采用乙二胺二琥珀酸(EDDS)强化Fe³⁺/H₂O₂体系降解罗丹明B废水,探究了H₂O₂浓度、Fe³⁺浓度和EDDS浓度对罗丹明B去除率的影响,并用响应曲面法对以上3个因素进行优化,预测的最佳条件为H₂O₂浓度0.62 mmol/L、Fe³⁺浓度 0.43 mmol/L、EDDS浓度0.29 mmol/L,在该条件下预测的罗丹明B的去除率为90.15%,验证实验的平均去除率为89.28%,相对偏差为0.97%。由三维荧光光谱和紫外-可见光谱扫描结果可知,罗丹明B在反应过程中被有效降解。

The ethylenediamine-N,N'-disuccinic acid (EDDS) strengthened Fe³⁺/H₂O₂ system is applied to degrade rhodamine B (Rh B) wastewater.The effects of the concentrations of H₂O₂,Fe³⁺ and EDDS on Rh B removal efficiency are investigated,and response surface methodology (RSM) is employed to optimize these three factors.The predicted optimal concentrations for H₂O₂,Fe³⁺ and EDDS are 0.62 mmol·L^-1,0.43 mmol·L^-1 and 0.29 mmol·L^-1,respectively,under which the predicted Rh B removal efficiency is 90.15%.The average Rh B removal efficiency by verification test is 89.28%,which has a deviation of 0.97% compared with the predicted value.Rhodamine B has been effectively degraded during the reaction according to three-dimension excitation emission matrix fluorescence spectroscopy (3D-EEM) and UV-Vis spectrum results.

赵佳(1996-),女,硕士生,研究方向为污水处理,1213723995@qq.com