A multi-component statistic analysis for the influence of sediment/soil composition on the sorption of a nonionic surfactant (Triton X-100) onto natural sediments/soils

被引:77
作者
Zhu, LZ [1 ]
Yang, K [1 ]
Lou, BF [1 ]
Yuan, BH [1 ]
机构
[1] Zhejiang Univ, Dept Environm Sci, Hangzhou 310028, Peoples R China
基金
中国国家自然科学基金;
关键词
nonionic surfactant; sorption; soils/sediments; remediation;
D O I
10.1016/S0043-1354(03)00428-7
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The contents of soil/sediment organic carbon and clay minerals (i.e. montmorillonite, kaolinite, illite, gibbsite and 1.4 nm minerals) for 21 natural soil/sediment samples and the sorption of Triton X-100 on these samples were determined. A multi-component statistic analysis was employed to investigate the importance of soil/sediment organic matters and clay minerals on their sorption of Triton X-100. The sorption power of soil/sediment composition for Triton X-100 conforms to an order of montmorillonite > organic carbon > illite > 1.4 nm minerals (vermiculite + chlorite + 1.4 nm intergrade mineral) much greater than kaolinite. The sorption of Triton X-100 on a montmorillonite, a kaolinite and a humic acid were also investigated and consistent with the result of multi-component statistic analysis. It is clear that the sorption of Triton X-100 on soils or sediments is the combined contribution of soil/sediment organic matters and clay minerals, which depended on both the contents of soil/sediment organic matters and the types and contents of clay minerals. The important influence of illite on the sorption of nonionic surfactants onto soils/sediments is suggested and demonstrated in this paper. Surfactants for aquifer remediation application may be more efficient for the contaminated soils/sediments that contain little clay minerals with 2:1 structure because of the less sorption of nonionic surfactants on these soils/sediments. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4792 / 4800
页数:9
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