【摘要】 采用紫外光(UV)-含Mn2+类Fenton试剂降解活性艳红X-3B,比较了UV-H2O2、Mn2+-H2O2和UV-Mn2+-H2O2三种体系下活性艳红X-3B的降解效果,考察了UV-Mn2+-H2O2体系中NO3-和Cl-浓度对活性艳红X-3B降解率的影响。实验结果表明:UV-Mn2+-H2O2体系中存在UV-H2O2和Mn2+-H2O2的协同作用;反应60min后活性艳红X-3B的降解率达99.30%,TOC去除率为56.45%,剩余H2O2浓度为6.28mmol/L;NO3-在紫外区的强吸收阻碍了H2O2的分解,而Cl-则是通过直接俘获溶液中的.OH来实现抑制作用。更多还原

【Abstract】 Reactive brilliant red X-3B was degraded by ultraviolet light (UV)-Mn2+-containing Fenton agent. The degradation effects under three kinds of systems,such as UV-H2O2,Mn2+-H2O2,UV-Mn2+-H2O2,were compared with each other. The effects of NO-3 and Cl-concentrations on the degradation rate of reactive brilliant red X-3B in the UV-Mn2+-H2O2 system were studied. The experimental results show that:there is a synergistic reaction between UV-H2O2 and Mn2+-H2O2 in the UV-Mn2+-H2O2 system; After 60 min of reaction,the degradation rate of reactive brilliant red X-3B is 99.30%,the removal rate of TOC is 56.45% and the concentration of residual H2O2 is 6.28 mmol/L; The strong Absorption of ultraviolet light on NO-3 can impede the decomposition of H2O2,while Cl-can inhibit the decomposition by direct capture of ·OH in the solution.更多还原