CuFe/BC活化缓释过硫酸盐降解金橙Ⅱ研究

Degradation of Orange Ⅱ by CuFe/BC Activated Sustained-release Persulfate

采用熔化成型法制备出了一种缓释氧化剂SRPS,并利用CuFe/BC为催化剂活化SRPS处理模拟染料废水金橙Ⅱ,考察了操作条件初始pH、CuFe/BC投加量、甘油加入量和SRPS投加量对金橙Ⅱ脱色效果的影响。结果表明,随初始pH的升高金橙Ⅱ脱色率先升高后逐渐降低;金橙Ⅱ脱色率随着CuFe/BC投加量、甘油加入量和SRPS投加量的增加而提高。在SRPS+CuFe/BC体系中存在活性物种·OH、SO_(4)^(·-)、O _(2)^(·-)和^(1)O_(2)。在催化剂循环使用实验中,CuFe/BC展现出了较好的重复利用性能。在SRPS+CuFe/BC体系中,金橙Ⅱ降解出水对发光菌发光强度的抑制率先升高后逐渐降低,说明SRPS+CuFe/BC体系对降解金橙Ⅱ是一种有效的方法。

A sustained-release persulfate agent(SRPS) was prepared by melt forming method. As the oxidant, CuFe/BC was used to activate SRPS and treat simulated dye wastewater Orange Ⅱ. The effect of operating parameters(such as initial pH,CuFe/BC dosage, glycerol dosage and SRPS dosage) on the Orange Ⅱ removal was evaluated. The decolorization efficiency of Orange Ⅱ firstly increased and then decreased with the increasing pH. The increase of CuFe/BC dosage, glycerol dosage and SRPS dosage improved the Orange Ⅱ decolorization rate. There are active species such as ·OH、SO _(4)^(·-)、O _(2)^(·-)and ^(1)O_(2) in SRPS + CuFe/BC system. CuFe/BC exhibited good catalytic performance during the reusability. The inhibition of the luminescent intensity of luminescent bacteria by the effluent of Orange Ⅱ degradation firstly increased and then gradually decreased. It illustrated that SRPS+CuFe/BC was an effective method for the degradation of Orange Ⅱ.