| Autor: |
Brahim Idbelkas, Driss Takky |
| Rok vydání: |
2001 |
| Předmět: |
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| Zdroj: |
Annales de Chimie Science des Matériaux. 26:33-44 |
| ISSN: |
0151-9107 |
| DOI: |
10.1016/s0151-9107(01)80044-1 |
| Popis: |
Electrochemical treatment of waste water containing phenol: a comparative study on lead dioxide and platinum electrodes. The objective of this work was to study the efficiency of the Pb/PbO2 electrode for decomposing the molecule of phenol, then to compare it to a platinum model electrode. Preliminary investigations by cyclic voltammetry showed that the Pb/PbO2 anode presents a good chemical and electrochemical stability and possesses a high oxygen overvoltage. The study also showed that the electrochemical oxidation of phenol on Pt and PbO2 in acidic media is a complex process. Long-time electrolysis was carried out using a three potential-plateau program with different values of the oxidation potentials and different concentrations of phenol. The obtained results showed that the transformation of phenol is total on the Pb/PbO2 anode and that it is partial on Pt. On the other hand an increase in the phenol concentration decreases the rate of its conversion on the electrodes. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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