铁（VI）/羟基自由基体系对邻苯二甲酸二甲酯（DMP）的氧化降解
Oxidative Degradation of Dimethyl Phthalate (DMP) by the Fe(VI)/HO Process.
作者信息
Xue Jinjuan, Zhu Zhengrong, Zong Yuqing, Huang Chengjuan, Wang Mingxin
机构信息
School of Environmental and Safety Engineering, Changzhou University, Changzhou 213164, P. R. China.
出版信息
ACS Omega. 2019 May 30;4(5):9467-9472. doi: 10.1021/acsomega.9b01012. eCollection 2019 May 31.
This study investigates the degradation of dimethyl phthalate (DMP) with hydrogen peroxide and ferrate (Fe(VI)) under various reaction conditions. The results showed that the optimum conditions for dimethyl phthalate removal from water were as follows: (a) pH 7.0 and (b) the original molar ratio of [Fe(VI)]/[HO]/[DMP] equal to 10:2:1. Under the optimum conditions, the degradation rate of DMP can reach 89.7% in 360 min. Furthermore, 2,5-dihydroxybenzaldehyde, isophthalic acid, 2-ethylhexanol, oxalic acid, 2,6-dihydroxybenzoic acid, 2,6-dihydroxybenzaldehyde, 2,5-dihydroxybenzoic acid, and monomethyl phthalate were identified as the degradation intermediates, and degradation pathways were proposed.
本研究考察了在各种反应条件下，过氧化氢和高铁酸盐（Fe(VI)）对邻苯二甲酸二甲酯（DMP）的降解情况。结果表明，从水中去除邻苯二甲酸二甲酯的最佳条件如下：（a）pH值为7.0；（b）[Fe(VI)]/[HO]/[DMP]的初始摩尔比等于10:2:1。在最佳条件下，360分钟内DMP的降解率可达89.7%。此外，还鉴定出了2,5-二羟基苯甲醛、间苯二甲酸、2-乙基己醇、草酸、2,6-二羟基苯甲酸、2,6-二羟基苯甲醛、2,5-二羟基苯甲酸和邻苯二甲酸单甲酯作为降解中间体，并提出了降解途径。
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