• electrochemical denitrification and kinetics study using ti/iro2–tio2–ruo2 as the anode and cu/zn as the cathode

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    • تاریخ ارائه: 1392/01/01
    • تاریخ انتشار در تی پی بین: 1392/01/01
    • تعداد بازدید: 559
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this study investigated the performance of electrochemical denitrification using ti/iro2–tio2–ruo2 as the anode and cu/zn as the cathode in an undivided cell. the main product of nitrate reduction of cathode was ammonia and indirect oxidation of the chlorine/hypochlorite took place in anodic area. however, the anode also possessed capacity of direct oxidation. the results of single-factor assay revealed that the optimal current density and nacl dosage were 15 ma/cm2 and 0.5 g/l, respectively. the model of exponential decay 2 can be used to simulate the reaction kinetics of nitrate to nitrogen (r2 > 0.983) at any nacl dosage and current density. reaction kinetics of nitrate reduction in cathode can be represented by pseudo first-order kinetics after 100 rounds fitting iterations of levenberg–marquardt. moreover, it was found that the corrosion of cathode was neglectable in acid/neutral condition and zn was less active than cu for nitrate removal.

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