过硫酸盐在环境温度下对溶液和土壤悬浮液中邻苯二甲酸二甲酯的降解。
Degradation of dimethyl phthalate in solutions and soil slurries by persulfate at ambient temperature.
机构信息
School of Chemistry and Environment, South China Normal University, Guangzhou, Guangdong 510006, China.
School of Chemistry and Environment, South China Normal University, Guangzhou, Guangdong 510006, China.
出版信息
J Hazard Mater. 2014 Apr 30;271:202-9. doi: 10.1016/j.jhazmat.2014.02.027. Epub 2014 Feb 28.
The degradation of dimethyl phthalate (DMP) by persulfate at ambient temperature (T=20-40°C) was investigated in aqueous solutions and soil slurries to assess the feasibility of using persulfate to remediate DMP contaminated soil and groundwater. First, the effects of temperature, initial oxidant concentration, initial DMP concentration and initial solution pH on the removal of DMP and TOC were studied in aqueous solutions. The results show that persulfate at 40°C can effectively mineralize DMP. Furthermore, dimethyl 4-hydroxyl phthalate, maleic acid and oxalic acid were identified as the degradation intermediates, and degradation pathways were proposed. Lastly, persulfate at 40°C was applied to remediate soil spiked with DMP at ∼ 600 mg/kg. The results show that persulfate at 40°C is highly effective for the remediation of DMP contaminated soil. Overall, this study provides fundamental and practical knowledge for the treatment of emerging phthalate esters (PAEs) contaminated soil and groundwater, as well as PAEs contaminated industrial wastewater, with persulfate at ambient temperature.
在环境温度（T=20-40°C）下，研究了过硫酸盐对邻苯二甲酸二甲酯（DMP）的降解作用，以评估过硫酸盐修复 DMP 污染土壤和地下水的可行性。首先，在水溶液中研究了温度、初始氧化剂浓度、初始 DMP 浓度和初始溶液 pH 值对 DMP 和 TOC 去除的影响。结果表明，40°C 下的过硫酸盐可以有效地将 DMP 矿化。此外，鉴定出邻苯二甲酸二甲醇、马来酸和草酸为降解中间产物，并提出了降解途径。最后，将 40°C 下的过硫酸盐应用于修复 DMP 浓度约为 600mg/kg 的土壤。结果表明，40°C 下的过硫酸盐对 DMP 污染土壤的修复非常有效。总的来说，本研究为过硫酸盐在环境温度下处理新兴邻苯二甲酸酯（PAEs）污染土壤和地下水以及 PAEs 污染工业废水提供了基础和实用知识。
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