Cu-Fe/AC催化剂连续CWPO法处理苯酚废水

Continuous CWPO treatment of phenol wastewater with Cu-Fe/AC catalyst

采用微波辅助合成法制备了Cu-Fe/AC催化剂,表征了其形貌特征,考察了该催化剂催化湿式过氧化氢氧化(CWPO)处理苯酚废水的效果,应用响应面法(RSM)分析了COD去除率的影响因素。实验结果表明,在反应温度为80℃、反应停留时间为90 min、初始pH为3.1、H_(2)O_(2)加入量为2.2 g/L的条件下,COD去除率为82%;RSM结果表明,在反应温度为100℃、反应时间为64 min、初始pH为3.3、H_(2)O_(2)加入量为2.7 g/L的优化条件下,COD去除率可达86%;Cu-Fe/AC催化剂在重复使用4次后,对COD的去除率仍保持在80%以上,表现出良好的重复利用性能。

The Cu-Fe/AC catalyst was prepared by microwave-assisted synthesis,and its morphological characteristics were characterized.The treatment effect of phenol wastewater by catalytic wet hydrogen peroxide oxidation(CWPO)with the catalyst was investigated,and the factors affecting COD removal rate was analyzed by response surface method(RSM).The experimental results show that under the conditions of reaction temperature 80℃,reaction retention time 90 min,initial pH 3.1 and H_(2)O_(2) amount 2.2 g/L,the COD removal rate is 82%.The RSM results show that under the optimized conditions of reaction temperature 100℃,reaction time 64 min,initial pH 3.3 and H_(2)O_(2) amount 2.7 g/L,the COD removal rate can reach 86%.After the Cu-Fe/AC catalyst is reused for 4 times,the COD removal rate is still kept above 80%,showing good reusability.