【摘要】 采用最高的电化学稳定性钛基镀IrO2/Ta2O5为阳极,以石墨为阴极,通过外加Fe2+,构成一种新的高效电Fenton体系对难降解有机物对硝基酚(4NP)废水进行了降解研究。在最佳工艺条件:恒电流0.3A,Na2SO4浓度3g/L,Fe2+浓度为1mmoL/L,曝气量40mL/min,初始pH为5.30对100mg/L的4NP电解2h,COD去除率达84%。并且钛基镀IrO2/Ta2O5阳极相对于目前常用的Pt、PbO2等阳极具有特有的优势,为废水处理中选择新型阳极材料和新的反应体系提供了新思路。更多还原

【Abstract】 Simulated wastewater of 4-nitrophenol （4NP） was electrolyzed by a new system combined IrO₂/Ta₂O₅ as anode and graphite as cathode. Ferrous ion was introduced to generate an effective Fenton reaction. Under the optimum conditions of current 0.3A, pH 5.30, air flow rate 40mL/min, c (Na₂SO₄) 3g/L and c (Fe²⁺) 1mmoL/L, the final removal of COD could be up to 84% for the degradation of 100mg/L 4NP in 2h. IrO₂/Ta₂O₅ anode has some advantages over anode of Pt and PbO₂, which presents a new way for the option of anode in wastewater treatment.更多还原