활성 탄소 복합 전극을 이용한 Capacitive Deionization 공정의 제염 효과
Desalination Effects of Capacitive Deionization Process Using Activated Carbon Composite Electrodes
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초록
TiO2가 첨가된 탄소복합전극을 제조 Capacitive deionization(CDI)에서의 제염효과에 대하여 고 찰하였다. 본 연구에서는 탄소전극과 탄소복합전극을 제조하여 순환전류전압법과 충전-방전 평가를 하였으며 이때의 이온제거율에 대하여 고찰하였다. 순환전류전압법으로 1 mV/s의 전위주사속도에서 측정한 결과 탄소전극은 125 F/g, 탄소복합전극의 축전용량은 243 F/g으로 2배 증가됨을 확인하 였다. 탄소복합전극의 TiO2의 함량은 10 wt.%로 고정하였으며 TiO2가 첨가됨에 따라 전기이중층 흡착량이 증가되어 이온제거율이 탄소전극보다 25% 증가되었다.
Abstract
Desalination effects of Capacitive deionization(CDI) process using activated carbon TiO2 composite electrode. In this study, we made the activated carbon electrod and activated carbon TiO2 composite electrode, which analysed at cyclic voltammetry and charge-discharge. The results measured for discharge capacitance in cyclic voltammetry were 125 F/g in activated carbon electrode and capacitance of activatd carbon composite electrode was increased about two time, 243 F/g. The TiO2 content of activated carbon composite electrode was 10 wt.%. When it was added wtih TiO2, electric double layer adsorption content was increased, so it was increased 25% in ion removal ratio of activated carbon electrode.
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