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研究了利用60Co-γ源辐照降解4-氯酚的过程,探讨了辐照剂量、溶液的初始pH值、初始浓度、不同气体条件以及自由基清除剂等因素对4-氯酚辐照降解的影响。采用高效液相色谱仪(HPLC)、总有机碳(TOC)分析仪、离子色谱仪(IC)、可吸附性有机卤化物(AOX)分析仪及紫外分光光度计等测试手段评价了4-氯酚在不同实验条件下的辐照降解效果。实验结果表明,较低的4-氯酚初始浓度,较高的辐照剂量及低pH值能够提高其降解速率。提高正丁醇的质量浓度可减少4-氯酚的降解率,说明自由基清除剂对4-氯酚的辐照降解有明显的抑制作用。
The degradation process of 4-chlorophenol using 60Co-γ source was studied. The effects of irradiation dose, initial solution pH, initial concentration, different gas conditions and free radical scavenger on the degradation of 4-chlorophenol Impact. The content of 4-chloro-4-chlorophenol was evaluated by HPLC, TOC, IC, AOX and UV spectrophotometer. Radiation Degradation Effect of Phenol under Different Experimental Conditions. The experimental results show that lower initial concentration of 4-chlorophenol, higher irradiation dose and lower pH value can improve the degradation rate. Increasing the mass concentration of n-butanol can reduce the degradation rate of 4-chlorophenol, indicating that radical scavengers have a significant inhibitory effect on the irradiation degradation of 4-chlorophenol.