HMX废水的纳米TiO2光催化处理

采用负载有纳米TiO2的活性碳纤维布，对不同初始浓度的奥克托今（HMX）废水在不同光源下进行了光催化降解研究。结果表明，在HMX初始浓度及催化剂量相同条件下，光源分别为日光灯、太阳光和紫外光时，HMX均迅速发生光催化分解反应，其降解反应速率依次增大，5h后HMX降解率都可达到98％以上。在目光灯照射下HMX初始溶液浓度对其最终降解率几乎没有影响，180min后HMX降解率可达到91％以上。纳米TiO2光催化降解HMX废水反应符合一级反应动力学，并确定了相应反应动力学参数。

Photocatalytic Treatment of HMX Wastewater with Nano-sized Titanium Dioxide

Simulated octahydro - 1,3,5,7 - tetranitro - 1,3,5,7 - tetrazocine （HMX） wastewater with different initial concentrations was treated with nano - sized titanium dioxide （ nano - TiO2 ） particles loaded active carbon fiber （ACF） cloth under the different lighting sources. The results indicated that at the same initial HMX concentrations and the quantity of catalyst, HMX degraded no matter what kind of light resources were employed. The degradation ratio of HMX increased when fluorescent lamp was changed to sunlight and ultraviolet radiation. For all the three lighting resources, the photocatalytic degradation ratio of the HMX can be 98% or higher after 5 hour＇s treatment. In the case of fluorescent lamp as the lighting resource, the final degradation quantity was independent of the initial HMX concentrations and can be 91% or higher after 3 hour＇s treatment. The photocatalytic degradation follows a first -order kinetics and the corresponding kinetic parameters were determined.