过硫酸钾氧化去除水和土壤中的苯胺

Aniline Degradation in Water and Soils by Potassium Persulfate

摘要: 以过硫酸钾为氧化剂去除水和土壤中的苯胺，考察了反应温度、氧化剂浓度、初始pH等因素对氧化效果的影响。结果表明，当反应温度为40 ℃、过硫酸钾浓度为103.0 mmol/L，初始pH为5~11时，水中苯胺的降解效果最佳，降解率可达94.1%。当反应温度为40 ℃，过硫酸钾浓度为1.2 mol/L时，土壤中苯胺的降解率达到98.9%。表明过硫酸钾能够有效去除水和土壤中的苯胺，可作为苯胺污染物应急处置的一种可能的方法。

Abstract: The degradation of aniline by potassium persulfate was investigated in aqueous solutions and soils. The influence factors such as the temperature, oxidant concentration and initial pH were explored. The results indicated that in aqueous solutions, under the conditions of reaction temperature of 40 ℃, potassium persulfate concentration of 103.0 mmol/L and pH range of 5-11, the optimal aniline degradation effect could be obtained with aniline degradation efficiency of 94.1%. The results showed that the removal of aniline could reach 98.9% at the condition of 40 ℃ with potassium persulfate concentration of 1.2 mol/L. Therefore potassium persulfate can be used to effectively degrade the aniline in water and soils, which provides a possible approach for the emergency management of aniline contaminant.