Zinc adsorption on Na-rectorite and effect of static magnetic field on the adsorption
Zinc adsorption on Na-rectorite and effect of static magnetic field on the adsorption
复制标题
DOI：
10.1016/j.clay.2004.09.001
复制
发表时间：
2005-02
影响因子：
5.6
通讯作者：
Gaoke Zhang;Y. Liu;Yi-Kuan Xie;Xia Yang;Bo Hu;S. Ouyang;Hanxing Liu;Huiyan Wang
中科院分区：
文献类型：
--
作者：
Gaoke Zhang;Y. Liu;Yi-Kuan Xie;Xia Yang;Bo Hu;S. Ouyang;Hanxing Liu;Huiyan Wang
累托石是一种稀有粘土矿物。本文研究了Zn ~（2+）在钠基累托石上的吸附及静磁场对吸附的影响。结果表明：（1）Na型累托石对Zn ~（2+）的吸附在第一个小时内达到表观平衡，（2）Na型累托石对Zn ~（2+）的吸附量在pH 4 ~ 6之间达到最大值;（3）磁处理提高了无Zn ~（2+）存在时钠累托石分散体的zeta电位，降低了Zn ~（2+）存在时的zeta电位磁场处理促进了累托石对Zn ~（2+）的吸附，特别是在低Zn ~（2+）浓度时;静磁场作用降低了含锌和不含锌的累托石分散液的pH值。探讨了静磁场作用下Na型累托石对Zn ~（2+）的吸附机理。
Rectorite is a kind of rare clay minerals. In this work, the sorption of Zn2+on Na-rectorite and the effects of static magnetic field on the sorption have been studied. The result from this study indicated that: (1) apparent equilibrium for the sorption of zinc onto Na-rectorite is attained within the first hour; (2) the maximum of the increment of Zn2+adsorbed by Na-rectorite is obtained between pH 4 and pH 6; (3) magnetic treatment enhances the zeta potential of Na-rectorite dispersions in the absence of Zn2+and reduces that of the dispersions in the presence of Zn2+; (4) magnetic treatment promotes the sorption of Zn2+onto Na-rectorite, especially at the low Zn2+concentration; (5) the effects of static magnetic field decrease the pH of Na-rectorite dispersions whether containing zinc or not. The mechanisms of static magnetic field on the sorption of Zn2+on Na-rectorite were discussed.