土壤对可溶性油的吸附作用及其影响因素分析

郑西来; 李永乐; 林国庆; 马玉新; 夏文香

土壤对可溶性油的吸附作用及其影响因素分析

1.
中国海洋大学环境科学与工程学院, 山东青岛 266003
2.
华北水利水电学院岩土工程系, 河南郑州 450008

基金项目:

国家自然科学基金项目 4027208

详细信息

作者简介:
郑西来(1959-), 男, 教授, 博士生导师, 1997年毕业于长安大学, 获博士学位, 现主要从事地下水资源可持续利用与污染控制的教学与研究工作.E-mail: zhxilai@ouc.edu.cn

中图分类号: P641.3
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出版历程
- 收稿日期: 2003-05-08
- 刊出日期: 2003-09-25

Adsorption of Aqueous Oil on Soils and Its Analysis of Effective Factors

1.
Institute of Environmental Science and Engineering, Ocean University of China, Qingdao 266003, China
2.
Department of Geotechnical Engineering, North China Institute of Hydroelectric Power, Zhengzhou 450008, China

摘要

摘要: 在沈(阳) 抚(顺) 灌区土-水-作物系统石油污染调查的基础上, 根据土壤非饱和带的结构和组成, 选择代表性的土壤剖面分别采集表土和底土, 分析土样的主要物理和化学性质, 系统测定不同土样对可溶性油吸附的动力学曲线和吸附等温线, 并分析了有机质、粘粒含量和含盐量对吸附作用的影响.结果表明, 土壤对可溶性油的吸附平衡时间为20~24h, 而且不同土样的吸附等温线均为直线型理想吸附.另外, 通过试验发现, 当水相中可溶性油低于一定浓度时, 不但不产生吸附, 反而使土壤中的残留油分释放出来.
- 土壤 /
- 可溶性油 /
- 吸附作用
Abstract: On the basis of the investigation into the oil contamination of soil-water-plant systems in the Shenyang-Fushun irrigation field, surface soils and bottom soils were sampled along 3 representative profiles and their major physical and chemical properties were analyzed. Kinetic curves and isotherms of aqueous oil adsorption on soils were measured and influence of organic matter, clay particle and salt contents on the adsorption was evaluated. The research results show that the equilibrium period of the adsorption is 20-24 hours, and all the adsorption isotherms are straight. In addition, it was found that the soils release some oil when the aqueous oil concentrations are lower than certain values.
- soil /
- aqueous oil /
- adsorption

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图 1 可溶性油吸附的动力学曲线

Fig. 1. Dynamic curves of aqueous oil adsorption

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图 2 不同土样对可溶性油的吸附等温线

Fig. 2. Adsorptive isotherms of aqueous oil on soils

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图 3 可溶性油的吸附量与土壤有机质含量(a)、粘粒含量(b) 和含盐量(c) 的关系

Fig. 3. Relations between adsorbed aqueous oil via organic matter (a), clay particle in soils (b) and salt contents (c)

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表 1 土样的机械组成和主要特征

Table 1. Mechanical composition and major characteristics of soil samples

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