State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
Shanghai Municipal Engineering Design Institute (Group) Co., Ltd, Shanghai 200092, China.
J Hazard Mater. 2022 Aug 15;436:129224. doi: 10.1016/j.jhazmat.2022.129224. Epub 2022 May 25.
Peroxydisulfate (PDS)-based advanced oxidation processes (AOPs) have been demonstrated to be an effective technology for the removal of refractory organic contaminants from the aquatic environment. Herein, a photothermal synergistic strategy is developed to realize the green activation of PDS under solar light irradiation. An innovative solar photothermal reaction system and its corresponding evaluation method are established. The results show that there is a synergistic effect between light and light-generated thermal effects on the activation of PDS for effectively removing fulvic acid (FA). The maximum degradation percentage of FA increases from 42.6% to 90.8% after introducing ZrC nanoparticles as photothermal materials. The maximum temperature of the whole system is up to 66.4 ℃ after 120 min irradiation at 0.007 wt% solid content of ZrC, which is higher by 26.9% compared with that in the absence of ZrC nanoparticles. Furthermore, the underlying mechanism and PDS activation efficiency are deeply investigated. This work provides a viable strategy for directly using solar radiation to activate PDS for degrading refractory organic compounds, which creates a new avenue toward the utilization of solar energy for wastewater treatment.
过二硫酸盐（PDS）基高级氧化工艺（AOPs）已被证明是一种从水环境中去除难降解有机污染物的有效技术。在此，开发了一种光热协同策略，以实现在太阳光照射下绿色激活 PDS。建立了一种创新的太阳能光热反应系统及其相应的评价方法。结果表明，光和光生热效应对 PDS 活化具有协同作用，可有效去除富里酸（FA）。引入 ZrC 纳米粒子作为光热材料后，FA 的最大降解率从 42.6%提高到 90.8%。在 0.007wt%ZrC 固体含量下照射 120min 后，整个系统的最高温度达到 66.4℃，比没有 ZrC 纳米粒子时高 26.9%。此外，还深入研究了潜在的机制和 PDS 激活效率。这项工作为直接利用太阳辐射激活 PDS 降解难降解有机化合物提供了一种可行的策略，为利用太阳能处理废水开辟了新途径。
