Removal of cadmium ions from wastewater using innovative electronic waste-derived material

Meng Xu; Pejman Hadi; Guohua Chen; Gordon McKay

doi:10.1016/j.jhazmat.2014.03.037

Removal of cadmium ions from wastewater using innovative electronic waste-derived material

Meng Xu, Pejman Hadi, Guohua Chen, Gordon McKay^*

^*Corresponding author for this work

Hong Kong University of Science and Technology

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

160 Citations (Scopus)

Abstract

Cadmium is a highly toxic heavy metal even at a trace level. In this study, a novel material derived from waste PCBs has been applied as an adsorbent to remove cadmium ions from aqueous solutions. The effects of various factors including contact time, initial cadmium ion concentration, pH and adsorbent dosage have been evaluated. The maximum uptake capacity of the newly derived material for cadmium ions has reached 2.1. mmol/g at an initial pH 4. This value shows that this material can effectively remove cadmium ions from effluent. The equilibrium isotherm has been analyzed using several isotherm equations and is best described by the Redlich-Peterson model. Furthermore, different commercial adsorbent resins have been studied for comparison purposes. The results further confirm that this activated material is highly competitive with its commercial counterparts.

Original language	English
Pages (from-to)	118-123
Number of pages	6
Journal	Journal of Hazardous Materials
Volume	273
DOIs	https://doi.org/10.1016/j.jhazmat.2014.03.037
Publication status	Published - 30 May 2014
Externally published	Yes

Keywords

Adsorption isotherms
Cadmium removal
Ion exchange
Waste printed circuit boards

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10.1016/j.jhazmat.2014.03.037

Cite this

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title = "Removal of cadmium ions from wastewater using innovative electronic waste-derived material",

abstract = "Cadmium is a highly toxic heavy metal even at a trace level. In this study, a novel material derived from waste PCBs has been applied as an adsorbent to remove cadmium ions from aqueous solutions. The effects of various factors including contact time, initial cadmium ion concentration, pH and adsorbent dosage have been evaluated. The maximum uptake capacity of the newly derived material for cadmium ions has reached 2.1. mmol/g at an initial pH 4. This value shows that this material can effectively remove cadmium ions from effluent. The equilibrium isotherm has been analyzed using several isotherm equations and is best described by the Redlich-Peterson model. Furthermore, different commercial adsorbent resins have been studied for comparison purposes. The results further confirm that this activated material is highly competitive with its commercial counterparts.",

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T1 - Removal of cadmium ions from wastewater using innovative electronic waste-derived material

AU - Xu, Meng

AU - Hadi, Pejman

AU - Chen, Guohua

AU - McKay, Gordon

PY - 2014/5/30

Y1 - 2014/5/30

N2 - Cadmium is a highly toxic heavy metal even at a trace level. In this study, a novel material derived from waste PCBs has been applied as an adsorbent to remove cadmium ions from aqueous solutions. The effects of various factors including contact time, initial cadmium ion concentration, pH and adsorbent dosage have been evaluated. The maximum uptake capacity of the newly derived material for cadmium ions has reached 2.1. mmol/g at an initial pH 4. This value shows that this material can effectively remove cadmium ions from effluent. The equilibrium isotherm has been analyzed using several isotherm equations and is best described by the Redlich-Peterson model. Furthermore, different commercial adsorbent resins have been studied for comparison purposes. The results further confirm that this activated material is highly competitive with its commercial counterparts.

AB - Cadmium is a highly toxic heavy metal even at a trace level. In this study, a novel material derived from waste PCBs has been applied as an adsorbent to remove cadmium ions from aqueous solutions. The effects of various factors including contact time, initial cadmium ion concentration, pH and adsorbent dosage have been evaluated. The maximum uptake capacity of the newly derived material for cadmium ions has reached 2.1. mmol/g at an initial pH 4. This value shows that this material can effectively remove cadmium ions from effluent. The equilibrium isotherm has been analyzed using several isotherm equations and is best described by the Redlich-Peterson model. Furthermore, different commercial adsorbent resins have been studied for comparison purposes. The results further confirm that this activated material is highly competitive with its commercial counterparts.

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KW - Ion exchange

KW - Waste printed circuit boards

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Removal of cadmium ions from wastewater using innovative electronic waste-derived material

Abstract

Keywords

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