活性炭载羟基铁协同H_(2)O_(2)类芬顿降解活性艳红X-3B

Fenton-like degradation of Reactive Brilliant Red X-3B by activated carbon-supported hydroxyl iron and H_(2)O_(2)

以活性炭为媒介,采用浸渍法制备了活性炭载羟基铁催化材料(FeOOH@AC),并协同双氧水类芬顿降解活性艳红X-3B染料。在pH=7、FeOOH@AC质量浓度1 g/L、H_(2)O_(2)浓度10 mmol/L的反应条件下,FeOOH@AC+H_(2)O_(2)体系对活性艳红X-3B的降解率达98.2%,相较AC和FeOOH@AC体系提高了17.2和3.7倍。初始pH试验表明,对活性艳红X-3B,FeOOH@AC+H_(2)O_(2)体系不仅在酸性条件下具有很好的降解能力,在碱性条件下(pH=9)的降解率可达83.6%,表现出较宽的pH适用范围。另外,4次循环试验后,FeOOH@AC对活性艳红X-3B的降解率仍大于60%。对其用盐酸洗脱并重新负载FeOOH,可再生。

Using activated carbon as a medium,an activated carbon-supported goethite catalyst material(FeOOH@AC)is prepared by impregnation method.It is used to Fenton-like degradation of Reactive Brilliant Red X-3B in corperation with H_(2)O_(2).Under the reaction conditions of pH of 7,FeOOH@AC 1 g/L,H_(2)O_(2)10 mmol/L,the degradation rate of Reactive Brilliant Red X-3B by FeOOH@AC+H_(2)O_(2) system reaches 98.2%,which is 17.2 and 3.7 times higher than that of AC and FeOOH@AC system.The initial pH experiment shows that for Reac⁃tive Brilliant Red X-3B,the FeOOH@AC+H_(2)O_(2) system not only has good degradation ability under acidic condi⁃tions,but also has a degradation rate of 83.6%under alkaline conditions(pH=9),showing a wide range of pH use.Additionally,after 4 cycle experiments,the degradation rate of Reactive Brilliant Red X-3B is still higher than 60%.It can be regenerated by washing away with hydrochloric acid and reloading with FeOOH.