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| 溶解性石油烃在砂上的吸附和解吸研究 | |
| 引用本文： | 夏文香,李金成,郑西来,谷嵩,孙好芬.溶解性石油烃在砂上的吸附和解吸研究[J].中国海洋大学学报(自然科学版),2005,35(5):881-884. |
| 作者姓名： | 夏文香 李金成 郑西来 谷嵩 孙好芬 |
| 作者单位： | 1. 中国海洋大学环境工程系,山东,青岛,266003;青岛理工大学环境工程系,山东,青岛,266033 2. 青岛理工大学环境工程系,山东,青岛,266033 3. 中国海洋大学环境工程系,山东,青岛,266003 4. 河北省环境监测中心站,河北,石家庄,050051 |
| 基金项目： | 国家自然科学基金项目（402721080）;高等学校博士点基金（20040423016）资助 |
| 摘 要： | 采用海滨浴场的沙为吸附剂,0号柴油为吸附质,研究了溶解性石油烃（DPHs）在砂上的吸附及解吸规律.研究发现,砂对DPHs的吸附和解吸均符合一级反应模式;油的解吸速率比吸附速率慢13倍,并且有约25%的油残存于砂上, 因而污染威胁会在较长时间内存在.砂对海水中DPHs的吸附等温线可以用Henry型等温式描述,温度越高,海水中的油向砂上转移的量越小.通过吸附热力学分析,得出该吸附属于物理吸附范畴. |
| 关 键 词： | 石油污染 动力学 等温线 热力学 |
| 文章编号： | 1672-5174(2005)05-881-04 |
| 收稿时间： | 2005-02-22 |
| 修稿时间： | 2005-06-20 |
Absorption and Desorption of Dissolved Petroleum Hydrocarbons Using Sands as Absorbent Material |
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| XIA Wen-Xiang,LI Jin-Cheng,ZHENG Xi-Lai,GU Song,SUN Hao-Fen.Absorption and Desorption of Dissolved Petroleum Hydrocarbons Using Sands as Absorbent Material[J].Periodical of Ocean University of China,2005,35(5):881-884. | |
| Authors: | XIA Wen-Xiang LI Jin-Cheng ZHENG Xi-Lai GU Song SUN Hao-Fen |
| Institution: | 1. Department of Environmental Engineering, Ocean University of China, Qingdao 266003, China; 2. Department of Environmental Engineering, Qingdao Technological University, Qingdao 266033, China; 3. Hebei Provincial Environmental Monitoring Center, Shijiazhuang 050051, China |
| Abstract: | The absorption and desorption of dissolved petroleum hydrocarbons (DPHs) in seawater are studied using sands from a bathing beach as absorbent material and 0# diesel as absorbate. The results show the absorption and desorptionof DPHs on sands fits the first-order reaction model. The rate of desorption is slower than that of absorption up to 13 times, and about 25% oil becomes residues in the sands. Thus an environmental threat may have been in existence for a long time. The absorqtion isotherms can be described as Henry's equation, and the transportation amount of DPHs from seawater to sands decreases with the increase of temperature. The absorption is of to physical absorption according to the thermodynamic analysis. |
| Keywords: | petroleum contamination kinetics isotherm thermodynamics |
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