Degradation of tri(2-chloroisopropyl) phosphate by the UV/H2O2 system: Kinetics, mechanisms and toxicity evaluation
作者:Huan He、Qiuyi Ji、Zhanqi Gao、Shaogui Yang、Cheng Sun、Shiyin Li、Limin Zhang
DOI:10.1016/j.chemosphere.2019.124388
日期:2019.12
into a series of hydroxylated and dechlorinated products. Based on the luminescent bacteria experimental data, the toxicity of TCPP products increased obviously as the reaction proceeded. In conclusion, degradation of high concentration TCPP in UV/H2O2 systems may result in more toxic substances, but its potential application for real wastewater is promising in the future after appropriate optimization
开发了一种基于紫外线辐射与 H2O2 (UV/H2O2) 联合降解磷酸三氯异丙基酯 (TCPP) 的光降解技术。在超纯水中,观察到伪一级反应,使用 250 W 紫外光照射和 50 mg L-1 H2O2,5 mg L-1 TCPP 的降解速率常数达到 0.0035 min-1 (R2 = 0.9871)。具体而言,Cl-和PO43-的产率分别达到0.19 mg L-1和0.58 mg L-1。总有机碳(TOC)去除率为43.02%。反应后TCPP溶液的pH值为3.46。质谱检测数据显示 TCPP 部分转化为一系列羟基化和脱氯产物。根据发光细菌实验数据,随着反应的进行,TCPP产物的毒性明显增加。