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Electric field induced activated carbon fiber (ACF) cathode transition from an initiator/a promoter into an electrocatalyst in ozonation process.
- Source :
-
Chemical Engineering Journal . Nov2016, Vol. 304, p129-133. 5p. - Publication Year :
- 2016
-
Abstract
- Removal of nitrobenzene (NB), a carcinogenic and refractory pollutant, in aqueous solution by adsorption, ozonation, electrolysis, and electro-peroxone (E-peroxone) with activated carbon fiber (ACF) was investigated, respectively. Kinetic analyses of NB removal by all the processes followed pseudo-first-order kinetics and the K app of E-peroxone-ACF was 14.90 × 10 −2 min −1 , which was much higher than the others. Besides, the K app of E-peroxone-ACF process reduces slightly to 12.18 × 10 −2 min −1 even after 100 times of ACF recycle, showing a sustainable activity. Moreover, according to the pore texture characteristics, surface functional groups, FTIR, and SEM images, E-peroxone process does not considerably alter the ACF surface, whereas ozone alone can cause substantial damage to it. These results suggested that ACF was induced from an initiator/a promoter into an electrocatalyst in ozonation by free electrons injection. Moreover, comparing with titanium cathode, ACF can remarkably improve the removal of NB in E-peroxone due to the synchronous adsorption of pollutants and ozone as well as the enhancement of H 2 O 2 generation. It indicates that the ACF cathode is a promising material for organic pollutants removal in the E-peroxone process. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13858947
- Volume :
- 304
- Database :
- Academic Search Index
- Journal :
- Chemical Engineering Journal
- Publication Type :
- Academic Journal
- Accession number :
- 118074607
- Full Text :
- https://doi.org/10.1016/j.cej.2016.06.079