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Title

Heavy Metal Extraction by EDTA Washing: Optimization using Central Composite Design

Year: 1396
COI: ICSAU05_1084
Language: EnglishView: 232
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Authors

Arsalan Rasulifard - M.Sc. Student, Department of Civil Engineering, Urmia University, Urmia, I.R. Iran
Kazem Badv - Professor, Department of Civil Engineering, Urmia University, Urmia, I.R. Iran

Abstract:

The occurrences of heavy metal contaminated sites and soils and the need for devising solutions have become global issues of serious concern. Soil washing, one of the few permanent treatment alternatives to remove metal contaminants from soils, requires an evaluation of its efficiency in simultaneously removing different metals. In this study, we employed ethylenediaminetetraacetic acid (EDTA), recognized as the most effective synthetic chelating agent, to extract Pb, Zn, and Cd from polluted soil. We then employed response surface methodology approach using faced centered central composite design for modeling, evaluating and optimizing the influence of EDTA concentration (25–175 mM), pH (4-7) and washing time (30-90 min) on Pb, Zn, and Cd ions extracted into the EDTA solution. The optimization process showed that the extraction efficiencies were 54.4, 44.9, and 82.65 % in Zinc Specialized Industrial Complex soil for Pb, Zn, and Cd, respectively.

Keywords:

Soil washing, EDTA, Optimization, Heavy metals, Central composite design

Paper COI Code

This Paper COI Code is ICSAU05_1084. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/735493/

How to Cite to This Paper:

If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Rasulifard, Arsalan and Badv, Kazem,1396,Heavy Metal Extraction by EDTA Washing: Optimization using Central Composite Design,5th international Congress on civil engineering, architecture and urban development,Tehran,https://civilica.com/doc/735493

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Type of center: دانشگاه دولتی
Paper count: 12,714
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