Adsorption of fluoride from water solution on bone char

被引：206

作者：

Medellin-Castillo, Nahum A. ^{[1
]}

Leyva-Ramos, Roberto ^{[1
,2
]}

Ocampo-Perez, Raul ^{[1
]}

de la Cruz, Ramon F. Garcia ^{[1
]}

Aragon-Pina, Antonio ^{[1
]}

Martinez-Rosales, Jose M. ^{[3
]}

Guerrero-Coronado, Rosa M. ^{[1
]}

Fuentes-Rubio, Laura ^{[1
]}

机构：

[1] Inst Potosino Invest Cientif & Tecnol, DMASC, Mexico City 78216, DF, Mexico

[2] Univ Autonoma San Luis Potosi, Ctr Invest & Estud Posgrad, Fac Ciencias Quim, Mexico City 78260, DF, Mexico

[3] Univ Guanajuato, Ctr Invest Quim Inorgan, Guanajuato 36050, Mexico

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2007年 / 46卷 / 26期

关键词：

D O I：

10.1021/ie070023n

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effects of solution pH and temperature on the adsorption of fluoride onto bone char made from cattle bones were investigated in this work. It was found that the maximum adsorption took place at pH 3 and the adsorption capacity decreased nearly 20 times augmenting the pH from 3 to 12. This behavior was attributed to the electrostatic interactions between the surface of bone char and the fluoride ions in solution. The adsorption capacity was not influenced by temperature in the range from 15 to 35 degrees C. A comparison of fluoride adsorption capacities among several adsorbents revealed that the adsorption capacity of the bone char was 2.8 and 36 times greater than those of a commercial activated alumina (F-1) and a commercial activated carbon (F-400). The adsorption capacity is considerably dependent upon the physicochemical properties of the bone char surface and the solution pH.

引用

页码：9205 / 9212

页数：8

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