Asian Pacific Confederation of Chemical Engineering congress program and abstracts
Asian Pacific Confederation of Chemical Engineers congress program and abstracts
Session ID : 1J-08
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Removal Behavior of Protein Adsorbed on Metal Surface by H2O2-Electrolysis Treatment
Koreyoshi ImamuraIppei WatanabeYumi AramotoTakaharu SakiyamaKazuhiro Nakanishi
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A novel method for generating hydroxyl radicals, ·OH, was developed, by applying slightly negative electric potentials (-0.2 ∼ -0.8 V vs Ag/AgCl) to the surface of a metal in contact with a hydrogen peroxide solution containing a supporting electrolyte. Namely, ·OH radicals are generated at the surface by the electrolysis of hydrogen peroxide according to the equation, H2O2 + e- -> ·OH + OH-. In this study, the kinetics of the removal of a model proteinaceous soiling (ß-lactoglobulin, ß-Lg) adsorbed to a stainless steel surface by the H2O2-electrolysis treatment were investigated. The rate of removal of the adsorbed ß-Lg from the stainless steel surface during the treatment was monitored in situ by ellipsometry, and the dependencies of the removal rate on H2O2 concentration, the electric potential applied to the surface, and the concentration and type of supporting electrolyte were examined.

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© 2004 The Society of Chemical Engineers, Japan
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