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Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin
Cu removal by a novel multi-amines decorated resin (PAMD) from wastewater in the absence or presence of citric acid (CA) was examined. Adsorption capacity of Cu onto PAMD markedly increased by 186% to 5.07 mmol/g in the presence of CA, up to 7 times of that onto four commercial resins under the same...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4649996/ https://www.ncbi.nlm.nih.gov/pubmed/25962970 http://dx.doi.org/10.1038/srep09944 |
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author | Ling, Chen Liu, Fuqiang Pei, Zhiguo Zhang, Xiaopeng Wei, Mengmeng Zhang, Yanhong Zheng, Lirong Zhang, Jing Li, Aimin Xing, Baoshan |
author_facet | Ling, Chen Liu, Fuqiang Pei, Zhiguo Zhang, Xiaopeng Wei, Mengmeng Zhang, Yanhong Zheng, Lirong Zhang, Jing Li, Aimin Xing, Baoshan |
author_sort | Ling, Chen |
collection | PubMed |
description | Cu removal by a novel multi-amines decorated resin (PAMD) from wastewater in the absence or presence of citric acid (CA) was examined. Adsorption capacity of Cu onto PAMD markedly increased by 186% to 5.07 mmol/g in the presence of CA, up to 7 times of that onto four commercial resins under the same conditions. Preloaded and kinetic studies demonstrated adsorption of [Cu-CA] complex instead of CA site-bridging and variations of adsorbate species were qualitatively illustrated. The interaction configuration was further studied with ESI-MS, FTIR, XPS and XANES characterizations. The large enhancement of Cu adsorption in Cu-CA bi-solutes systems was attributed to mechanism change from single-site to dual-sites interaction in which cationic or neutral Cu species (Cu(2+) and CuHL(0)) coordinated with neutral amine sites and anionic complex species (CuL(−) and Cu(2)L(2)(2−)) directly interacted with protonated amine sites via electrostatic attraction, and the ratio of the two interactions was approximately 0.5 for the equimolar bi-solutes system. Moreover, commonly coexisting ions in wastewaters had no obvious effect on the superior performance of PAMD. Also, Cu and CA could be recovered completely with HCl. Therefore, PAMD has a great potential to efficiently remove heavy metal ions from wastewaters in the presence of organic acids. |
format | Online Article Text |
id | pubmed-4649996 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-46499962015-11-24 Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin Ling, Chen Liu, Fuqiang Pei, Zhiguo Zhang, Xiaopeng Wei, Mengmeng Zhang, Yanhong Zheng, Lirong Zhang, Jing Li, Aimin Xing, Baoshan Sci Rep Article Cu removal by a novel multi-amines decorated resin (PAMD) from wastewater in the absence or presence of citric acid (CA) was examined. Adsorption capacity of Cu onto PAMD markedly increased by 186% to 5.07 mmol/g in the presence of CA, up to 7 times of that onto four commercial resins under the same conditions. Preloaded and kinetic studies demonstrated adsorption of [Cu-CA] complex instead of CA site-bridging and variations of adsorbate species were qualitatively illustrated. The interaction configuration was further studied with ESI-MS, FTIR, XPS and XANES characterizations. The large enhancement of Cu adsorption in Cu-CA bi-solutes systems was attributed to mechanism change from single-site to dual-sites interaction in which cationic or neutral Cu species (Cu(2+) and CuHL(0)) coordinated with neutral amine sites and anionic complex species (CuL(−) and Cu(2)L(2)(2−)) directly interacted with protonated amine sites via electrostatic attraction, and the ratio of the two interactions was approximately 0.5 for the equimolar bi-solutes system. Moreover, commonly coexisting ions in wastewaters had no obvious effect on the superior performance of PAMD. Also, Cu and CA could be recovered completely with HCl. Therefore, PAMD has a great potential to efficiently remove heavy metal ions from wastewaters in the presence of organic acids. Nature Publishing Group 2015-05-12 /pmc/articles/PMC4649996/ /pubmed/25962970 http://dx.doi.org/10.1038/srep09944 Text en Copyright © 2015, 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 Ling, Chen Liu, Fuqiang Pei, Zhiguo Zhang, Xiaopeng Wei, Mengmeng Zhang, Yanhong Zheng, Lirong Zhang, Jing Li, Aimin Xing, Baoshan Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin |
title | Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin |
title_full | Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin |
title_fullStr | Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin |
title_full_unstemmed | Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin |
title_short | Citric Acid Enhanced Copper Removal by a Novel Multi-amines Decorated Resin |
title_sort | citric acid enhanced copper removal by a novel multi-amines decorated resin |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4649996/ https://www.ncbi.nlm.nih.gov/pubmed/25962970 http://dx.doi.org/10.1038/srep09944 |
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