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SFGP 2007 -- A New Concept for the Abatement of Volatile Organic Compounds by a Two-Stage Process Combining Non-Thermal Plasma Treatment and Filtration
1Université Pierre-et-Marie-Curie, Paris 6, firstname.lastname@example.org
2Université Pierre-et-Marie-Curie, Paris 6, email@example.com
3Université Pierre-et-Marie-Curie, Paris 6, firstname.lastname@example.org
4Université Pierre-et-Marie-Curie, Paris 6, email@example.com
Citation Information: International Journal of Chemical Reactor Engineering. Volume 6, Issue 1, Pages –, ISSN (Online) 1542-6580, DOI: 10.2202/1542-6580.1687, March 2008
- Published Online:
A new process combining non-thermal plasma treatment and filtration has been studied for the treatment of diluted gaseous effluents containing VOCs. The removal of a VOC model molecule, beta-pinene, in air was studied. The results showed that the pollutant was chemically modified by soft oxidation reactions in the plasma treatment step and that the resulting products could be trapped on a filter with high efficiency. As a result, the process was less energy-consuming compared to complete oxidation. The pollutant could be injected before or after the discharge zone without affecting the performance of the process. Nopinone, identified by GC-MS analyses, is the main product of the plasma treatment step. It was hypothesized that this product results from the oxidation of beta-pinene by 'excited' ozone produced by the discharge and the destruction of beta-pinene. The product was therefore modelled by a second-order reaction between beta-pinene and ozone. In the second part of this work, a semi-industrial scale pilot capable of treating a gas flowrate of 50 m3/h was built. The pilot was designed with the assistance of process simulations made by coupling a flow model (obtained by a CFD code) and the previous kinetic model. The results show that the performances of the pilot measured experimentally were in agreement with the predicted ones.