HYDROGEN DISSOLUTION RATE IN HYDROGENOTROPHIC DENITRIF1CATION PROCESS EQUIPPED WITH SOLID-POLYMER-ELECTROLYTE MEMBRANE ELECTRODE

摘要

Hydrogen dissolution rates in Solid-Polymer-Electrolyte (SPE) membrane electrode were measured under different electric currents and packed material conditions. The packed material used in this study is a porous cube made of polyvinyl alcohol. Electric currents and volume of the packed material were set in the range of 1.0 to 4.0 A and 0.5, 1.0 L, respectively. In batch experiment, observed results showed that volumetric hydrogen transfer coefficients in liquid film (K_La) were represented by a linear function of hydrogen gas bubble production rates (GH2). By using our former mathematical model and the observed relation for K_La, hydrogen dissolution rates were calculated and compared with continuous experimental results, demonstrating that calculated results were in fairly good agreement with observed results.