Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering, University of Cincinnati, Cincinnati OH 45221-0012 USA.
Department of Chemical Engineering and Physical Chemistry, University of Extremadura, Avda. Elvas 06006 Badajoz Spain; University Institute of Water, Climate Change and Sustainability (IACYS), University of Extremadura, Avda. de la Investigación 06006 Badajoz Spain.
J Hazard Mater. 2020 Dec 5;400:123118. doi: 10.1016/j.jhazmat.2020.123118. Epub 2020 Jun 10.
New technologies to address the presence of pharmaceutical and personal care products (PPCPs) in wastewater are needed, especially in those cases in which water will be reused. In this work, the activation of peroxymonosulfate (PMS) with simulated solar radiation has been applied to the oxidation of a mixture of six PPCPs, i.e. caffeine, primidone, N,N-diethyl-3-methylbenzamide (DEET), methylparaben, clofibric acid and ibuprofen. The sole application of solar radiation, i.e. solar photolysis, only led to the oxidation of clofibric acid (complete degradation in 90 min). The combination of PMS and solar radiation resulted in the degradation of all target micropollutants. The complete degradation of this mixture at initial 100 ppb was achieved with 0.5 mM of initial PMS after 90 min. A kinetic study that acceptably simulates the experimental data under different conditions has been proposed. The effects of initial PPCP concentration (1 mg L-100 μg L), PMS dose (0.1-5 mM), and pH (3-9) were tested and kinetically simulated. Finally, the PPCPs removal study was carried out in two real water matrices (river and a secondary effluent of an urban wastewater treatment plant). A higher dose of PMS, ten times higher, was required to achieve complete degradation of the micropollutants if compared to ultrapure water.
需要开发新技术来解决废水中药物和个人护理产品（PPCPs）的存在问题，特别是在水将被再利用的情况下。在这项工作中，模拟太阳光辐射激活过一硫酸盐（PMS）已被应用于六种 PPCPs（咖啡因、扑米酮、N，N-二乙基-3-甲基苯甲酰胺（DEET）、甲基对羟基苯甲酸酯、氯菲酸和布洛芬）混合物的氧化。仅应用太阳光辐射，即太阳光解，仅导致氯菲酸的氧化（90 分钟内完全降解）。PMS 和太阳辐射的组合导致所有目标微量污染物的降解。在初始 100 ppb 时，初始 PMS 为 0.5 mM 时，在 90 分钟内即可完全降解该混合物。提出了一种能够在不同条件下令人满意地模拟实验数据的动力学研究。测试并动力学模拟了初始 PPCP 浓度（1 毫克/升-100 微克/升）、PMS 剂量（0.1-5 毫摩尔）和 pH 值（3-9）的影响。最后，在两种实际水基质（河流和城市污水处理厂的二级出水）中进行了 PPCPs 去除研究。与超纯水相比，如果要完全降解这些微量污染物，则需要使用十倍以上的 PMS 剂量。
