亚临界萃取油污染土壤技术及实验研究  

Technology and experimental study of subcritical extract oil contaminated soil

作　　者：梁政[1] 郭全[1] 张梁[1] 邓雄[2] 秦勇 胡永昌 

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]西南石油大学石油与天然气工程学院,四川成都610500 [3]新疆准东石油技术股份有限公司,新疆克拉玛依834000

出　　处：《应用化工》2016年第11期2201-2203,共3页Applied Chemical Industry

基　　金：四川省教育厅项目(15ZB0061)

摘　　要：选择一种非极性溶剂作为油污染土壤萃取剂,将油污染土壤浸泡在亚临界态萃取剂中冲洗并静置一定时间,萃取完成后排出混合液并脱溶回收萃取剂;采用称重法测量处理后试样的除油率,并根据相关标准测定处理前后试样中的总石油烃含量。结果表明,该萃取剂对油污染土壤中的石油烃类物质和其他有机物有良好的去除效果。鉴于分离出的原油和使用过的萃取剂均能有效回收,证明使用该萃取剂亚临界萃取油污染土壤是一种经济有效的处理技术。A kind of non polar solvent was chosen as the oil contaminated soil extractant .The oil contami-nated soil samples with different groups were washed and soaked in the subcritical extractant for a certain time.After extraction,the mixed liquor was removed and the solvent was recovered .The oil removal rate was measured by weighing method ,and the content of TPH in the sample was determined according to the relevant standards .The results showed that the extractant had good effect on the removal of petroleum hy-drocarbons and other organic compounds in the soil .In view of the separation of the crude oil and the use of the extractant can be effectively recovered ,it is proved that using the extractant to subcritical extract oil contaminated soil is an economical and effective treatment technology .

关 键 词：油污染土壤 亚临界萃取 非极性溶剂 除油率 回收 

分 类 号：TQ016[化学工程]