CAJ | 학술논문

为考察电芬顿降解罗丹明B的机制，对初始pH值、温度、亚铁浓度的反应动力学进行研究。为测定最佳条件下过氧化氢的含量、羟基自由基的相对含量及罗丹明B随时间的降解产物，开展UV-vis及GC-MS研究。经GC-MS分析，检测出了12种物质，分别为已二酸、丙二酸、丁二酸、领苯二甲酸酐、苯甲氧基胺、乙二醇、2-羟基苯甲酸、苯甲酸、2-羟基戊二酸、邻苯二甲酸、间苯二甲酸、对苯二甲酸，分别提出了可能的降解机制。在最佳条件下，50 min后溶液中的过氧化氢含量为6 mmol/L，过氧化氢与羟基自由基的相对含量变化趋势相同。
위고찰전분돈강해라단명B적궤제，대초시pH치、온도、아철농도적반응동역학진행연구。위측정최가조건하과양화경적함량、간기자유기적상대함량급라단명B수시간적강해산물，개전UV-vis급GC-MS연구。경GC-MS분석，검측출료12충물질，분별위이이산、병이산、정이산、령분이갑산항、분갑양기알、을이순、2-간기분갑산、분갑산、2-간기무이산、린분이갑산、간분이갑산、대분이갑산，분별제출료가능적강해궤제。재최가조건하，50 min후용액중적과양화경함량위6 mmol/L，과양화경여간기자유기적상대함량변화추세상동。
In order to study the degradation mechanism of rhodamine B by electro-fenton,reaction kinetics was studied in different initial pH value,temperature,concentration of Fe2+. Overall,the degradation followed the first-order reaction. In order to investigate the degradation mechanism of rhodamine B,the GC-MS and UV-vis technologies were applied. The amount of hydrogen peroxide and the relative amount of hydroxyl radicals were determined to get a better understanding of it. From GC-MS analysis,12 kinds of degradation products were detected. They were diacid,malonic acid,succinic acid,led the dimethyl anhydride,methoxy benzene amine,ethylene glycol,2-hydroxy benzoic acid,benzoic acid,2-hydroxy glutaric acid,phthalic acid,isophthalic acid,terephthalic acid. On this basis,possible degradation mechanism was proposed.Under optimal conditions,after 50 min,the hydrogen peroxide content was 6 mmol/L,the relative amounts of hydrogen peroxide and hydroxyl radicals had the same trends.