Thermally activated persulfate (TAP) oxidation of antiepileptic drug carbamazepine in water
Thermally activated persulfate (TAP) oxidation of antiepileptic drug carbamazepine in water
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水中抗癫痫药物卡马西平的热活化过硫酸盐 (TAP) 氧化
DOI：
10.1016/j.cej.2013.05.044
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发表时间：
2013-07-15
影响因子：
15.1
通讯作者：
Hu, Xuhao
中科院分区：
文献类型：
--
作者：
Deng, Jing;Shao, Yisheng;Hu, Xuhao
硫酸盐基高级氧化技术已在水处理和原位化学氧化中得到应用。通过批量实验考察了过硫酸盐用量、卡马西平（CBZ）初始浓度、溶液pH、无机阴离子和阳离子共存等因素对热活化过硫酸盐（TAP）工艺分解CBZ的影响。结果表明，TAP氧化是降解水中CBZ的有效工艺。硫酸盐自由基的产生是导致TAP系统中CBZ降解的主要原因。CBZ降解速率常数随过硫酸盐投加量的增加而增大，随初始浓度的增加而减小。CBZ的分解速率随pH的升高而降低，在pH为3时降解效果最好。除强碱性条件外，在强碱性条件下CBZ的降解性能更高。共存的无机阴离子对CBZ的降解有不同程度的减缓作用，抑制作用顺序为：CO32- > HCO3- > Cl- > SO42- > NO3-。而共存阳离子对CBZ降解的促进作用依次为Fe2+ > Cu2+ > Fe3+。在本研究中，TAP氧化过程中产生了六种主要的中间产物。(C) 2013 Elsevier B.V.版权所有
Sulfate radicals-based advanced oxidation processes have been applied in water treatment and in situ chemical oxidation. Batch experiments were conducted to investigate the influencing factors including persulfate dosage, initial carbamazepine (CBZ) concentrations, solution pH, coexisting inorganic anions and cations on the decomposition of CBZ using thermally activated persulfate (TAP) technology. The results showed that TAP oxidation was efficient process for the CBZ degradation in water. The generation of sulfate radicals was accounted for the CBZ degradation in TAP system. The CBZ degradation rate constant increased as persulfate dosage increased and decreased as the initial CBZ concentrations increased. The CBZ decomposition rate decreased with the increasing pH and the best degradation occurred at pH 3. The exception was the strong alkaline condition under which a higher CBZ degradation performance was achieved. Coexisting inorganic anions slowed down the CBZ degradation to different degrees and the inhibiting effect abided by the following order: CO32- > HCO3- > Cl- > SO42- > NO3-. In contrast, coexisting cations could significantly enhance the CBZ degradation, and the promoting effect was in the order of Fe2+ > Cu2+ > Fe3+. In this study, six major intermediate products were generated during the TAP oxidation. (C) 2013 Elsevier B.V. All rights reserved.