Pharmaceuticals degradation by advanced oxidation process based in H2O2 photolysis (H2O2/UV)
DOI:
https://doi.org/10.6008/CBPC2674-6425.2022.001.0001Keywords:
Advanced oxidation processes, H2O2/UV, PharmaceuticalsAbstract
In the recent years, there has been an increase in the use of pharmaceuticals around the World. As result, many compounds are not removed properly in wastewater and water treatment. Due to health risks related to the concentration of residual compounds related to pharmaceuticals, there has been interest in searching for degradation processes that act in these types of compounds. Among the options, the advanced oxidation processes (AOP) are highlighted as promising. In this review, the focus is in the UV/H2O2 process, which is a process that has some advantages related do solubility, accessibility and stability of the chemical reagent. It was collected data concerning published papers in the years of 2017 to 2021 and analyzed in terms of operational conditions, type of pharmaceuticals, degradation analysis methods, removal efficiency and the association of different processes. The bibliographic research was held in data base such as Scopus, Scifinder, Web of Science and Periódicos Capes. It was noticed that there are some different approaches that influences in the results and in the operational conditions, such as the higher demand for hydrogen peroxide and UV dosage in works that aim to study mineralization. It is important to highlight, also, the occurrence of the increase of toxicity following the degradation step, in a way that it reinforces the importance of checking the toxicity of the treated sample to evaluate the viability of this process.
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