Study on Degradation and Decolouration of Polycyclic Aromatic Hydrocarbons Crystal Violet by Photo-Fenton Reagent
LI Hong1,LI Xiao-hong1,PENG De-jun3,ZHENG Huai-li2,3*
1. College of Resources and Environmental Science,Chongqing University，Chongqing 400044,China 2. Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment,Ministry of Education，Chongqing University,Chongqing 400045,China 3. College of Chemistry and Chemical Engineering,Chongqing University，Chongqing 400044,China
Abstract：The crystal violet is one of polycyclic aromatic hydrocarbons. In the present paper,the degradation of the crystal violet by photo-Fenton reagent was studied. Through numerous experiments,the influences of various parameters including the wavelength-absorbency curve of the crystal violet,the concentration-absorbency curve of the crystal violet,the initial pH of solution,the initial concentration of the crystal violet,different irradiation time,the dosage of FeSO4,the dosage of H2O2 and orthogonal experiments were researched intensively. Through numerous experiments，the optimum conditions for crystal violet degradation were given. The main optimum conditions for crystal violet degradation are as follows: The initial optimum pH of solution is 3-4;The optimum concentration of the crystal violet is below 0.080 0 g·L-1. The optimum dosage of H2O2 is 1Qth. The optimum dosage of FeSO4 ranges from one fiftieth to one hundredth of the dosage of H2O2. Under the optimal conditions,the sun light can promote this reaction apparently,the reaction time can greatly be shortened,and the dosage of oxidant and catalyst can be saved too.
李宏1,李晓红1,彭德军3,郑怀礼2,3*. 多环芳烃结晶紫的光助芬顿降解脱色研究[J]. 光谱学与光谱分析, 2007, 27(08): 1591-1595.
LI Hong1,LI Xiao-hong1,PENG De-jun3,ZHENG Huai-li2,3*. Study on Degradation and Decolouration of Polycyclic Aromatic Hydrocarbons Crystal Violet by Photo-Fenton Reagent. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(08): 1591-1595.
