Adsorption mechanisms of hydrogels for heavy metal and organic dyes removal: A short review

Heavy metal and organic dyes produced in modern industrialization development have polluted the natural resources human live by due to their adverse effects on all biological organisms. Developing effective, economical and friendly strategies to tackle environmental pollution has been a hotspot in r...

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Main Authors: Honglin Zhu, Sunni Chen, Yangchao Luo
Format: Article
Language:English
Published: Elsevier 2023-06-01
Series:Journal of Agriculture and Food Research
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2666154323000595
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author Honglin Zhu
Sunni Chen
Yangchao Luo
author_facet Honglin Zhu
Sunni Chen
Yangchao Luo
author_sort Honglin Zhu
collection DOAJ
description Heavy metal and organic dyes produced in modern industrialization development have polluted the natural resources human live by due to their adverse effects on all biological organisms. Developing effective, economical and friendly strategies to tackle environmental pollution has been a hotspot in recent years, among which adsorption of chemical pollutants from water has been considered of utmost importance. Hydrogel-based adsorbents with three-dimensional porous structures and versatile functional groups have become the first choice, whose adsorption involves several mechanisms. In this perspective article, electrostatic interactions, hydrogen bonding, π-π interactions, ion exchange, surface complexation and coordination/chelation were introduced in detail to provide an overview for a better understanding of the action mechanisms of various hydrogels. Combining two or more mechanisms is advantageous to gain great adsorption capacity, which could be achieved via physical or chemical modification of hydrogels. This short review aims to provide theoretical guidance to design and prepare hydrogels for applications in water treatment.
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spelling doaj.art-564f779bdc3e4a1e8e4edce134cf9fc22023-05-21T04:35:37ZengElsevierJournal of Agriculture and Food Research2666-15432023-06-0112100552Adsorption mechanisms of hydrogels for heavy metal and organic dyes removal: A short reviewHonglin Zhu0Sunni Chen1Yangchao Luo2Department of Nutritional Sciences, University of Connecticut, Storrs, CT, 06269, United StatesDepartment of Nutritional Sciences, University of Connecticut, Storrs, CT, 06269, United StatesCorresponding author. Nanotechnology and Biodelivery Laboratory, Department of Nutritional Sciences, University of Connecticut, Storrs, CT, 06269-4017, United States.; Department of Nutritional Sciences, University of Connecticut, Storrs, CT, 06269, United StatesHeavy metal and organic dyes produced in modern industrialization development have polluted the natural resources human live by due to their adverse effects on all biological organisms. Developing effective, economical and friendly strategies to tackle environmental pollution has been a hotspot in recent years, among which adsorption of chemical pollutants from water has been considered of utmost importance. Hydrogel-based adsorbents with three-dimensional porous structures and versatile functional groups have become the first choice, whose adsorption involves several mechanisms. In this perspective article, electrostatic interactions, hydrogen bonding, π-π interactions, ion exchange, surface complexation and coordination/chelation were introduced in detail to provide an overview for a better understanding of the action mechanisms of various hydrogels. Combining two or more mechanisms is advantageous to gain great adsorption capacity, which could be achieved via physical or chemical modification of hydrogels. This short review aims to provide theoretical guidance to design and prepare hydrogels for applications in water treatment.http://www.sciencedirect.com/science/article/pii/S2666154323000595HydrogelAdsorption mechanismPollutantWater treatment
spellingShingle Honglin Zhu
Sunni Chen
Yangchao Luo
Adsorption mechanisms of hydrogels for heavy metal and organic dyes removal: A short review
Journal of Agriculture and Food Research
Hydrogel
Adsorption mechanism
Pollutant
Water treatment
title Adsorption mechanisms of hydrogels for heavy metal and organic dyes removal: A short review
title_full Adsorption mechanisms of hydrogels for heavy metal and organic dyes removal: A short review
title_fullStr Adsorption mechanisms of hydrogels for heavy metal and organic dyes removal: A short review
title_full_unstemmed Adsorption mechanisms of hydrogels for heavy metal and organic dyes removal: A short review
title_short Adsorption mechanisms of hydrogels for heavy metal and organic dyes removal: A short review
title_sort adsorption mechanisms of hydrogels for heavy metal and organic dyes removal a short review
topic Hydrogel
Adsorption mechanism
Pollutant
Water treatment
url http://www.sciencedirect.com/science/article/pii/S2666154323000595
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