Journal
WATER RESEARCH
Volume 45, Issue 11, Pages 3407-3416Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2011.03.057
Keywords
Non-thermal plasma; Dielectric barrier discharge; Antibiotics; Water pollutants removal
Funding
- UEFISCSU [ID-223]
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The decomposition of three p-lactam antibiotics (amoxicillin, oxacillin and ampicillin) in aqueous solution was investigated using a dielectric barrier discharge (DBD) in coaxial configuration. Solutions of concentration 100 mg/L were made to flow as a film over the surface of the inner electrode of the plasma reactor, so the discharge was generated at the gas-liquid interface. The electrical discharge was operated in pulsed regime, at room temperature and atmospheric pressure, in oxygen. Amoxicillin was degraded after 10 min plasma treatment, while the other two antibiotics required about 30 min for decomposition. The evolution of the degradation process was continuously followed using liquid chromatography-mass spectrometry (LC-MS), total organic carbon (TOC) and chemical oxygen demand (COD) analyses. (C) 2011 Elsevier Ltd. All rights reserved.
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