Modeling approach to phenol oxidation by a sand-based packed-bed electrode system (SPBEs)
A comparative study of phenol oxidation using pure electrolysis (PEs) and sand-based packed-bed electrode systems (SPBEs) was performed under conditions of phenol concentration 800 mg L(-1), initial pH 6.5, current density 100 A m(-2) and sodium sulfate (Na(2)SO(4)) 3.0% (w/w) on IrO(2)-Ta(2)O(5)/Ti...
| Veröffentlicht in: | Water science and technology : a journal of the International Association on Water Pollution Research. - 1986. - 66(2012), 2 vom: 05., Seite 422-8 |
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| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2012
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| Zugriff auf das übergeordnete Werk: | Water science and technology : a journal of the International Association on Water Pollution Research |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't Water Pollutants, Chemical Phenol 339NCG44TV |
| Zusammenfassung: | A comparative study of phenol oxidation using pure electrolysis (PEs) and sand-based packed-bed electrode systems (SPBEs) was performed under conditions of phenol concentration 800 mg L(-1), initial pH 6.5, current density 100 A m(-2) and sodium sulfate (Na(2)SO(4)) 3.0% (w/w) on IrO(2)-Ta(2)O(5)/Ti anode. The results show quartz sand, a non-conducting material is incapable of expanding the electrode area and the phenol oxidation in SPBEs commences only at the electrode surface. From the theoretical description of the mass transport coefficient and chemical oxygen demand (COD), we confirm that the enhancement of the COD removal efficiency, current and space-time yields in SPBEs is due to the improvement of mass transport properties. The proposed SPBEs shows superiority to the PEs on saving energy at the same applied voltage, however, when operated under the same applied current density the energy consumption of the former would be much higher than that of the latter because of the rise of the applied cell voltage |
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| Beschreibung: | Date Completed 28.08.2012 Date Revised 21.11.2013 published: Print Citation Status MEDLINE |
| ISSN: | 0273-1223 |
| DOI: | 10.2166/wst.2012.165 |