AI Article Synopsis
- Bisphenol AF (BPAF) can be effectively degraded using ultrasound-assisted methods that generate hydrogen peroxide in situ, utilizing a copper(II) catalyst with dioxygen and hydroxylamine.
- The in situ generated hydrogen peroxide significantly enhances BPAF degradation rates from 46.7% to 94.8% in about 15 minutes, following a pseudo-first-order kinetic model.
- The research also explores factors affecting BPAF degradation, such as pH levels, the presence of anions, humic acid, and concentrations of reactants, while identifying degradation products through mass spectrometry and proposing a degradation pathway.
Article Abstract
Bisphenol AF (BPAF) is degraded through the ultrasound-assisted in situ generation and activation of hydrogen peroxide (HO) by the copper(II) catalysed oxidation of hydroxylamine (NHOH) with dioxygen (O). Compared to added HO, in situ generated HO significantly improves the degradation of BPAF from 46.7% to 94.8% in ∼15 min. The reaction follows a pseudo-first-order kinetic model. This study examines the influence of solution pH, anions, humic acid, and different concentrations of the reactants on BPAF degradation. Mass spectrometry was used to identify the BPAF degradation products, and a degradation pathway is proposed. This work advances the understanding of in situ hydrogen peroxide generation and activation in advanced oxidation (Fenton-like) processes (AOPs).
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| http://dx.doi.org/10.1016/j.jenvman.2024.123267 | DOI Listing |
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