醇类淋洗剂淋洗修复多环芳烃污染土壤
发布时间：2019-03-14 18:51
【摘要】：异位土壤淋洗技术是一种有效的污染土壤修复技术。以菲和苯并[a]芘为目标污染物,选取醇类作为淋洗剂,考察了醇种类及浓度、淋洗剂用量、淋洗时间、淋洗温度、淋洗次数对污染土壤(菲和苯并[a]芘质量浓度分别为82.5、4.3mg/kg)淋洗效果的影响。结果表明:修复的最佳条件为正丙醇体积分数40%、淋洗剂用量20mL、淋洗温度20℃、淋洗时间60min、重复淋洗2次,此时菲和苯并[a]芘的去除率分别达到93.05%、86.85%。
[Abstract]:Heterotopic soil leaching is an effective technique for remediation of contaminated soil. Taking phenanthrene and benzo [a] pyrene as target pollutants, alcohol was selected as eluent. The kinds and concentration of alcohol, the amount of eluent, the time of elution and the temperature of elution were investigated. Effects of leaching times on leaching efficiency of contaminated soil (phenanthrene and benzo [a] pyrene concentration were 82.5 mg / kg and 4.3 mg / kg, respectively). The results showed that the optimum conditions were as follows: the volume fraction of n-propanol was 40%, the amount of eluent was 20ml, the elution temperature was 20 鈩，
本文编号：2440263
[Abstract]:Heterotopic soil leaching is an effective technique for remediation of contaminated soil. Taking phenanthrene and benzo [a] pyrene as target pollutants, alcohol was selected as eluent. The kinds and concentration of alcohol, the amount of eluent, the time of elution and the temperature of elution were investigated. Effects of leaching times on leaching efficiency of contaminated soil (phenanthrene and benzo [a] pyrene concentration were 82.5 mg / kg and 4.3 mg / kg, respectively). The results showed that the optimum conditions were as follows: the volume fraction of n-propanol was 40%, the amount of eluent was 20ml, the elution temperature was 20 鈩，
本文编号：2440263
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