催化剂活化过二硫酸盐降解双酚A的研究  

Study on Degradation of Bisphenol A by Catalyst Activation Persulfate

作　　者：张乐 ZHANG Le(Sichuan Yinda Jimin Water Resources Development Co.,Ltd.,Chengdu 610000,China)

机构地区：[1]四川省引大济岷水资源开发有限责任公司,成都610000

出　　处：《四川环境》2024年第4期140-149,共10页Sichuan Environment

摘　　要：随着工业发展,人类的生产生活导致了严重的水污染,双酚A是一种难以处理的污染物,其中高级氧化技术具有较好的处理应用价值。通过制备N掺杂石墨碳包覆Fe纳米颗粒催化剂(Fe-NC-G-700)来活化过二硫酸盐(PDS)降解水体中环境激素BPA。首先优化了催化剂焙烧温度。随后,使用单因素控制法优化了催化剂添加量、PDS添加量、反应温度和溶液初始pH值等主要工艺参数,其最佳工艺条件为:Fe-NC-G-700=200 mg/L,PDS=0.378 mM,反应温度为30℃,初始pH=6.5。同时考察了共存无机阴离子对BPA降解的影响(HCO^(-)_(3)、Cl^(-)、H_(2)PO^(-)_(4)和NO^(-)_(3)),说明Fe-NC-G-700/PDS体系对无机阴离子有较强的抗性。此外,对照实验显示所制备的Fe-NC-G-700具有很好的活化PDS能力。同时,淬灭实验结果表明Fe-NC-G-700/PDS体系中主要活性氧(ROS)为超氧自由基和单线态氧。With the industrial development,human production and life have led to serious water pollution.BPA is a pollutant requiring great disposal efforts.However,the advanced oxidation technology is of good treatment application value.In this paper,Fe nanoparticle catalyst(Fe-NC-G-700) coated with N-doped graphite carbon was prepared to activate persulfate(PDS) to degrade BPA.Firstly,the calcination temperature of catalysts was optimized.Then,catalyst dosage,PDS dosage,reaction temperature and initial pH value were optimized through the single factor control method.The optimum reaction conditions were as follows:Fe-NC-G-700 = 200 mg/L,PDS = 0.378 mM,reaction temperature = 30℃,initial pH = 6.5.The effect of co-existing inorganic anions(HCO_(3)^(-),Cl^(-),H_(2)PO_(4)^(-) and NO_(3)^(-) on the degradation of BPA was also investigated.The results indicated that the Fe-NC-G-700/PDS system had excellent resistance to inorganic anions.In addition,control experiments showed that the prepared Fe-NC-G-700 had good PDS activation ability.Meanwhile,the quenching experiment results displayed that the main reactive oxygen species(ROS) in the Fe-NC-G-700/PDS system were superoxide radicals and singlet oxygen.

关 键 词：环境激素 双酚A 高级氧化法 过二硫酸盐 铁基催化剂 

分 类 号：X13[环境科学与工程—环境科学]