Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China; State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, PR China.
Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China; State Key Joint Laboratory of Environment Simulation and Pollution Control, Tsinghua University, Beijing 100084, PR China; Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing 100084, PR China.
Sci Total Environ. 2019 Mar 25;658:1367-1374. doi: 10.1016/j.scitotenv.2018.12.304. Epub 2018 Dec 21.
Carbamazepine is one of pharmaceutical and personal care products (PPCPs) and has been widely used to treat depression and seizures, and it cannot be effectively removed during the conventional wastewater treatment processes. In this study, three processes were used for the carbamazepine degradation, including single radiation, radiation in the presence of peroxymonosulfate (PMS) and radiation followed by PMS oxidation. The results show that radiation in the presence of PMS could enhance the degradation and mineralization of carbamazepine, decreasing the absorbed dose required for completely degrading carbamazepine from 800 Gy to 300 Gy, no matter what the molar ratio of PMS to carbamazepine was. The radiation followed by PMS oxidation significantly increased the mineralization, and the maximum mineralization achieved 46.5% at the dose of 600 Gy. Eight intermediates were tentatively identified. Compared to single radiation process, the radiation in the presence of PMS enhanced the transformation of intermediates and the release of ammonium ion. In real wastewater, the radiation in the presence of PMS could effectively remove carbamazepine and considerably decreased the biological toxicity of the wastewater containing carbamazepine.
卡马西平是一种药物和个人护理产品（PPCPs），已被广泛用于治疗抑郁症和癫痫，并且在常规废水处理过程中无法有效去除。在本研究中，使用了三种工艺来降解卡马西平，包括单独辐射、过一硫酸盐（PMS）存在下的辐射以及辐射后再进行 PMS 氧化。结果表明，PMS 存在下的辐射可以增强卡马西平的降解和矿化作用，将完全降解卡马西平所需的吸收剂量从 800Gy 降低到 300Gy，无论 PMS 与卡马西平的摩尔比如何。辐射后再进行 PMS 氧化显著提高了矿化程度，在 600Gy 的剂量下最大矿化程度达到 46.5%。推测出了 8 种中间产物。与单独辐射过程相比，PMS 存在下的辐射增强了中间产物的转化和铵离子的释放。在实际废水中，PMS 存在下的辐射可以有效地去除卡马西平，并显著降低含卡马西平废水的生物毒性。
