EUDIM, Escuela Universitaria de Ingeniería Mecánica, Universidad de Tarapacá, Av. General Velásquez 1775, Arica, Chile.
CIESOL, Joint Centre University of Almería-CIEMAT, Almería, Spain.
Water Res. 2019 Dec 1;166:115037. doi: 10.1016/j.watres.2019.115037. Epub 2019 Aug 31.
This paper deals with the removal of two last-resort antibiotics, namely imipenem and meropenem, in aqueous solutions employing heterogeneous photocatalysis with TiO under natural solar radiation at pilot plant scale. It was found that TiO photocatalysis is a very efficient technique for the degradation of both compounds in aqueous solutions, albeit it's relatively low quantum efficiency. At the experimental conditions employed in the present work (compound parabolic collectors photoreactor) the optimal TiO concentration was about 50 mg L. Experiments conducted in various aqueous matrices lead to the conclusion that the method can be applied to real aqueous matrices, such as natural waters and wastewaters. The comparison of TiO photocatalysis and natural photolysis showed an important decrease of the accumulated energy required to achieve the complete removal of both antibiotics which, in terms of normalized illumination time (t), represented a reduction of 50 min for imipenem and 60 min for meropenem.
本文研究了在中试规模下，利用 TiO 多相光催化技术在自然光下去除两种最后手段抗生素——亚胺培南和美罗培南。结果表明，TiO 光催化技术是一种非常有效的方法，可以在水溶液中降解这两种化合物，尽管其量子效率相对较低。在本工作中所采用的实验条件下（复合抛物面集光器光反应器），最佳的 TiO 浓度约为 50mg/L。在各种水基质中的实验得出的结论是，该方法可以应用于实际的水基质，如天然水和废水。TiO 光催化和自然光解的比较表明，为了实现两种抗生素的完全去除，所需的累积能量有了显著的减少，以归一化光照时间（t）计，亚胺培南减少了 50 分钟，美罗培南减少了 60 分钟。
