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Efficient and synergistic removal of tetracycline and Cu(II) using novel magnetic multi-amine resins

A series of magnetic multi-amine resins (MMARs, named E1D9-E9D1) was proposed for the removal of tetracycline (TC) and Cu(II) in sole and binary solutions. Results showed that the N content of the resins increased sharply from 1.7% to 15.49%, and the BET surface areas decreased from 1433.4 m(2)/g to...

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Autores principales: Zhu, Zengyin, Zhang, Mancheng, Wang, Wei, Zhou, Qing, Liu, Fuqiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5859091/
https://www.ncbi.nlm.nih.gov/pubmed/29555934
http://dx.doi.org/10.1038/s41598-018-23205-9
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author Zhu, Zengyin
Zhang, Mancheng
Wang, Wei
Zhou, Qing
Liu, Fuqiang
author_facet Zhu, Zengyin
Zhang, Mancheng
Wang, Wei
Zhou, Qing
Liu, Fuqiang
author_sort Zhu, Zengyin
collection PubMed
description A series of magnetic multi-amine resins (MMARs, named E1D9-E9D1) was proposed for the removal of tetracycline (TC) and Cu(II) in sole and binary solutions. Results showed that the N content of the resins increased sharply from 1.7% to 15.49%, and the BET surface areas decreased from 1433.4 m(2)/g to 8.9 m(2)/g with methyl acrylate ratio increasing from E1D9 to E9D1. Their adsorption capacities for TC and Cu(II) could reach 0.243 and 0.453 mmol/g, respectively. The adsorption isotherms of TC onto MMARs transformed from heterogeneous adsorption to monolayer-type adsorption with DVB monomer ratio in resin matrix decrease, suggesting the dominant physical adsorption between TC and benzene rings. TC adsorption capacity onto E9D1 was higher than that onto E7D3 when the equilibrium concentration of TC exceeded 0.043 mmol/L because the electrostatic interaction between negatively charged groups of TC and protonated amines of adsorbents could compensate for the capacity loss resulting from BET surface area decrease. In the binary system, the electrostatic interaction between negatively charged TC-Cu(II) complex and protonated amines of adsorbents was responsible for the synergistic adsorption onto E7D3 and E9D1. The XPS spectra of magnetic resins before and after adsorption were characterized to prove the probable adsorption mechanisms. This work provides alternative adsorbent for the efficient treatment of multiple pollution with different concentrations of organic micropollutants and heavy metal ions.
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spelling pubmed-58590912018-03-20 Efficient and synergistic removal of tetracycline and Cu(II) using novel magnetic multi-amine resins Zhu, Zengyin Zhang, Mancheng Wang, Wei Zhou, Qing Liu, Fuqiang Sci Rep Article A series of magnetic multi-amine resins (MMARs, named E1D9-E9D1) was proposed for the removal of tetracycline (TC) and Cu(II) in sole and binary solutions. Results showed that the N content of the resins increased sharply from 1.7% to 15.49%, and the BET surface areas decreased from 1433.4 m(2)/g to 8.9 m(2)/g with methyl acrylate ratio increasing from E1D9 to E9D1. Their adsorption capacities for TC and Cu(II) could reach 0.243 and 0.453 mmol/g, respectively. The adsorption isotherms of TC onto MMARs transformed from heterogeneous adsorption to monolayer-type adsorption with DVB monomer ratio in resin matrix decrease, suggesting the dominant physical adsorption between TC and benzene rings. TC adsorption capacity onto E9D1 was higher than that onto E7D3 when the equilibrium concentration of TC exceeded 0.043 mmol/L because the electrostatic interaction between negatively charged groups of TC and protonated amines of adsorbents could compensate for the capacity loss resulting from BET surface area decrease. In the binary system, the electrostatic interaction between negatively charged TC-Cu(II) complex and protonated amines of adsorbents was responsible for the synergistic adsorption onto E7D3 and E9D1. The XPS spectra of magnetic resins before and after adsorption were characterized to prove the probable adsorption mechanisms. This work provides alternative adsorbent for the efficient treatment of multiple pollution with different concentrations of organic micropollutants and heavy metal ions. Nature Publishing Group UK 2018-03-19 /pmc/articles/PMC5859091/ /pubmed/29555934 http://dx.doi.org/10.1038/s41598-018-23205-9 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhu, Zengyin
Zhang, Mancheng
Wang, Wei
Zhou, Qing
Liu, Fuqiang
Efficient and synergistic removal of tetracycline and Cu(II) using novel magnetic multi-amine resins
title Efficient and synergistic removal of tetracycline and Cu(II) using novel magnetic multi-amine resins
title_full Efficient and synergistic removal of tetracycline and Cu(II) using novel magnetic multi-amine resins
title_fullStr Efficient and synergistic removal of tetracycline and Cu(II) using novel magnetic multi-amine resins
title_full_unstemmed Efficient and synergistic removal of tetracycline and Cu(II) using novel magnetic multi-amine resins
title_short Efficient and synergistic removal of tetracycline and Cu(II) using novel magnetic multi-amine resins
title_sort efficient and synergistic removal of tetracycline and cu(ii) using novel magnetic multi-amine resins
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5859091/
https://www.ncbi.nlm.nih.gov/pubmed/29555934
http://dx.doi.org/10.1038/s41598-018-23205-9
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