【摘 要】
：
The adsorption of two nonionic surfactants polyethylene glycol tert-octyiphenyl ether Triton X-100 (TX-100), polyoxyethylene lauryl ether(Brij35) and an anionic
【机 构】
：
Key Lab of Groundwater Resources and Environment
【基金项目】
：
Jinlin Province Environmental Protection Bureau of China;\"985 Engineering\" Innovation Project for Graduate Student of Jilin University of China
论文部分内容阅读
The adsorption of two nonionic surfactants polyethylene glycol tert-octyiphenyl ether Triton X-100 (TX-100), polyoxyethylene lauryl ether(Brij35) and an anionic surfactant sodium dodecyi benzene sulfonate(SDBS) by two soils(S, S) of different natures and their respective organic-matter-extracted samples(S, S) were investi- gated. These adsorption isotherms show different adsorption stages of different types of surfactants by soils. The data fitted Langmuir equation very well. The adsorption maximum capacity(Q) indicates that TX-100 and SDBS were in the sequence of S>S>S>S in adsorption, however, Brij35 was in the sequence of S>S>S>S in adsorption. And the adsorption amounts of the different surfactants by soils followed the order of TX-100>Brij35>SDBS. Meanwhile, the adsorption of the nonionic surfactants TX-100 and Brij35 decreased with the increase of their ethylene oxide(EO) numbers. The results indicate that both soil organic matter and mineral played important roles in the adsorption of surfactants, and the adsorption of the surfactants by soils was affected by the physicochemical properties and struc- tures of the soils and surfactants, especially the mineral type and content of soil.
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