Yu Linlong, Mehrabani-Zeinabad Mitra, Achari Gopal, Langford Cooper H
Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada.
Department of Civil Engineering, University of Calgary, 2500 University Drive NW, Calgary, AB, Canada.
Chemosphere. 2016 Oct;160:155-61. doi: 10.1016/j.chemosphere.2016.06.080. Epub 2016 Jun 30.
Several oxidative methods were studied to degrade sulfolane in an aqueous medium. These include UVA and UVC irradiation with suitable photoactive oxidants, including ozone, H2O2, and TiO2 based photocatalysis and their combinations. Since sulfolane lacks absorption bands in the UV range beyond 200 nm, initiation of reactions depends on the spectra and photochemistry of the oxidants. Among all the advanced oxidation processes investigated, combinations of (a) UVC with H2O2 and O3 (b) UVC with H2O2 and (c) UVC with O3 led to the highest rate of sulfolane loss in synthetic water samples. Experiments on sulfolane contaminated groundwater samples also indicated that these three combinations can efficiently degrade sulfolane. Furthermore, a synergistic effect was observed in the combination of H2O2 and O3 photolysis.
研究了几种氧化方法以在水介质中降解环丁砜。这些方法包括用合适的光活性氧化剂进行UVA和UVC辐照，所述光活性氧化剂包括臭氧、H2O2以及基于TiO2的光催化及其组合。由于环丁砜在200nm以上的紫外范围内缺乏吸收带，反应的引发取决于氧化剂的光谱和光化学性质。在所研究的所有高级氧化过程中，（a）UVC与H2O2和O3的组合、（b）UVC与H2O2的组合以及（c）UVC与O3的组合在合成水样中导致环丁砜损失率最高。对受环丁砜污染的地下水样品进行的实验还表明，这三种组合能够有效降解环丁砜。此外，在H2O2和O3光解的组合中观察到了协同效应。
