超声-Fenton试剂联合降解水中十二烷基苯磺酸钠的研究

Degradation of Sodium Dodecyl Benzene Sulphonate (SDBS) in Aqueous Solution by Ultrasound and Fenton Reagent Oxidation

采用功率超声与Fenton试剂联合的新方法降解水中十二烷基苯磺酸钠(SDBS).实验研究了超声反应时间、硫酸亚铁用量、氧化剂H2O2用量和初始溶液pH值等因素对降解效果的影响.结果表明:在超声波频率59kHz、功率45W、反应时间45min、溶液起始pH值3、硫酸亚铁和双氧水质量浓度分别为0.65g/L和1.2g/L的最佳降解条件下,SDBS的降解率可达80%,说明超声-Fenton试剂联合法是一种有效降解SDBS的方法.

A new method of ultrasonic irradiation and Fenton reagent oxidation was applied to decompose sodium dodecyl benzene sulphonate (SDBS) in aqueous solution. Effects of sonication time, the weight of catalyst Fe and hydrogen peroxide, initial pH value on SDBS degradation efficiency were experimentally studied. The results showed that SDBS degradation efficiency could reach 80% in the optimum conditions: ultrasonic frequency is 59kHz, ultrasonic power is 45W, sonication time is 45 min, initial pH value is 3, the weight of catalyst Fe and hydrogen peroxide is 0.65g/L and 1.2g/L respectively. The experiment showed that it was an efficient method to decompose SDBS by ultrasound and Fenton reagent oxidation.