Removal mechanisms of copper using steel-making slag: adsorption and precipitation

Do Hyung Kim; Min Chul Shin; Hyun Doc Choi; Chang Il Seo; Kitae Baek

doi:10.1016/j.desal.2007.01.226

Removal mechanisms of copper using steel-making slag: adsorption and precipitation

Do Hyung Kim
, Min Chul Shin
, Hyun Doc Choi
, Chang Il Seo
, Kitae Baek^*

^*Corresponding author for this work

Environmental Engineering

Kumoh National Institute of Technology
Environmental Management Corporation

Research output: Contribution to journal › Journal article › peer-review

132 Scopus citations

Abstract

Slag, which consists of calcium oxide, aluminium oxide, and other metal oxides, is an abundant by-product in steel-making process. It has been used as adsorbents to remove various heavy metals and the major removal mechanisms are precipitation and adsorption on the surface of metal oxide. However, the relative contribution of two removal mechanisms has not reported. In this study, the removal characteristics of copper were investigated in terms of sorption kinetics and sorption isotherms. As initial pH of solution increased, the sorption capacity of slags increased dramatically. We evaluated the relative contribution of two mechanisms in the copper removal by steel-making slag. At above pH 3.0, contribution of adsorption to overall removal of copper was less than 12%. As a result, most of copper was removed by slag as a form or copper hydroxide.

Original language	English
Pages (from-to)	283-289
Number of pages	7
Journal	Desalination
Volume	223
Issue number	1-3
DOIs	https://doi.org/10.1016/j.desal.2007.01.226
State	Published - 2008.03.1

Keywords

Adsorption
Copper
Precipitation
Relative contribution

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10.1016/j.desal.2007.01.226

Cite this

@article{413c6a9dda134be59cf4db1bdf37f207,

title = "Removal mechanisms of copper using steel-making slag: adsorption and precipitation",

abstract = "Slag, which consists of calcium oxide, aluminium oxide, and other metal oxides, is an abundant by-product in steel-making process. It has been used as adsorbents to remove various heavy metals and the major removal mechanisms are precipitation and adsorption on the surface of metal oxide. However, the relative contribution of two removal mechanisms has not reported. In this study, the removal characteristics of copper were investigated in terms of sorption kinetics and sorption isotherms. As initial pH of solution increased, the sorption capacity of slags increased dramatically. We evaluated the relative contribution of two mechanisms in the copper removal by steel-making slag. At above pH 3.0, contribution of adsorption to overall removal of copper was less than 12\%. As a result, most of copper was removed by slag as a form or copper hydroxide.",

keywords = "Adsorption, Copper, Precipitation, Relative contribution",

author = "Kim, \{Do Hyung\} and Shin, \{Min Chul\} and Choi, \{Hyun Doc\} and Seo, \{Chang Il\} and Kitae Baek",

year = "2008",

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doi = "10.1016/j.desal.2007.01.226",

language = "English",

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pages = "283--289",

journal = "Desalination",

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}

TY - JOUR

T1 - Removal mechanisms of copper using steel-making slag

T2 - adsorption and precipitation

AU - Kim, Do Hyung

AU - Shin, Min Chul

AU - Choi, Hyun Doc

AU - Seo, Chang Il

AU - Baek, Kitae

PY - 2008/3/1

Y1 - 2008/3/1

N2 - Slag, which consists of calcium oxide, aluminium oxide, and other metal oxides, is an abundant by-product in steel-making process. It has been used as adsorbents to remove various heavy metals and the major removal mechanisms are precipitation and adsorption on the surface of metal oxide. However, the relative contribution of two removal mechanisms has not reported. In this study, the removal characteristics of copper were investigated in terms of sorption kinetics and sorption isotherms. As initial pH of solution increased, the sorption capacity of slags increased dramatically. We evaluated the relative contribution of two mechanisms in the copper removal by steel-making slag. At above pH 3.0, contribution of adsorption to overall removal of copper was less than 12%. As a result, most of copper was removed by slag as a form or copper hydroxide.

AB - Slag, which consists of calcium oxide, aluminium oxide, and other metal oxides, is an abundant by-product in steel-making process. It has been used as adsorbents to remove various heavy metals and the major removal mechanisms are precipitation and adsorption on the surface of metal oxide. However, the relative contribution of two removal mechanisms has not reported. In this study, the removal characteristics of copper were investigated in terms of sorption kinetics and sorption isotherms. As initial pH of solution increased, the sorption capacity of slags increased dramatically. We evaluated the relative contribution of two mechanisms in the copper removal by steel-making slag. At above pH 3.0, contribution of adsorption to overall removal of copper was less than 12%. As a result, most of copper was removed by slag as a form or copper hydroxide.

KW - Adsorption

KW - Copper

KW - Precipitation

KW - Relative contribution

UR - https://www.scopus.com/pages/publications/38749092989

U2 - 10.1016/j.desal.2007.01.226

DO - 10.1016/j.desal.2007.01.226

M3 - Journal article

AN - SCOPUS:38749092989

SN - 0011-9164

VL - 223

SP - 283

EP - 289

JO - Desalination

JF - Desalination

IS - 1-3

ER -

Removal mechanisms of copper using steel-making slag: adsorption and precipitation

Abstract

Keywords

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