Seki Y, Yurdakoç K
Dokuz Eylül University, Faculty of Arts and Sciences, Department of Chemistry, 35160 Buca, Izmir, Turkey.
J Colloid Interface Sci. 2005 Jul 1;287(1):1-5. doi: 10.1016/j.jcis.2004.10.072.
Clays were compared with organoclays for the sorption of paraquat from aqueous solution. Sepiolite (S), bentonite (B), and illite (I) were used as clay samples. Organoclays were prepared by the modification of the clays with nonyl- and dodecylammonium chlorides, denoted as NS, DS, NB, DB, NI, and DI, respectively. Specific surface area and pore size distribution of the samples were determined by N2 adsorption-desorption at 77 K using the BET method. X-ray powder diffraction analysis of the samples was used to determine the effects of modifying agents on the layer structure of the clays. In the adsorption experiments, C(m) values increased from 0.038 mmol/g for DS to 0.223 mmol/g for NI. Kd0.3 values ranged from 0.177 for DS to 0.843 for NI. The adsorption data indicated that illite and NI are the most effective adsorbents among these clays and organoclay samples, respectively.
比较了粘土和有机粘土对水溶液中百草枯的吸附情况。海泡石（S）、膨润土（B）和伊利石（I）用作粘土样品。有机粘土通过用壬基氯化铵和十二烷基氯化铵对粘土进行改性制备，分别记为NS、DS、NB、DB、NI和DI。使用BET法通过在77K下进行N2吸附-脱附测定样品的比表面积和孔径分布。通过对样品进行X射线粉末衍射分析来确定改性剂对粘土层状结构的影响。在吸附实验中，C(m)值从DS的0.038 mmol/g增加到NI的0.223 mmol/g。Kd0.3值范围从DS的0.177到NI的0.843。吸附数据表明，伊利石和NI分别是这些粘土和有机粘土样品中最有效的吸附剂。
