Albendazole Degradation Possibilities by UV-Based Advanced Oxidation Processes

Abstract

Pharmaceuticals are present in an aquatic environment usually in low (ng/L) concentrations. Their continuous release can lead to unwanted effects on the nontarget organisms. The main points of their collection and release into the environment are wastewater treatment plants. The wastewater treatment plants should be upgraded by new technologies, like advanced oxidation processes (AOPs), to be able to degrade these new pollutants. In this study, the degradation of albendazole (ALB), a drug against parasitic helminths, was investigated using four UV-based AOPs: UV photolysis, UV photocatalysis (over TiO2 film), UV + O3, and UV + H2O2. The ranking of the degradation process degree of the ALB and its degradation products for studied processes is as follows: UV photolysis < UV photocatalysis with TiO2 < UV + O3 < UV + H2O2. The fastest degradation of ALB and its degradation products was obtained by UV-C + H2O2 process with a degradation efficiency of 99.95%, achieved in 15 minutes.

Synthesis, Characterization, and Photocatalytic Properties of Sol-Gel Ce-TiO₂ Films

“…Wastewater released into the environment can have an extremely harmful effect on the nature and well-being of living creatures. Research showed that the most significant amount of pharmaceuticals released into the environment came from wastewater treatment plants [1,2]. The primary sources of pollution are thus sewage collected from households, hospitals, etc.…”