| Title: | Acetaldehyde removal using an atmospheric non-thermal plasma combined with a packed bed: role of the adsorption process |
| Author(s): | Klett C; Duten X; Tieng S; Touchard S; Jestin P; Hassouni K; Vega-Gonzalez A; |
| Address: | "LSPM-CNRS UPR 3407, Universite Paris 13, Sorbonne Paris Cite, 99 Avenue Jean Baptiste Clement Villetaneuse 93430, France. Chemistry Department, Royal University of Phnom Penh, Russian Federation Boulevard, Toul Kork, Phnom Penh, Cambodia. LSPM-CNRS UPR 3407, Universite Paris 13, Sorbonne Paris Cite, 99 Avenue Jean Baptiste Clement Villetaneuse 93430, France. Electronic address: arlette.vega@lspm.cnrs.fr" |
| DOI: | 10.1016/j.jhazmat.2014.07.014 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "This work is an attempt in order to help towards understanding the influence of the adsorption process on the removal of a VOC (acetaldehyde, CH3CHO) using cyclic non thermal plasma (NTP) combined with a packed-bed of a catalyst support, alpha-Al2O3. In the first part, the results obtained by placing the saturated alumina pellets inside the plasma discharge zone are discussed, in terms of acetaldehyde removal, CO and CO2 production. In the second part, adsorption of CH3CHO, CO, CO2 and O3 was carried out, from single and multicomponent mixtures of the different compounds. The results showed that (i) the adsorption capacities followed the order CH3CHO>> CO2>CO; (ii) O3 was decomposed on the alumina surface; (iii) CO oxidation occurred on the surface when O3 was present. In the third part, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) was used to follow the alumina surface during acetaldehyde adsorption. DRIFTS measurements demonstrated that besides the bands of molecularly adsorbed acetaldehyde, several absorptions appeared on the spectra showing the intermediate surface transformation of acetaldehyde already at 300K. Finally, the relationship between the adsorption results and the NTP combined with a packed-bed process is discussed" |
| Keywords: | "Acetaldehyde/*isolation & purification Adsorption Air Pollutants, Occupational/*isolation & purification Aluminum Oxide/chemistry Carbon Dioxide/chemistry Carbon Monoxide/chemistry Catalysis Ozone/chemistry Plasma Gases/*chemistry Surface Properties Volat;" |
| Notes: | "MedlineKlett, C Duten, X Tieng, S Touchard, S Jestin, P Hassouni, K Vega-Gonzalez, A eng Research Support, Non-U.S. Gov't Netherlands 2014/07/30 J Hazard Mater. 2014 Aug 30; 279:356-64. doi: 10.1016/j.jhazmat.2014.07.014. Epub 2014 Jul 17" |
