Adsorption of Cd by peanut husks and peanut husk biochar from aqueous solutions

Qiming Cheng; Qing Huang; Sardar Khan; Yingjie Liu; Zhenni Liao; Gang Li; Yong Sik Ok

doi:10.1016/j.ecoleng.2015.11.045

Adsorption of Cd by peanut husks and peanut husk biochar from aqueous solutions

Qiming Cheng, Qing Huang, Sardar Khan, Yingjie Liu, Zhenni Liao, Gang Li, Yong Sik Ok

Research output: Contribution to journal › Article › peer-review

91 Citations (Scopus)

Abstract

This study was conducted to investigate the best absorbent for cadmium (Cd) present in aqueous solutions. Among the selected absorbents (n=22), peanut husk biochar (PHB) was the best absorbent for Cd and its adsorption reached to equilibrium within 12h. In this study, the optimum conditions observed for Cd adsorption were pH 5.0, an initial Cd concentration of 200mgL^-1, a PHB dosage of 40gL^-1, and room temperature. The Cd removal efficiency of the tested biochar reached to 99.9% at these optimum conditions. EDX analysis confirmed that Cd was adsorbed onto PHB more than onto PHs. It is concluded that PHB can be used as a good remediating material for removal of Cd from contaminated environmental matrixes.

Original language	English
Pages (from-to)	240-245
Number of pages	6
Journal	Ecological Engineering
Volume	87
DOIs	https://doi.org/10.1016/j.ecoleng.2015.11.045
Publication status	Published - 2016 Feb 1
Externally published	Yes

Keywords

Adsorption
Aqueous media
Cadmium
Isothermal model
Peanut husk biochar

ASJC Scopus subject areas

Environmental Engineering
Nature and Landscape Conservation
Management, Monitoring, Policy and Law

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Cite this

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title = "Adsorption of Cd by peanut husks and peanut husk biochar from aqueous solutions",

abstract = "This study was conducted to investigate the best absorbent for cadmium (Cd) present in aqueous solutions. Among the selected absorbents (n=22), peanut husk biochar (PHB) was the best absorbent for Cd and its adsorption reached to equilibrium within 12h. In this study, the optimum conditions observed for Cd adsorption were pH 5.0, an initial Cd concentration of 200mgL-1, a PHB dosage of 40gL-1, and room temperature. The Cd removal efficiency of the tested biochar reached to 99.9% at these optimum conditions. EDX analysis confirmed that Cd was adsorbed onto PHB more than onto PHs. It is concluded that PHB can be used as a good remediating material for removal of Cd from contaminated environmental matrixes.",

keywords = "Adsorption, Aqueous media, Cadmium, Isothermal model, Peanut husk biochar",

author = "Qiming Cheng and Qing Huang and Sardar Khan and Yingjie Liu and Zhenni Liao and Gang Li and Ok, {Yong Sik}",

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AU - Cheng, Qiming

AU - Huang, Qing

AU - Khan, Sardar

AU - Liu, Yingjie

AU - Liao, Zhenni

AU - Li, Gang

AU - Ok, Yong Sik

PY - 2016/2/1

Y1 - 2016/2/1

N2 - This study was conducted to investigate the best absorbent for cadmium (Cd) present in aqueous solutions. Among the selected absorbents (n=22), peanut husk biochar (PHB) was the best absorbent for Cd and its adsorption reached to equilibrium within 12h. In this study, the optimum conditions observed for Cd adsorption were pH 5.0, an initial Cd concentration of 200mgL-1, a PHB dosage of 40gL-1, and room temperature. The Cd removal efficiency of the tested biochar reached to 99.9% at these optimum conditions. EDX analysis confirmed that Cd was adsorbed onto PHB more than onto PHs. It is concluded that PHB can be used as a good remediating material for removal of Cd from contaminated environmental matrixes.

AB - This study was conducted to investigate the best absorbent for cadmium (Cd) present in aqueous solutions. Among the selected absorbents (n=22), peanut husk biochar (PHB) was the best absorbent for Cd and its adsorption reached to equilibrium within 12h. In this study, the optimum conditions observed for Cd adsorption were pH 5.0, an initial Cd concentration of 200mgL-1, a PHB dosage of 40gL-1, and room temperature. The Cd removal efficiency of the tested biochar reached to 99.9% at these optimum conditions. EDX analysis confirmed that Cd was adsorbed onto PHB more than onto PHs. It is concluded that PHB can be used as a good remediating material for removal of Cd from contaminated environmental matrixes.

KW - Adsorption

KW - Aqueous media

KW - Cadmium

KW - Isothermal model

KW - Peanut husk biochar

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