Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia; Universidad Nacional de Colombia, Sede Medellín, Facultad de Minas, Departamento de Geociencias y Medioambiente, Colombia.
Grupo de Investigación en Remediación Ambiental y Biocatálisis (GIRAB), Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín, Colombia.
Sci Total Environ. 2021 Apr 15;765:142699. doi: 10.1016/j.scitotenv.2020.142699. Epub 2020 Oct 3.
Contaminants of emerging concern (CECs), such as pharmaceuticals, personal care products, pesticides, synthetic and natural hormones and industrial chemicals, are frequently released into the environment because of the inability of conventional processes in municipal wastewater treatment plants to remove them. Some examples of alternative options to remove such pollutants are photo-Fenton and ozone-based processes, which are two techniques widely studied in Ibero-American countries. In fact, this region has been responsible for delivering frequently publications and conferences on advanced oxidation processes. This work is a critical review of recent developments in the intensification of the two aforementioned advanced oxidation techniques for CECs elimination in the Ibero-American region. Specifically for the photo-Fenton process (pF), this study analyses strategies such as iron-complexation with artificial substances (e.g., oxalic acid and ethylenediamine-N,N'-disuccinic acid) and natural compounds (such as humic-like substances, orange juice or polyphenols) and hybrid processes with ultrasound. Meanwhile, for ozonation, the enhancement of CECs degradation by adding hydrogen peroxide (i.e., peroxone), ultraviolet or solar light, and combining (i.e., photolytic ozonation) with catalysts (i.e., catalytic ozonation) was reviewed. Special attention was paid to how efficient these techniques are for removing contaminants from water matrices, and any potentialities and weak points of the intensified processes.
新兴关注污染物（CECs），如药品、个人护理产品、农药、合成和天然激素以及工业化学品，由于城市污水处理厂的常规工艺无法去除它们，经常被排放到环境中。去除此类污染物的替代方法的一些示例是光芬顿和臭氧基工艺，这是在伊比利亚-美洲国家广泛研究的两种技术。事实上，该地区经常发表关于高级氧化工艺的出版物和会议。这项工作是对伊比利亚-美洲地区强化上述两种高级氧化技术以去除 CECs 的最新进展的批判性回顾。具体来说，对于光芬顿工艺（pF），本研究分析了铁与人工物质（如草酸和乙二胺二琥珀酸）和天然化合物（如类腐殖质、橙汁或多酚）的络合以及与超声的混合工艺等策略。同时，对于臭氧氧化，通过添加过氧化氢（即过氧单硫酸盐）、紫外线或太阳光，以及与催化剂（即催化臭氧氧化）结合（即光解臭氧氧化）来增强 CECs 的降解，这也得到了回顾。特别关注这些技术从水基质中去除污染物的效率，以及强化工艺的任何潜力和弱点。
