Cotton Fiber/ZrO2, A New Material for Adsorption of Cr(VI) Ions in Water

被引：21

作者：

Muxel, Alfredo Alberto ^{[1
]}

Nobre Gimenez, Sonia Maria ^{[1
]}

de Souza Almeida, Flaveli Aparecida ^{[1
]}

da Silva Alfaya, Reni Ventura ^{[1
]}

da Silva Alfaya, Antonio Alberto ^{[1
]}

机构：

[1] Univ Estadual Londrina UEL, Dept Quim, BR-86051990 Londrina, PR, Brazil

来源：

CLEAN-SOIL AIR WATER | 2011年 / 39卷 / 03期

关键词：

Adsorption; Anion exchange; Chromium(VI); Cotton fiber; ZrO2; AQUEOUS-SOLUTION; TEMKIN ISOTHERM; SELECTIVE ADSORPTION; HEXAVALENT CHROMIUM; ZERO-VALENT; REMOVAL; CELLULOSE; VI; PARAMETERS; WASTES;

D O I：

10.1002/clen.201000165

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The natural cotton fiber was used to synthesize an anion exchange, containing ZrO2 film on its surface, NCFZC (natural cotton fiber/ZrO2 composite). This anion exchanger was produced by the reaction of the zirconium oxychloride and hydroxyl groups on surface of the natural cotton fiber. The material was used for Cr(VI) ions adsorption studies. Adsorption equilibrium time and optimum pH for Cr(VI) adsorption were found to be 6 h and 4.0, respectively. The Langmuir and Temkin isotherms were used to models adsorption equilibrium data. The adsorption capacity of NCFZC was found to be 1.33 mmol/g. Kinetic studies showed that the rate of adsorption of Cr(VI) on NCFZC obeyed a pseudo-second-order kinetic model.

引用

页码：289 / 295

页数：7

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