39, pp.889-896. ⟨10.1016/j.ultsonch.2017.06.008⟩. ⟨hal-01843482⟩
66 View
1225 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More