Fenton oxidation of 2,4- and 2,6-dinitrotoluene and acetone inhibition  

作　　者：Yiliang HE Bin ZHAO Joseph B.HUGHES Sung Soo HAN 

机构地区：[1]School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [2]School of Civil and Environmental Engineering,Georgia Institute of Technology,Atlanta,GA 30332,USA

出　　处：《Frontiers of Environmental Science & Engineering》2008年第3期326-332,共7页环境科学与工程前沿（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.20676078).

摘　　要：The performances and kinetic parameters of Fenton oxidation of 2,4-and 2,6-dinitrotoluene(DNT)in water-acetone mixtures and explosive contaminated soil washing-out solutions were investigated at a laboratory scale.The experimental results show that acetone can be a significant hydroxyl radical scavenger and result in serious inhibition of Fenton oxidation of 2,4-and 2,6-DNT.Although no serious inhibition was found in contaminated soil washing-out solutions,longer reaction time was needed to remove 2,4-and 2,6-DNT completely,mainly due to the competition of hydroxyl radicals.Fenton oxidation of 2,4-and 2,6-DNT fit well with the first-order kinetics and the presence of acetone also reduced DNT’s degradation kinetics.Based on the comparison and matching of retention time and ultraviolet(UV)spectra between high performance liquid chromatography(HPLC)and standards,the following reaction pathway for 2,4-DNT primary degradation was proposed:2,4-DNT→2,4-dinitro-benzaldehyde→2,4-dinitrobenzoic acid→1,3-dinitrobenzene→3-nitrophenol.

关 键 词：dinitrotoluenes Fenton oxidation acetone inhibition degradation kinetic reaction pathway 

分 类 号：O62[理学—有机化学]