Analysis of hydrodynamic cavitation intensified with ozone and UV radiation to decrease the concentration of carbamazepine in aqueous solution

Abstract

Carbamazepine (CBZ) is a drug used for the treatment of epilepsy and other disorders related to mood, including bipolar disorder and neuralgia. However, its presence in bodies of water has negative impacts on both living beings and the ecosystem. Due to stable structure is not completely absorbed in the human body and consequently, it is discarded and deposited into the water resources. The different ways for treating it are usually inefficient and very expensive. Therefore, the treatment by hydrodynamic cavitation (HC) with UV and O3 has been carried out. The factors and corresponding levels selected in the experimental design were, the initial pH of the solution [5,7and9] and initial concentration of CBZ (4 g/m3, 6 g/m3 and 8 g/m3). Despite the fact the fact that the maximum degradation of CBZ was 22.03 % at an initial pH of 7 and an initial concentration of 6 g/m3, it was determined that the process did not completely mineralize the CBZ since TOC (Total Organic Carbon) removal was not observed.

Keywords

• Carbamazepine
• Hydrodynamic cavitation
• Treatment water
• Emerging pollutants