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Adsorption of Bromate in Aqueous Solution by the Modified Activated Carbon


Affiliations
1 College of Life Science, Shaoxing University, Shaoxing, 312000, China
2 Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, China
 

The presence of bromate in drinking water has attracted much attention, because it is a carcinogen and mutagenic to humans. Activated carbon is an effective adsorbent material widely used in water treatment. In order to enhance the adsorption of bromate ion on activated carbon, the modified activated carbon was obtained from granular activated carbon by chemical activation using cationic surfactant as an activator. The adsorption characteristics of bromate ion on the modified activated carbon were investigated through adsorption experiments. The effects of temperature, pH in solution, contact time and initial bromate concentration on bromate adsorption by the modified activated carbon were investigated. The experimental data were analysed by the Langmuir and Freundlich models of adsorption. Kinetic adsorption data were analysed by the pseudo-first-order kinetic model and the pseudo-second-order model respectively. The thermodynamics parameters were also calculated.

Keywords

Adsorption, Bromate, Activated Carbon.
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  • Adsorption of Bromate in Aqueous Solution by the Modified Activated Carbon

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Authors

Muqing Qiu
College of Life Science, Shaoxing University, Shaoxing, 312000, China
Xiaojie Lou
College of Life Science, Shaoxing University, Shaoxing, 312000, China
Meng Tang
College of Life Science, Shaoxing University, Shaoxing, 312000, China
Jiangping Song
Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, China

Abstract


The presence of bromate in drinking water has attracted much attention, because it is a carcinogen and mutagenic to humans. Activated carbon is an effective adsorbent material widely used in water treatment. In order to enhance the adsorption of bromate ion on activated carbon, the modified activated carbon was obtained from granular activated carbon by chemical activation using cationic surfactant as an activator. The adsorption characteristics of bromate ion on the modified activated carbon were investigated through adsorption experiments. The effects of temperature, pH in solution, contact time and initial bromate concentration on bromate adsorption by the modified activated carbon were investigated. The experimental data were analysed by the Langmuir and Freundlich models of adsorption. Kinetic adsorption data were analysed by the pseudo-first-order kinetic model and the pseudo-second-order model respectively. The thermodynamics parameters were also calculated.

Keywords


Adsorption, Bromate, Activated Carbon.

References