Environ Technol. 2014 Mar-Apr;35(5-8):966-72. doi: 10.1080/09593330.2013.857699.
Bisphenol A (BPA) is a kind of a controversial endocrine disruptor, and is ubiquitous in environment. The degradation of BPA with the heterogeneous photo-Fenton system was demonstrated in this study. The Fe-Y molecular sieve catalyst was prepared with the ion exchange method, and it was characterized by X-ray radiation diffraction (XRD). The effects ofpH, initial concentration of H2O2, initial BPA concentration, and irradiation intensity on the degradation of BPA were investigated. The service life and iron solubility of catalyst were also tested. XRD test shows that the major phase of the Fe-Y catalyst was Fe2O3. The method of heterogeneous photo-Fenton with Fe-Y catalyst was superior to photolysis, photo-oxidation with only hydrogen, heterogeneous Fenton, and homogeneous photo-Fenton approaches. pH value had no obvious effects on BPA degradation over the range of 2.2-7.2. The initial concentration of H2O2 had an optimal value of 20 x 10(-4) mol/L. The decrease in initial concentration of BPA was favourable for degradation. The intensity of ultraviolet irradiation has no obvious effect on the BPA removal. The stability tests indicated that the Fe-Y catalyst can be reused and iron solubility concentration ranged from NA to 0.0062 mg/L. Based on the results, the heterogeneous photo-Fenton treatment is the available method for the degradation of BPA.
双酚 A (BPA) 是一种有争议的内分泌干扰物，在环境中普遍存在。本研究证明了非均相光芬顿体系对 BPA 的降解作用。采用离子交换法制备了 Fe-Y 分子筛催化剂，并采用 X 射线衍射（XRD）进行了表征。考察了 pH 值、H2O2 初始浓度、BPA 初始浓度和辐照强度对 BPA 降解的影响。还测试了催化剂的使用寿命和铁溶出率。XRD 测试表明，Fe-Y 催化剂的主要相为 Fe2O3。Fe-Y 催化剂的非均相光芬顿法优于光解、只有氢的光氧化、非均相芬顿和均相光芬顿法。pH 值在 2.2-7.2 范围内对 BPA 降解没有明显影响。H2O2 的初始浓度为 20 x 10(-4) mol/L 时有最佳值。BPA 初始浓度的降低有利于降解。紫外线辐照强度对 BPA 去除没有明显影响。稳定性测试表明，Fe-Y 催化剂可以重复使用，铁溶出浓度范围为 NA 至 0.0062 mg/L。基于这些结果，非均相光芬顿处理是降解 BPA 的有效方法。
