A novel process involving the simultaneous electrochemical-oxidation (EO) and electrosynthesis of ferrate has been investigated for the treatment of the commonly detected and recalcitrant pesticide, atrazine. The present study considered the electrosynthesis of ferrate, in neutral pH, using low concentration iron (Fe²⁺) representative of raw water levels and its subsequent effect on atrazine degradation. Ferrate synthesis was unaffected by current density (10-80 mA cm^-2), indicating mass transport limitations. Synthesis was affected by the initial iron concentration, whereby 0.051, 0.108 and 0.332 mg L^-1 was generated with an Fe²⁺ concentration of 0.5, 1.0 and 3.0 mg L^-1, respectively. When operating under simultaneous EO and ferrate oxidation, atrazine degradation exceeded that of a solely EO process. From an initial concentration of 2.00 mg L^-1, atrazine was degraded to 1.34, 1.05 and 0.51 mg L^-1 during 10, 40 and 80 mA cm^-2, characterised by pseudo-first-order kinetics. Degradation with electrochemically-generated ferrate could be described by second-order kinetics, and yielded a degradation rate constant of 23.5 M^-1s^-1. The effect of natural organic matter (NOM) on atrazine degradation was also investigated. Ferrate was observed to be mostly scavenged by resorcinol, a representative NOM compound, having a second-order reaction rate constant of 9.71 ×102 M^-1 s^-1.

研究了一种同时进行高铁酸盐的电化学氧化（EO）和电合成的新方法，用于处理常见的难降解农药阿特拉津。本研究考虑了在中性pH下使用代表原水水平的低浓度铁（Fe ²⁺）进行高铁酸盐的电合成及其对degradation去津降解的影响。高铁酸盐的合成不受电流密度（10-80 mA cm ^-2）的影响，表明质量传输的局限性。合成受到初始铁浓度的影响，从而生成0.051、0.108和0.332 mg L ^-1，其中Fe ²⁺浓度为0.5、1.0和3.0 mg L ^-1， 分别。在同时进行EO和高铁酸盐氧化的条件下操作时，at去津的降解超过单独的EO工艺。在10、40和80 mA cm ^-2期间，at去津从初始浓度2.00 mg L ^-1降解为1.34、1.05和0.51 mg L ^-1，其特征为拟一级动力学。电化学生成的高铁酸盐的降解可以通过二级动力学来描述，并且降解速率常数为23.5 M ^-1 s ^-1。还研究了天然有机物（NOM）对at去津降解的影响。观察到高铁酸盐主要被间苯二酚（一种代表性的NOM化合物）清除，其二阶反应速率常数为9.71×102 M ^-1s ^-1。