UV and pulsed electron beam radiation for effective bisphenol A degradation

• Published in: Chemosphere (Oxford) 2024-05, Vol.356, p.141802-141802, Article 141802
• Main Authors: Bocharnikova, Elena N., Tchaikovskaya, Olga N., Solomonov, Vladimir I., Makarova, Anna S.
• Format: Article
• Language: English
• Subjects: Benzhydryl Compounds - chemistry; Bisphenol A; BPA; e-beam; Electrons; Excilamps; Phenols - chemistry; Photolysis; Quantum chemical calculation; Spectral luminescent properties; Ultraviolet Rays; UV irradiation; Water Pollutants, Chemical - chemistry; Water Purification - methods
• ISSN: 0045-6535; 1879-1298
• DOI: 10.1016/j.chemosphere.2024.141802

The paper presents the results of studying the efficiency of the bisphenol A transformation in water exposed to ultraviolet radiation and a high-energy-pulse-electron beam (e-beam). It has been shown that in both cases, degradation of dissolved bisphenol A occurs, accompanied by an increase in the absorption coefficient in the wavelength region of more than 300 nm. After exposure, products were recorded that fluoresced in the region of more than λ = 400 nm. The fluorescent transformation product of bisphenol A in water (λ = 425 nm) was maximum formatted after an KrCl excilamp irradiated, and under the action of an e-beam, the accumulation of this product was minimal. Under e-beam radiation (170 keV) the efficiency of bisphenol A (1 mM) removal reached 97%. The data obtained allow us to develop ideas about photolysis and radiolysis in natural water systems when knowledge about targeted and optimal conditions for the degradation of bisphenol A is needed. [Display omitted] •Removal of Bisphenol A using electron beam (170 keV) is a promising, environmentally friendly and simple approach.•Removal of Bisphenol A by UV irradiation was modeled using both KrCl and Xe2 simultaneously.•The end-products of Bisphenol A transformation fluoresced at 425 and 480 nm.•A photolytic pathway for the degradation of Bisphenol A has been proposed.•Energy barriers reduce the efficiency of direct photolysis of bisphenol A.