Dehalogenation of Polyhalogenated Compounds Dissolved in Organic Solvents with the Help AOPs in a Two-Phase Solvent-Water System Under Influence of Ultrasound

0353200 - ÚCHP 2011 GR eng C - Conference Paper (international conference)
Kaštánek, František - Sobek, Jiří - Šolcová, Olga - Hájek, Milan
Dehalogenation of Polyhalogenated Compounds Dissolved in Organic Solvents with the Help AOPs in a Two-Phase Solvent-Water System Under Influence of Ultrasound.
Proceedings. -: -, 2010 - (Gidarakos, E.; Cossu, R.; Stegmann, R.), s. 229. ISBN N.
[International Conference on Hazardous and Industrial Waste Management /2./. Chania, Crete (GR), 05.10.2010-08.10.2010]
R&D Projects: GA ČR GD203/08/H032; GA AV ČR KAN100400701
Institutional research plan: CEZ:AV0Z40720504
Keywords : dehalogenation * two-phase system * fenton
Subject RIV: CI - Industrial Chemistry, Chemical Engineering
http://www.hwm1.tuc.gr/

Laboratory tests were performed on the decomposition of polychlorinated biphenyls contained in transformer oil and BDE209 in hexane. The Fenton reaction was selected as AOP. several two-phase mixtures with different ratios of aqueous and organic phase were prepared. Ultrasound radiation was applied in order to increase the interfacial area. Experiments showed that a reaction with active radicals can take place also in system with relatively large volumes of the organic phase. The most appropriate ratio of the organic to the aqueous phase proved to be 3:1. Dehalogenation efficiency was higher when the reaction took place under the influence of ultrasound compared to dehalogenation efficiency of a mechanically stirred mixture.
Permanent Link: http://hdl.handle.net/11104/0192512