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Adsorption of Methylene Blue by Activated Carbon from Capsicum Straw


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

Dyes are known to be toxic, carcinogenic and mutagenic. Their release into the environment can cause aesthetic pollution, and moreover, they are not degraded by conventional aerobic wastewater treatment due to their recalcitrance. Therefore, it is necessary to reduce dye concentration in the wastewater. Activated carbon was obtained from capsicum straw by chemical activation using KOH as an activator. Then it was used as an adsorbent for the removal of dye methylene blue. The adsorption of dye methylene blue by activated carbon was carried out in detail. Kinetic adsorption data were analysed by the pseudo-first-order kinetic model, the pseudo-second-order model and the intraparticle diffusion model. The experimental data were analysed by the Langmuir and Freundlich models of adsorption. The thermodynamics parameters were also calculated.

Keywords

Adsorption, Methylene Blue, Activated Carbon, Capsicum Straw.
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  • Adsorption of Methylene Blue by Activated Carbon from Capsicum Straw

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Authors

Muqing Qiu
College of Life Science, Shaoxing University, Shaoxing, 312000, China
Yannan Xuan
Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, China
Peichao Luo
Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, China
Zebin Wang
Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, China
Jianxin Shou
Department of Life Science, Shaoxing University Yuanpei College, Shaoxing, 312000, China

Abstract


Dyes are known to be toxic, carcinogenic and mutagenic. Their release into the environment can cause aesthetic pollution, and moreover, they are not degraded by conventional aerobic wastewater treatment due to their recalcitrance. Therefore, it is necessary to reduce dye concentration in the wastewater. Activated carbon was obtained from capsicum straw by chemical activation using KOH as an activator. Then it was used as an adsorbent for the removal of dye methylene blue. The adsorption of dye methylene blue by activated carbon was carried out in detail. Kinetic adsorption data were analysed by the pseudo-first-order kinetic model, the pseudo-second-order model and the intraparticle diffusion model. The experimental data were analysed by the Langmuir and Freundlich models of adsorption. The thermodynamics parameters were also calculated.

Keywords


Adsorption, Methylene Blue, Activated Carbon, Capsicum Straw.

References