PRELIMINARY STUDY OF SURFACE TREATMENTS FOR PLATINUM ELECTRODES DESIGNED FOR OXIDATION-REDUCTION POTENTIAL DETERMINATIONS IN ACTIVATED SLUDGE

Alain Heduit (1) , Bénédicte Martin (1) , Daniel R. Thevenot (2)

1 UR QEAN - Qualité des eaux
2 CEREVE - Centre d'Enseignement et de Recherche Eau Ville Environnement

Platinum electrodes with six different surface treatments (polishing, platinization, polypyrrole, polyurethane, cellulose acetate and Nafion) were tested for equilibrium exchange current densities and zero-current potential in treated water and activated sludge. Preliminary results show that platinization and polypyrrole treatment increase electron transfer rates, but polypyrrole film bre;iks up rapidly in activated sludge; polyurethane and cellulose acetate layers did not prevent fouling (and impaired performance) in activated sludge, but Nafion seemed more promising.

Domaines: Chimie; Chimie analytique; Sciences de l'environnement; Ingénierie de l'environnement

Alain Heduit, Bénédicte Martin, Daniel R. Thevenot. PRELIMINARY STUDY OF SURFACE TREATMENTS FOR PLATINUM ELECTRODES DESIGNED FOR OXIDATION-REDUCTION POTENTIAL DETERMINATIONS IN ACTIVATED SLUDGE. Water Science and Technology, 1994, 30 (4), pp.239 - 242. ⟨hal-01179751⟩