Zúñiga-Benítez Henry, Peñuela Gustavo A
Grupo GDCON, Facultad de Ingeniería, Sede de Investigación Universitaria (SIU), Universidad de Antioquia, Calle 70 No. 52-21, Medellín, Colombia E-mail:
Water Sci Technol. 2016;73(4):818-26. doi: 10.2166/wst.2015.493.
Ethylparaben (EPB) has been classified by different research groups as a potential endocrine-disrupting chemical, implying that it can potentially interfere with the normal balance of the endocrine system of living beings, which with its presence in different effluents, including drinking water, generates the need to seek methods that allow its removal from different water bodies. Advanced oxidation processes have been employed widely to remove organic compounds from different matrices. In this way, Fenton technology (process based on the reaction between ferrous ions and hydrogen peroxide) has been able to degrade different substrates, but due to the Fe(2+) requirements to carry out the reaction optimally, combination of the conventional Fenton process with visible light radiation (photo-Fenton) is an alternative used in the treatment of pollution due to the presence of chemicals. In this way, the effectiveness of photo-Fenton on EPB degradation was assessed using a face-centered central composite experimental design that allowed assessment of the effects of Fe(2+) and H2O2 initial concentrations on process. In general, results indicated that after 180 min of reaction almost all EPB was eliminated, the dissolved organic carbon in solution was reduced and the sample biodegradability index was increased.
对羟基苯甲酸乙酯（EPB）已被不同的研究小组归类为一种潜在的内分泌干扰化学物质，这意味着它可能会干扰生物内分泌系统的正常平衡。由于其存在于包括饮用水在内的不同污水中，因此需要寻找能将其从不同水体中去除的方法。高级氧化工艺已被广泛用于从不同基质中去除有机化合物。通过这种方式，芬顿技术（基于亚铁离子与过氧化氢之间反应的工艺）能够降解不同的底物，但由于最佳进行反应需要Fe(2+)，传统芬顿工艺与可见光辐射相结合（光芬顿）是处理因化学物质存在而造成污染的一种替代方法。通过这种方式，使用面心中央复合实验设计评估了光芬顿对EPB降解的有效性，该设计允许评估Fe(2+)和H2O2初始浓度对该过程的影响。总体而言，结果表明，反应180分钟后，几乎所有的EPB都被去除，溶液中的溶解有机碳减少，样品的生物降解性指数增加。
