Immobilization of lead and cadmium from aqueous solution and contaminated sediment using nano-hydroxyapatite

Zizhong Zhang; Mengyan Li; Wei Chen; Shuzhen Zhu; Nannan Liu; Lingyan Zhu

doi:10.1016/j.envpol.2009.08.024

Immobilization of lead and cadmium from aqueous solution and contaminated sediment using nano-hydroxyapatite

Zizhong Zhang, Mengyan Li, Wei Chen, Shuzhen Zhu, Nannan Liu, Lingyan Zhu

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

230 Scopus citations

Abstract

The effectiveness and mechanism of nano-hydroxyapatite particles (nHAp) in immobilizing Pb and Cd from aqueous solutions and contaminated sediment were investigated. The maximum sorption amount (Q_max) of Pb and Cd in aqueous solution was 1.17 and 0.57 mmol/g. The X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) surface and depth analysis indicated that dissolution-precipitation is the primary immobilization mechanism for Pb, while surface complexation and intraparticle diffusion account for Cd sequestration. Different amounts of nHAp (0-10% nHAp/dry weight) were added to the contaminated sediment. Sequential extraction showed that nHAp could effectively reduce the exchangeable fraction of Pb and Cd in the sediment and significantly reduce the concentration in porewater. The results in this study showed that nHAp can immobilize Pb and Cd in sediment effectively.

Original language	English (US)
Pages (from-to)	514-519
Number of pages	6
Journal	Environmental Pollution
Volume	158
Issue number	2
DOIs	https://doi.org/10.1016/j.envpol.2009.08.024
State	Published - Feb 2010
Externally published	Yes

All Science Journal Classification (ASJC) codes

Toxicology
Pollution
Health, Toxicology and Mutagenesis

Keywords

Cadmium
Immobilization
Lead
Nano-hydroxyapatite
Sediment

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10.1016/j.envpol.2009.08.024

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title = "Immobilization of lead and cadmium from aqueous solution and contaminated sediment using nano-hydroxyapatite",

abstract = "The effectiveness and mechanism of nano-hydroxyapatite particles (nHAp) in immobilizing Pb and Cd from aqueous solutions and contaminated sediment were investigated. The maximum sorption amount (Qmax) of Pb and Cd in aqueous solution was 1.17 and 0.57 mmol/g. The X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) surface and depth analysis indicated that dissolution-precipitation is the primary immobilization mechanism for Pb, while surface complexation and intraparticle diffusion account for Cd sequestration. Different amounts of nHAp (0-10% nHAp/dry weight) were added to the contaminated sediment. Sequential extraction showed that nHAp could effectively reduce the exchangeable fraction of Pb and Cd in the sediment and significantly reduce the concentration in porewater. The results in this study showed that nHAp can immobilize Pb and Cd in sediment effectively.",

keywords = "Cadmium, Immobilization, Lead, Nano-hydroxyapatite, Sediment",

author = "Zizhong Zhang and Mengyan Li and Wei Chen and Shuzhen Zhu and Nannan Liu and Lingyan Zhu",

note = "Funding Information: The authors gratefully acknowledge the financial support of Tianjin Municipal Science and Technology Commission (06TXTJJC14000, 07JCZDJC01900, 08ZCGHHZ01000), Ministry of Science and Technology (2008ZX08526-003) and New Century Talent program.",

year = "2010",

month = feb,

doi = "10.1016/j.envpol.2009.08.024",

language = "English (US)",

volume = "158",

pages = "514--519",

journal = "Environmental Pollution",

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TY - JOUR

T1 - Immobilization of lead and cadmium from aqueous solution and contaminated sediment using nano-hydroxyapatite

AU - Zhang, Zizhong

AU - Li, Mengyan

AU - Chen, Wei

AU - Zhu, Shuzhen

AU - Liu, Nannan

AU - Zhu, Lingyan

N1 - Funding Information: The authors gratefully acknowledge the financial support of Tianjin Municipal Science and Technology Commission (06TXTJJC14000, 07JCZDJC01900, 08ZCGHHZ01000), Ministry of Science and Technology (2008ZX08526-003) and New Century Talent program.

PY - 2010/2

Y1 - 2010/2

N2 - The effectiveness and mechanism of nano-hydroxyapatite particles (nHAp) in immobilizing Pb and Cd from aqueous solutions and contaminated sediment were investigated. The maximum sorption amount (Qmax) of Pb and Cd in aqueous solution was 1.17 and 0.57 mmol/g. The X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) surface and depth analysis indicated that dissolution-precipitation is the primary immobilization mechanism for Pb, while surface complexation and intraparticle diffusion account for Cd sequestration. Different amounts of nHAp (0-10% nHAp/dry weight) were added to the contaminated sediment. Sequential extraction showed that nHAp could effectively reduce the exchangeable fraction of Pb and Cd in the sediment and significantly reduce the concentration in porewater. The results in this study showed that nHAp can immobilize Pb and Cd in sediment effectively.

AB - The effectiveness and mechanism of nano-hydroxyapatite particles (nHAp) in immobilizing Pb and Cd from aqueous solutions and contaminated sediment were investigated. The maximum sorption amount (Qmax) of Pb and Cd in aqueous solution was 1.17 and 0.57 mmol/g. The X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) surface and depth analysis indicated that dissolution-precipitation is the primary immobilization mechanism for Pb, while surface complexation and intraparticle diffusion account for Cd sequestration. Different amounts of nHAp (0-10% nHAp/dry weight) were added to the contaminated sediment. Sequential extraction showed that nHAp could effectively reduce the exchangeable fraction of Pb and Cd in the sediment and significantly reduce the concentration in porewater. The results in this study showed that nHAp can immobilize Pb and Cd in sediment effectively.

KW - Cadmium

KW - Immobilization

KW - Lead

KW - Nano-hydroxyapatite

KW - Sediment

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JO - Environmental Pollution

JF - Environmental Pollution

IS - 2

ER -

Immobilization of lead and cadmium from aqueous solution and contaminated sediment using nano-hydroxyapatite

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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