촉매 습식산화에 의한 반응성 염료 분해(2)

Decomposition of Reactive Dyes by Catalytic Wet Air Oxidation Process(2)

산업 현장에서 많이 사용되고 있는 반응성 염료인 remazol $black_5$를 연구 대상물로 선택하여 촉매습식 산화공법으로 처리하였다. 이때 반응성 염료성분의 분해효율, 촉매 첨가량 및 반응온도와 상호 관련하여 검토한 결과를 정리하였다. 이산화티탄 담체에 백금을 5.0wt% 담지한 촉매 1.5g/L, 6기압, $200^{\circ}C$ 이상에서 remazol $black_5$는 약 95% 이상 분해되었다. 반응온도 $250^{\circ}C$에서 240분 촉매산화를 하였을 때 uv 흡광 잔존율은 4%이고 반응온도가 $250^{\circ}C$, 120분 경과 후 색도 제거율은 약 95% 이상이었다.

For the application of wet air oxidation(WAO) process reactive dyes, remazol blacks has been selected as the subject for this study. The rate of decomposition relating to the reaction temperature and catalyst has been summarized during the catalytic wet air oxidation reaction. When 1.5 gram per liter of platinum is added titanium-dioxide and the partial pressure is adjusted to 6 atmosphere at the reaction temperature exceeding $200^{\circ}C$, more than 95% of the remazol blacks dyes were decomposed. When the reaction temperature was raised to $200^{\circ}C$, $220^{\circ}C$ and $250^{\circ}C$, respectively, for 240 minutes after adding the catalyst, the remaining rate of ultraviolet absorbance had dropped significantly to 18%, 12%, and 4%. At the reaction temperature of $250^{\circ}C$, color removal efficiency was approximately 95% or more after 120 minutes from the beginning of the reaction.