Diisobutyl phthalate (DiBP) is a phthalate esters (PAEs), often used as a plasticizer. DiBP is frequently detected in the atmosphere, water, and soil around the world, and it has been reported to be reproductive toxicity to humans and animals. Compared to biological and physical methods, the advanced oxidation process is a promising process for DiBP degradation. In this study, the degradation of DiBP by electro-Fenton process with sacrificial anode oxidation was evaluated. The results showed that the DiBP in water can be effectively removed by electro-Fenton process in 45 min, and the degradation rate can reach 93.07 % under the optimal degradation conditions (pH = 5, plate spacing = 5 cm, initial current = 1 A, electrolyte Na₂SO₄ = 2 g/L, and H₂O₂ addition amount = 40 μL). In addition, the effects of humic acid (HA) and calcium ions (Ca²⁺) were investigated, which indicated that each of them can inhibit the degradation of DiBP while HA can also change the attack site of DiBP by hydroxyl radicals (OH), leading to an increase in the degradation products. Electro-Fenton process with sacrificial anode may be a promising advanced oxidation technology for DiBP treatment.

邻苯二甲酸二异丁酯（DiBP）是邻苯二甲酸酯（PAE），通常用作增塑剂。在世界各地的大气，水和土壤中经常检测到DiBP，据报道它对人类和动物具有生殖毒性。与生物和物理方法相比，高级氧化工艺是一种有前途的DiBP降解工艺。在这项研究中，通过牺牲阳极氧化的电芬顿工艺对DiBP的降解进行了评估。结果表明，电芬顿法可在45 min内有效去除水中的DiBP，在最佳降解条件下（pH = 5，板间距= 5 cm，初始电流= 1 A），降解率可达93.07％。 ，电解质Na ₂ SO ₄ = 2 g / L和H ₂ O₂添加量= 40μL）。此外，研究了腐殖酸（HA）和钙离子（Ca ²⁺）的作用，表明它们均能抑制DiBP的降解，而HA还能改变羟基自由基（O H ），导致降解产物增加。牺牲阳极电芬顿工艺可能是一种有前途的先进氧化技术，用于DiBP处理。