天津城市建设学院学报
天津城市建設學院學報
천진성시건설학원학보
JOURNAL OF TIANJIN INSTITUTE OF URBAN CONSTRUCTION
2014年
1期
32-35
,共4页
陈磊%李佳雨%张春瑾%李芃林%刘彬%郑云丹
陳磊%李佳雨%張春瑾%李芃林%劉彬%鄭雲丹
진뢰%리가우%장춘근%리봉림%류빈%정운단
二氧化钛%光催化%热催化%光热协同作用
二氧化鈦%光催化%熱催化%光熱協同作用
이양화태%광최화%열최화%광열협동작용
TiO2%photo catalytic%thermal catalytic%thermal-photo synergetic
从光催化过程与热催化过程结合形成高效光催化反应技术入手,初步探究在固液相光催化反应中温度对有机污染物降解效果的影响。通过系列试验及结果分析表明:以活性紫溶液为模拟有机污染物废水的光热催化降解试验中,当加热时在反应后期会出现去除率下降的现象,说明热催化过程对于降解有机物的反应速率存在一定影响,并有一定的贡献;溶液的酸碱性对反应的降解效果存在影响,且降解反应条件选择酸性环境更加适宜;光热耦合催化氧化试验组的反应时间明显缩短,且降解效果皆优于单一光催化反应和单一热催化反应,因此光热耦合降解反应中的光热催化并不是光催化与热催化的简单叠加,而是存在协同作用。
從光催化過程與熱催化過程結閤形成高效光催化反應技術入手,初步探究在固液相光催化反應中溫度對有機汙染物降解效果的影響。通過繫列試驗及結果分析錶明:以活性紫溶液為模擬有機汙染物廢水的光熱催化降解試驗中,噹加熱時在反應後期會齣現去除率下降的現象,說明熱催化過程對于降解有機物的反應速率存在一定影響,併有一定的貢獻;溶液的痠堿性對反應的降解效果存在影響,且降解反應條件選擇痠性環境更加適宜;光熱耦閤催化氧化試驗組的反應時間明顯縮短,且降解效果皆優于單一光催化反應和單一熱催化反應,因此光熱耦閤降解反應中的光熱催化併不是光催化與熱催化的簡單疊加,而是存在協同作用。
종광최화과정여열최화과정결합형성고효광최화반응기술입수,초보탐구재고액상광최화반응중온도대유궤오염물강해효과적영향。통과계렬시험급결과분석표명:이활성자용액위모의유궤오염물폐수적광열최화강해시험중,당가열시재반응후기회출현거제솔하강적현상,설명열최화과정대우강해유궤물적반응속솔존재일정영향,병유일정적공헌;용액적산감성대반응적강해효과존재영향,차강해반응조건선택산성배경경가괄의;광열우합최화양화시험조적반응시간명현축단,차강해효과개우우단일광최화반응화단일열최화반응,인차광열우합강해반응중적광열최화병불시광최화여열최화적간단첩가,이시존재협동작용。
Based on the effective photocatalytic technology which combined photocatalytic process with thermal catalytic process, this paper explored the degradation effect of the temperature in organic pollutants in the solid-liquid phase photo catalytic reaction. The result of experiments showed that, in the process of thermo-photo catalytic degradation experiments where the reactive purple reaction were used as a series of simulated waste water, the heating would make removal rate de-cline in the late reaction, which indicated that thermal catalytic process have a certain impact on the reaction rate of the or-ganic pollutants degradation; meanwhile, the acid and alkaline environment of reaction system affected experiments results, and the acidic environment was good at the reaction; the experimental group of thermal coupling catalytic oxidation signifi-cantly shorten the reaction time, and the effects are better than single photo catalytic degradation or single thermal catalytic reaction, therefore, the coupled thermal catalysis in the degradation reaction was not the simple sum of photo and thermal catalytic, but were synergetic.