摘要
对超声辐射 Fenton试剂耦合法降解水中直链十二烷基苯磺酸钠进行了研究。采用单因子法考察了硫酸亚铁用量 ,氧化剂 H2 O2 用量 ,超声辐射反应温度和初始溶液 p H值等因素对降解率的影响 ;采用正交试验法优化降解条件 ,得出了各因素影响的显著性次序。在环境压力下 ,超声辐射频率 4 0 k Hz,超声辐射功率 5 0 0 W,反应时间 15 min,反应温度 95℃ ,溶液起始 p H值 3,降解物起始质量浓度 2 0 0 mg/L,硫酸亚铁与双氧水质量浓度分别为 0 .6 5 g/L和 1.2 g/L的最佳降解条件下 ,十二烷基苯磺酸钠的降解率可达 99.31%。研究结果表明 :超声波辐射 Fenton试剂耦合法是一种有效的降解十二烷基苯磺酸钠的方法。与 Fenton试剂氧化催化法相比 ,能够显著地缩短反应时间 。
The linear alkyl benzene sulfonate(LAS) was degraded by Fenton reagent oxidation under ultrasonic field radiation.The effect of treating condition,including the weight of catalyst Fe and hydrogen peroxide,the treatment temperature,the initial pH of LAS on the rate of degradation was studied by single factor method.The optimal technology of factors that affect the degradation efficiency of LAS and the remarkable sequence of these factors were optimized by orthogonal experiment.In the optimum conditions:the weigh of catalyst Fe and hydrogen peroxide is 0.65g/L and 1.2g/L respectively,the treatment time is 15 min,power of ultrasonic field radiation is 500W,the treatment temperature is 95℃,the initial pH is3,the initial concentration of LAS is 200mg/L,the rate of degradation of LAs can reach up to 99.31%.
出处
《重庆环境科学》
北大核心
2003年第9期10-13,共4页
Chongqing Environmental Science
基金
西安交通大学行动计划环境工程重点学科建设项目 (2 0 0 0 -1 2 )
关键词
十二烷基苯磺酸钠
超声辐射
FENTON试剂
降解
ultrasonic field radiation
fenton reagent
liner alkyl benzene sulfonate
degradation
