| 改性土壤对模拟含油废水中油的吸附 |
| 摘要点击 1116 全文点击 1872 投稿时间：1999-06-03 |
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| 中文关键词 阳离子表面活性剂 改性土壤 吸附 油 分配 饱和吸附量 |
| 英文关键词 cationic surfactant,oil,modified soils,sorption,sorption capacity,partition. |
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| 中文摘要 |
| 研究季铵盐阳离子表面活性剂四甲基铵离子 ( TMA)和十六烷基三甲基铵离子 ( HDTMA)改性的土壤 (黑土、黄棕壤、红壤 )对水中油的吸附作用 .结果表明 :改性土壤和未改性土壤均可吸附水中的油 ,但改性土壤对水中油的吸附能力明显高于未改性土壤 .改性土壤吸附油能力的顺序依次为 :1 CEC- HDTMA黑土 >1 CEC-HDTMA黄棕壤 >1 CEC- HDTMA红壤 >1 CEC-TMA黑土 >1 CEC-TMA黄棕壤 >1 CEC- TMA红壤 .未改性土壤和 HDTMA改性土壤对油的吸附通过分配来进行 ,吸附等温线可由 Henry方程表示 ,得出 logKSOM为 2.69,logKHDTMA为 3.35;TMA改性土壤对油的吸附符合 Langmuir方程 ,其对油的饱和吸附量分别为 1150 mg/kg( TMA黑土 ) ,751 mg/kg( TMA黄棕壤 ) ,172 mg/kg( TMA红壤 ) |
| 英文摘要 |
| Two kinds of quaternary ammonium compounds(QAC),hexadecylrrinethylammonium(HDTMA)and tetramethylammonium(TMA),were used to treat three kinds of natural soils(black soil,yellow brown soil and red soil)and sorption of oil in water by these soils was studied.Both natural soils and modified soils can sorb oil from water,but modified soils have better effect.The sorption effect of modified soils is following:1CEC HDTMA black soil>1CEC-HDTMA yellow brown soil>1CEC-HDTMA red soil>1CEC-TMA black soil>1CEC-TMA yellow brown soil>1CEC-TMA red soil.Sorption of oil by natural soils and HDTMA modified soils is via partition,the sorption isotherms can be expressed by Henry equation,and logKSOM is 2 69,logKHDTMA 3 35.Sorption mechanisms of TMA soils are complex,but the sorption isotherms can be expressed by Langmuir equation,the saturation sorption capacities are 1150mg/kg(TMA black soil),751 mg/kg(TMA yellow brown soil),172mg/kg(TMA red soil)respectively. |
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