摘要
对有机溶剂脱附法处理高浓度石油污染土壤进行了研究。选用若干种溶剂对采油区典型的高浓度石油污染土壤进行脱附实验,考察了不同溶剂对石油污染土壤的脱油效果。结果表明复合溶剂TU-A是一种良好的脱附溶剂。通过考察该复合溶剂在温度、时间和溶剂用量条件下对脱油率的影响,得出在室温下,洗涤20 min后脱油率可以达到95%左右,洗涤2次后脱油率可以达到98%以上。
The research of organic solvent desorption of soils contaminated with heavy concentration of petroleum hydrocarbons is made. Several solvents are used in desorption experiments of the typical petroleum contaminated soils from oilfield.The desorption efficiency of different solvents are studied. Results showed that TU-A, a composite solvent of n-pentane and n-hexane（ 1：4 of volume ratio）, has the best capability among them. The effects of temperature, treating time and solvent volume on the removal rate of oil are studied with this TU-A solvent. Room temperature and 20 rain of treatment proves to be more efficient, and the oil removal rate can reach 95 % and exceed 98 % after twice washing.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2008年第8期60-61,63,共3页
Modern Chemical Industry
基金
国家“863”计划(2007AA061202)
天津市自然基金(06YFJMJC06800)共同资助
关键词
石油
土壤
重量法
脱附
petroleum
soil
weighing method
desorption
