Petre, A. and Carbajo, J.B. and Rosal, R. and García-Calvo, E. and Perdigón-Melón, J.A. (2013) CuO/SBA-15 catalyst for the catalytic ozonation of mesoxalic and oxalic acids. Water matrix effects. Chemical Engineering Journal, 225. pp. 164-173. ISSN 13858947
Full text not available from this repository.Abstract
The depletion of mesoxalic and oxalic acids, two of the main by-products of wastewater ozone treatment, was studied in non-catalytic and catalytic ozonation using copper oxide supported on mesoporous silica SBA-15 as catalyst. The influence of the main inorganic anions present in natural and STP effluents (bicarbonates, sulphates, chlorides and phosphates) was also studied. The non-catalytic reaction rate was strongly dependent on the presence of inorganic anions and it was also almost inhibited by the presence of particulate material. Catalysed ozonation not only accelerates organic acid depletion, but was almost unaffected by the presence of these inorganic anions, or by the presence of suspended solids. The efficiency of catalytic and non-catalytic ozonation for depletion of both acids was studied in a real STP effluent. The depletion of mesoxalic acid was considerably slowed down in non-catalysed reactions, whereas under catalysed conditions it was not affected. Oxalate depletion was dominated by the formation with calcium of an insoluble salt, the precipitation equilibrium of which reversed only in the presence of a catalyst.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Silica-based ordered mesoporous materials; Copper oxide; Ozonation; Oxalic and mesoxalic acids; Wastewater |
| Subjects: | Q Science > QD Chemistry T Technology > TD Environmental technology. Sanitary engineering T Technology > TP Chemical technology |
| Depositing User: | José Ángel Gómez Martín |
| Date Deposited: | 24 Oct 2013 16:53 |
| Last Modified: | 24 Oct 2013 16:53 |
| URI: | http://eprints.imdea-agua.org:13000/id/eprint/335 |
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