CAJ | 학술논문

应用生物合成施氏矿物作为光助类芬顿反应催化剂促进甲基橙的降解.施氏矿物通过A. f-LX5细胞悬浮液在初始pH值2.5和28℃时氧化FeSO43d生成，并进行X射线衍射和扫描电子显微镜表征.本研究分析了不同初始pH、H2 O2浓度及催化剂装载量对在光助类芬顿反应中甲基橙氧化降解效率的影响.结果表明，生物合成施氏矿物具有较高的催化活性，并且通过羟基自由基机制使甲基橙降解.在近中性、较高Cl-、SO2-4及NO3-浓度条件下，施氏矿物仍然能保持较高催化甲基橙降解的效率.本研究验证了以生物合成施氏矿物作为催化剂的异相光助类芬顿反应是一种处理含甲基橙废水有应用前景的高级氧化技术.
응용생물합성시씨광물작위광조류분돈반응최화제촉진갑기등적강해.시씨광물통과A. f-LX5세포현부액재초시pH치2.5화28℃시양화FeSO43d생성，병진행X사선연사화소묘전자현미경표정.본연구분석료불동초시pH、H2 O2농도급최화제장재량대재광조류분돈반응중갑기등양화강해효솔적영향.결과표명，생물합성시씨광물구유교고적최화활성，병차통과간기자유기궤제사갑기등강해.재근중성、교고Cl-、SO2-4급NO3-농도조건하，시씨광물잉연능보지교고최화갑기등강해적효솔.본연구험증료이생물합성시씨광물작위최화제적이상광조류분돈반응시일충처리함갑기등폐수유응용전경적고급양화기술.
Biosynthesized schwertmannite was used as catalyst in photo-Fenton-like reaction to facilitate the degradation of methyl orange ( MO) . Schwertmannite was synthesized through the oxidation of FeSO4 by Acidithiobacillus ferrooxidans LX5 cell suspension at an initial pH 2. 5 and 28℃ for 3 days and characterized using X-ray diffraction spectroscopy and scanning electron microscope. The oxidative degradation of MO in the photo-Fenton-like reaction was studied at different initial pH values of suspension, concentrations of H2 O2 and dosages of catalyst. The results suggested that the biosynthetic schwertmannite showed a good catalytic activity in the MO degradation via ·OH radical mechanism. Considerable degradation efficiency of MO was still obtained in approximately neutral condition or in the presence of high concentrations of chloride, sulfate and nitrate. This work demonstrated that the heterogeneous photo-Fenton-like reaction catalyzed by the biosynthetic schwertmannite is a promising advanced oxidation technology for the treatment of wastewater containing MO.