Investigation of reaction mechanism for the degradation of pharmaceutical residues by pulsed corona discharges generated in water (2st Annual Meeting of COST Action TD 1208 )

0455312 - ÚFP 2016 RIV ES eng O - Others
Banaschik, R. - Lukeš, Petr - Kolb, J.F. - Bednarski, P. - Miron, C. - Weltmann, K.-D.
Investigation of reaction mechanism for the degradation of pharmaceutical residues by pulsed corona discharges generated in water (2st Annual Meeting of COST Action TD 1208 ).
2015
R&D Projects: GA MŠMT(CZ) LD14080
Grant - others:European Cooperation in Science and Technology(XE) COST TD1208
Institutional support: RVO:61389021
Keywords : pulsed corona * plasma * pharmaceutical residues
Subject RIV: BL - Plasma and Gas Discharge Physics

We have found that pulsed corona discharges that are generated in a coaxial geometry directly in water are able to degrade a wide range of pharmaceutical residues, which are known to be problematic for water purification systems (diclofenac, ibuprofen, 17α-ethinylestradiol, carbamazepine, diatrizoate, diazepam, and trimethoprim). These pharmaceuticals were degraded by 45% - 99% for treatment times between 15 - 66 minutes, depending on the individual compound. Furthermore we studied and distinguished between different reaction pathways using a chemical model system (500 µM phenol) in combination with HPLC-DAD to identify degradation mechanisms. This way we were able to identify the attack by hydroxyl radicals as the main reaction pathway in our system.
Permanent Link: http://hdl.handle.net/11104/0255936