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Chelating capture and magnetic removal of non-magnetic heavy metal substances from soil
A soil remediation method based on magnetic beneficiation is reported. A new magnetic solid chelator powder, FS@IDA (core-shell Fe(3)O(4)@SiO(2) nanoparticles coated with iminodiacetic acid chelators), was used as a reactive magnetic carrier to selectively capture non-magnetic heavy metals in soil b...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4754707/ https://www.ncbi.nlm.nih.gov/pubmed/26878770 http://dx.doi.org/10.1038/srep21027 |
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author | Fan, Liren Song, Jiqing Bai, Wenbo Wang, Shengping Zeng, Ming Li, Xiaoming Zhou, Yang Li, Haifeng Lu, Haiwei |
author_facet | Fan, Liren Song, Jiqing Bai, Wenbo Wang, Shengping Zeng, Ming Li, Xiaoming Zhou, Yang Li, Haifeng Lu, Haiwei |
author_sort | Fan, Liren |
collection | PubMed |
description | A soil remediation method based on magnetic beneficiation is reported. A new magnetic solid chelator powder, FS@IDA (core-shell Fe(3)O(4)@SiO(2) nanoparticles coated with iminodiacetic acid chelators), was used as a reactive magnetic carrier to selectively capture non-magnetic heavy metals in soil by chelation and removal by magnetic separation. FS@IDA was prepared via inorganic-organic and organic synthesis reactions that generated chelating groups on the surface of magnetic, multi-core, core-shell Fe(3)O(4)@SiO(2) (FS) nanoparticles. These reactions used a silane coupling agent and sodium chloroacetate. The results show that FS@IDA could chelate the heavy metal component of Cd, Zn, Pb, Cu and Ni carbonates, lead sulfate and lead chloride in water-insoluble salt systems. The resulting FS@IDA-Cd and FS@IDA-Pb chelates could be magnetically separated, resulting in removal rates of approximately 84.9% and 72.2% for Cd and Pb, respectively. FS@IDA could not remove the residual heavy metals and those bound to organic matter in the soil. FS@IDA did not significantly alter the chemical composition of the soil, and it allowed for fast chelating capture, simple magnetic separation and facilitated heavy metal elution. FS@IDA could also be easily prepared and reprocessed. |
format | Online Article Text |
id | pubmed-4754707 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-47547072016-02-24 Chelating capture and magnetic removal of non-magnetic heavy metal substances from soil Fan, Liren Song, Jiqing Bai, Wenbo Wang, Shengping Zeng, Ming Li, Xiaoming Zhou, Yang Li, Haifeng Lu, Haiwei Sci Rep Article A soil remediation method based on magnetic beneficiation is reported. A new magnetic solid chelator powder, FS@IDA (core-shell Fe(3)O(4)@SiO(2) nanoparticles coated with iminodiacetic acid chelators), was used as a reactive magnetic carrier to selectively capture non-magnetic heavy metals in soil by chelation and removal by magnetic separation. FS@IDA was prepared via inorganic-organic and organic synthesis reactions that generated chelating groups on the surface of magnetic, multi-core, core-shell Fe(3)O(4)@SiO(2) (FS) nanoparticles. These reactions used a silane coupling agent and sodium chloroacetate. The results show that FS@IDA could chelate the heavy metal component of Cd, Zn, Pb, Cu and Ni carbonates, lead sulfate and lead chloride in water-insoluble salt systems. The resulting FS@IDA-Cd and FS@IDA-Pb chelates could be magnetically separated, resulting in removal rates of approximately 84.9% and 72.2% for Cd and Pb, respectively. FS@IDA could not remove the residual heavy metals and those bound to organic matter in the soil. FS@IDA did not significantly alter the chemical composition of the soil, and it allowed for fast chelating capture, simple magnetic separation and facilitated heavy metal elution. FS@IDA could also be easily prepared and reprocessed. Nature Publishing Group 2016-02-16 /pmc/articles/PMC4754707/ /pubmed/26878770 http://dx.doi.org/10.1038/srep21027 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Fan, Liren Song, Jiqing Bai, Wenbo Wang, Shengping Zeng, Ming Li, Xiaoming Zhou, Yang Li, Haifeng Lu, Haiwei Chelating capture and magnetic removal of non-magnetic heavy metal substances from soil |
title | Chelating capture and magnetic removal of non-magnetic heavy metal substances from soil |
title_full | Chelating capture and magnetic removal of non-magnetic heavy metal substances from soil |
title_fullStr | Chelating capture and magnetic removal of non-magnetic heavy metal substances from soil |
title_full_unstemmed | Chelating capture and magnetic removal of non-magnetic heavy metal substances from soil |
title_short | Chelating capture and magnetic removal of non-magnetic heavy metal substances from soil |
title_sort | chelating capture and magnetic removal of non-magnetic heavy metal substances from soil |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4754707/ https://www.ncbi.nlm.nih.gov/pubmed/26878770 http://dx.doi.org/10.1038/srep21027 |
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