Copper and zinc removal from aqueous solution by mixed mineral systems II: the role of solution composition and aging

D. E. Egirani; A. R. Baker; J. E. Andrews

doi:10.1016/j.jcis.2005.05.006

Copper and zinc removal from aqueous solution by mixed mineral systems II: the role of solution composition and aging

D. E. Egirani, A. R. Baker, J. E. Andrews

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

15 Citations (Scopus)

Abstract

This study investigates Cu and Zn removal onto binary mixed mineral sorbents from simulated wastewater, relevant to streams impacted by acid mine drainage and effluents. Mixed suspensions of kaolinite/montmorillonite and kaolinite/goethite exhibited different sorption behavior from the single mineral components, reducing Cu and Zn removal (except Cu sorbed on montmorillonite/goethite) over the range of pH investigated. Cu and Zn removal by the electrolyzed systems showed a complex response to increased ionic strength, which increased solid concentration, leading to lower Cu and Zn sorption. Enhanced Cu sorption on the montmorillonite/goethite as age increased may be attributed to increased hydroxylation of the mineral surface resulting in the formation of new reactive sites.

Original language	English
Pages (from-to)	326-333
Number of pages	8
Journal	Journal of Colloid and Interface Science
Volume	291
Issue number	2
Early online date	11 Jul 2005
DOIs	https://doi.org/10.1016/j.jcis.2005.05.006
Publication status	Published - 15 Nov 2005

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10.1016/j.jcis.2005.05.006

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title = "Copper and zinc removal from aqueous solution by mixed mineral systems II: the role of solution composition and aging",

abstract = "This study investigates Cu and Zn removal onto binary mixed mineral sorbents from simulated wastewater, relevant to streams impacted by acid mine drainage and effluents. Mixed suspensions of kaolinite/montmorillonite and kaolinite/goethite exhibited different sorption behavior from the single mineral components, reducing Cu and Zn removal (except Cu sorbed on montmorillonite/goethite) over the range of pH investigated. Cu and Zn removal by the electrolyzed systems showed a complex response to increased ionic strength, which increased solid concentration, leading to lower Cu and Zn sorption. Enhanced Cu sorption on the montmorillonite/goethite as age increased may be attributed to increased hydroxylation of the mineral surface resulting in the formation of new reactive sites.",

author = "Egirani, {D. E.} and Baker, {A. R.} and Andrews, {J. E.}",

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journal = "Journal of Colloid and Interface Science",

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T1 - Copper and zinc removal from aqueous solution by mixed mineral systems II: the role of solution composition and aging

AU - Egirani, D. E.

AU - Baker, A. R.

AU - Andrews, J. E.

PY - 2005/11/15

Y1 - 2005/11/15

N2 - This study investigates Cu and Zn removal onto binary mixed mineral sorbents from simulated wastewater, relevant to streams impacted by acid mine drainage and effluents. Mixed suspensions of kaolinite/montmorillonite and kaolinite/goethite exhibited different sorption behavior from the single mineral components, reducing Cu and Zn removal (except Cu sorbed on montmorillonite/goethite) over the range of pH investigated. Cu and Zn removal by the electrolyzed systems showed a complex response to increased ionic strength, which increased solid concentration, leading to lower Cu and Zn sorption. Enhanced Cu sorption on the montmorillonite/goethite as age increased may be attributed to increased hydroxylation of the mineral surface resulting in the formation of new reactive sites.

AB - This study investigates Cu and Zn removal onto binary mixed mineral sorbents from simulated wastewater, relevant to streams impacted by acid mine drainage and effluents. Mixed suspensions of kaolinite/montmorillonite and kaolinite/goethite exhibited different sorption behavior from the single mineral components, reducing Cu and Zn removal (except Cu sorbed on montmorillonite/goethite) over the range of pH investigated. Cu and Zn removal by the electrolyzed systems showed a complex response to increased ionic strength, which increased solid concentration, leading to lower Cu and Zn sorption. Enhanced Cu sorption on the montmorillonite/goethite as age increased may be attributed to increased hydroxylation of the mineral surface resulting in the formation of new reactive sites.

U2 - 10.1016/j.jcis.2005.05.006

DO - 10.1016/j.jcis.2005.05.006

M3 - Article

SN - 1095-7103

VL - 291

SP - 326

EP - 333

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

IS - 2

ER -