Reactions of Cu2+ and Pb2+ with Mg/Al layered double hydroxide

Man Park; Choong Lyeal Choi; Young Jin Seo; Sang Kak Yeo; Jung Choi; Sridhar Komarneni; Jong Hee Lee

doi:10.1016/j.clay.2006.12.006

Reactions of Cu²⁺ and Pb²⁺ with Mg/Al layered double hydroxide

Man Park, Choong Lyeal Choi, Young Jin Seo, Sang Kak Yeo, Jung Choi, Sridhar Komarneni, Jong Hee Lee

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

125 Scopus citations

Abstract

The adsorption mechanisms of metal cations on the surfaces of clay minerals and other minerals are important for understanding their fate in contaminated soils and in waste water treatment. The reactions of Cu²⁺ and Pb²⁺ heavy metal cations with layered double hydroxide (LDH), has been investigated in aqueous solutions to elucidate their removal behaviors by LDH. The reaction of aqueous CuCl₂ solution with Mg/Al-LDH resulted in precipitation of Cu hydroxide chloride (Cu₇Cl₄(OH)₁₀·H₂O) along with slight decomposition of Mg/AI-LDH. On the other hand, the reaction of aqueous PbCl₂ solution led to steady decomposition of Mg/Al-LDH structure along with the formation of various Pb precipitates such as carbonate chloride (PbCO₃PbCl₂) and hydroxide chloride (Pb(OH)Cl). Experimental techniques such as X-ray diffraction, X-ray photoelectron spectroscopy and cation removal isotherms were used to decipher the mechanism of uptake. This study indicates that LDH removes Cu²⁺ and Pb²⁺ transition metal cations from aqueous solution mainly by surface adsorption and precipitation.

Original language	English (US)
Pages (from-to)	143-148
Number of pages	6
Journal	Applied Clay Science
Volume	37
Issue number	1-2
DOIs	https://doi.org/10.1016/j.clay.2006.12.006
State	Published - Jun 2007

All Science Journal Classification (ASJC) codes

Geology
Geochemistry and Petrology

Access to Document

10.1016/j.clay.2006.12.006

Cite this

@article{2b4252747a1449b59a47ecffde078056,

title = "Reactions of Cu2+ and Pb2+ with Mg/Al layered double hydroxide",

abstract = "The adsorption mechanisms of metal cations on the surfaces of clay minerals and other minerals are important for understanding their fate in contaminated soils and in waste water treatment. The reactions of Cu2+ and Pb2+ heavy metal cations with layered double hydroxide (LDH), has been investigated in aqueous solutions to elucidate their removal behaviors by LDH. The reaction of aqueous CuCl2 solution with Mg/Al-LDH resulted in precipitation of Cu hydroxide chloride (Cu7Cl4(OH)10·H2O) along with slight decomposition of Mg/AI-LDH. On the other hand, the reaction of aqueous PbCl2 solution led to steady decomposition of Mg/Al-LDH structure along with the formation of various Pb precipitates such as carbonate chloride (PbCO3PbCl2) and hydroxide chloride (Pb(OH)Cl). Experimental techniques such as X-ray diffraction, X-ray photoelectron spectroscopy and cation removal isotherms were used to decipher the mechanism of uptake. This study indicates that LDH removes Cu2+ and Pb2+ transition metal cations from aqueous solution mainly by surface adsorption and precipitation.",

author = "Man Park and Choi, {Choong Lyeal} and Seo, {Young Jin} and Yeo, {Sang Kak} and Jung Choi and Sridhar Komarneni and Lee, {Jong Hee}",

note = "Funding Information: This work was supported by the Korea Research Foundation Grant funded by the Korean Government (KRF-2005-003-F00004 ). ",

year = "2007",

month = jun,

doi = "10.1016/j.clay.2006.12.006",

language = "English (US)",

volume = "37",

pages = "143--148",

journal = "Applied Clay Science",

issn = "0169-1317",

publisher = "Elsevier BV",

number = "1-2",

}

TY - JOUR

T1 - Reactions of Cu2+ and Pb2+ with Mg/Al layered double hydroxide

AU - Park, Man

AU - Choi, Choong Lyeal

AU - Seo, Young Jin

AU - Yeo, Sang Kak

AU - Choi, Jung

AU - Komarneni, Sridhar

AU - Lee, Jong Hee

N1 - Funding Information: This work was supported by the Korea Research Foundation Grant funded by the Korean Government (KRF-2005-003-F00004 ).

PY - 2007/6

Y1 - 2007/6

N2 - The adsorption mechanisms of metal cations on the surfaces of clay minerals and other minerals are important for understanding their fate in contaminated soils and in waste water treatment. The reactions of Cu2+ and Pb2+ heavy metal cations with layered double hydroxide (LDH), has been investigated in aqueous solutions to elucidate their removal behaviors by LDH. The reaction of aqueous CuCl2 solution with Mg/Al-LDH resulted in precipitation of Cu hydroxide chloride (Cu7Cl4(OH)10·H2O) along with slight decomposition of Mg/AI-LDH. On the other hand, the reaction of aqueous PbCl2 solution led to steady decomposition of Mg/Al-LDH structure along with the formation of various Pb precipitates such as carbonate chloride (PbCO3PbCl2) and hydroxide chloride (Pb(OH)Cl). Experimental techniques such as X-ray diffraction, X-ray photoelectron spectroscopy and cation removal isotherms were used to decipher the mechanism of uptake. This study indicates that LDH removes Cu2+ and Pb2+ transition metal cations from aqueous solution mainly by surface adsorption and precipitation.

AB - The adsorption mechanisms of metal cations on the surfaces of clay minerals and other minerals are important for understanding their fate in contaminated soils and in waste water treatment. The reactions of Cu2+ and Pb2+ heavy metal cations with layered double hydroxide (LDH), has been investigated in aqueous solutions to elucidate their removal behaviors by LDH. The reaction of aqueous CuCl2 solution with Mg/Al-LDH resulted in precipitation of Cu hydroxide chloride (Cu7Cl4(OH)10·H2O) along with slight decomposition of Mg/AI-LDH. On the other hand, the reaction of aqueous PbCl2 solution led to steady decomposition of Mg/Al-LDH structure along with the formation of various Pb precipitates such as carbonate chloride (PbCO3PbCl2) and hydroxide chloride (Pb(OH)Cl). Experimental techniques such as X-ray diffraction, X-ray photoelectron spectroscopy and cation removal isotherms were used to decipher the mechanism of uptake. This study indicates that LDH removes Cu2+ and Pb2+ transition metal cations from aqueous solution mainly by surface adsorption and precipitation.

UR - http://www.scopus.com/inward/record.url?scp=34249799289&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34249799289&partnerID=8YFLogxK

U2 - 10.1016/j.clay.2006.12.006

DO - 10.1016/j.clay.2006.12.006

M3 - Article

AN - SCOPUS:34249799289

SN - 0169-1317

VL - 37

SP - 143

EP - 148

JO - Applied Clay Science

JF - Applied Clay Science

IS - 1-2

ER -

Reactions of Cu²⁺ and Pb²⁺ with Mg/Al layered double hydroxide

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this