Trapping heavy metals by using calcium hydroxyapatite and dielectrophoresis

John Batton; Arun John Kadaksham; Ange Nzihou; Pushpendra Singh; Nadine Aubry

doi:10.1016/j.jhazmat.2006.02.057

Trapping heavy metals by using calcium hydroxyapatite and dielectrophoresis

John Batton, Arun John Kadaksham, Ange Nzihou, Pushpendra Singh, Nadine Aubry

Mechanical and Industrial Engr

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

30 Scopus citations

Abstract

We propose a novel technique for the removal of heavy metal waste from contaminated water. Our method consists in using dielectrophoresis (DEP) to trap hydroxyapatite (HAP) particles of 1 μm size in water after they have adsorbed heavy metal (Pb, Zn, Cu, Co and Cr). Although HAP can adsorb heavy metals in water and as such offers great promise as a waste-cleaning tool [1-3], one of the current challenges is the efficient removal of the HAP particles once they have adsorbed the heavy metals. We show in this paper that DEP can be used to concentrate such particles in certain regions, thus rendering the rest of the solution volume nearly free of contaminated particles. We present here both experimental and numerical results for suspensions at low concentrations.

Original language	English (US)
Pages (from-to)	461-466
Number of pages	6
Journal	Journal of Hazardous Materials
Volume	139
Issue number	3
DOIs	https://doi.org/10.1016/j.jhazmat.2006.02.057
State	Published - Jan 31 2007

All Science Journal Classification (ASJC) codes

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

Keywords

Calcium hydroxyapatite (HAP)
Dielectrophoresis (DEP)
MEMS
Microfluidics
Removal of heavy metals
Waste water filtration

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10.1016/j.jhazmat.2006.02.057

Cite this

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title = "Trapping heavy metals by using calcium hydroxyapatite and dielectrophoresis",

abstract = "We propose a novel technique for the removal of heavy metal waste from contaminated water. Our method consists in using dielectrophoresis (DEP) to trap hydroxyapatite (HAP) particles of 1 μm size in water after they have adsorbed heavy metal (Pb, Zn, Cu, Co and Cr). Although HAP can adsorb heavy metals in water and as such offers great promise as a waste-cleaning tool [1-3], one of the current challenges is the efficient removal of the HAP particles once they have adsorbed the heavy metals. We show in this paper that DEP can be used to concentrate such particles in certain regions, thus rendering the rest of the solution volume nearly free of contaminated particles. We present here both experimental and numerical results for suspensions at low concentrations.",

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T1 - Trapping heavy metals by using calcium hydroxyapatite and dielectrophoresis

AU - Batton, John

AU - Kadaksham, Arun John

AU - Nzihou, Ange

AU - Singh, Pushpendra

AU - Aubry, Nadine

PY - 2007/1/31

Y1 - 2007/1/31

N2 - We propose a novel technique for the removal of heavy metal waste from contaminated water. Our method consists in using dielectrophoresis (DEP) to trap hydroxyapatite (HAP) particles of 1 μm size in water after they have adsorbed heavy metal (Pb, Zn, Cu, Co and Cr). Although HAP can adsorb heavy metals in water and as such offers great promise as a waste-cleaning tool [1-3], one of the current challenges is the efficient removal of the HAP particles once they have adsorbed the heavy metals. We show in this paper that DEP can be used to concentrate such particles in certain regions, thus rendering the rest of the solution volume nearly free of contaminated particles. We present here both experimental and numerical results for suspensions at low concentrations.

AB - We propose a novel technique for the removal of heavy metal waste from contaminated water. Our method consists in using dielectrophoresis (DEP) to trap hydroxyapatite (HAP) particles of 1 μm size in water after they have adsorbed heavy metal (Pb, Zn, Cu, Co and Cr). Although HAP can adsorb heavy metals in water and as such offers great promise as a waste-cleaning tool [1-3], one of the current challenges is the efficient removal of the HAP particles once they have adsorbed the heavy metals. We show in this paper that DEP can be used to concentrate such particles in certain regions, thus rendering the rest of the solution volume nearly free of contaminated particles. We present here both experimental and numerical results for suspensions at low concentrations.

KW - Calcium hydroxyapatite (HAP)

KW - Dielectrophoresis (DEP)

KW - MEMS

KW - Microfluidics

KW - Removal of heavy metals

KW - Waste water filtration

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Trapping heavy metals by using calcium hydroxyapatite and dielectrophoresis

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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