@article {doi:10.1021/acsestwater.1c00355,
	title = {Accelerated Oxidation of Organic Micropollutants during Peracetic Acid Treatment in the Presence of Bromide Ions},
	journal = {ACS ES\&amp;T Water},
	volume = {2},
	number = {2},
	year = {2022},
	pages = {320-328},
	abstract = {Peracetic acid (PAA), an alternative disinfectant of chlorine, has drawn increasing attention in the application of wastewater treatment. However, little is known about the influence of water matrices on PAA-induced organic micropollutant (OMP) degradation. Here, we found that the coexisting bromide ions (Br{\textendash}) in water can trigger the oxidation of OMP during PAA treatment but probably result in higher ecotoxicity. Br{\textendash} can efficiently decompose PAA with a species-specific rate constant (kPAAH/Br{\textendash}) of 0.198 {\textpm} 0.003 M{\textendash}1{\textperiodcentered}s{\textendash}1. The thus generated HOBr led to a significant abatement (31.8{\textendash}81.3\%) of OMPs (17α-ethinylestradiol, sulfamethoxazole, naproxen, and phenol) after a 1 h reaction at pH 7.1. The coexisting H2O2 component in the PAA solution can competitively consume HOBr and inhibit OMP transformation. The OMP degradation in the PAA/Br{\textendash} process was highly pH-dependent and preferred acidic conditions. Furthermore, a comprehensive model was established to simulate the reaction kinetics of the OMP degradation by the PAA/Br{\textendash} process with good accuracy. High-performance/electrospray ionization-triple quadrupole mass spectrometry results indicated the generation of various brominated products, with higher model-predicted toxicity than their parent compounds. This work significantly advances the understanding of the role of Br{\textendash} in OMP oxidation by PAA and alerts the possible environmental health risks.},
	doi = {10.1021/acsestwater.1c00355},
	url = {https://doi.org/10.1021/acsestwater.1c00355},
	author = {Du, Penghui and Liu, Wen and Rao, Zuomin and Junjian Wang}
}
