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Understanding Mechanism of Adsorption in the Decolorization of Aqueous Methyl Violet (6B) Solution by Okra Polysaccharides: Experiment and Theory

[Image: see text] Optimal conditions for ultrasonic-assisted extraction of polysaccharide from Chinese okra were found using response surface methodology. The okra polysaccharide (OPS) was used for the adsorption of methyl violet 6B (MV). Conditions for maximal adsorption efficiency of MV were estab...

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Autores principales: Wang, Mengdan, Gu, Qun, Luo, Yanlong, Bukhvalov, Danil, Ma, Xiaofeng, Zhu, Lijun, Li, Gefei, Luo, Zhenyang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6822221/
https://www.ncbi.nlm.nih.gov/pubmed/31681897
http://dx.doi.org/10.1021/acsomega.9b02768
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author Wang, Mengdan
Gu, Qun
Luo, Yanlong
Bukhvalov, Danil
Ma, Xiaofeng
Zhu, Lijun
Li, Gefei
Luo, Zhenyang
author_facet Wang, Mengdan
Gu, Qun
Luo, Yanlong
Bukhvalov, Danil
Ma, Xiaofeng
Zhu, Lijun
Li, Gefei
Luo, Zhenyang
author_sort Wang, Mengdan
collection PubMed
description [Image: see text] Optimal conditions for ultrasonic-assisted extraction of polysaccharide from Chinese okra were found using response surface methodology. The okra polysaccharide (OPS) was used for the adsorption of methyl violet 6B (MV). Conditions for maximal adsorption efficiency of MV were established. The mechanism of MV adsorption was investigated by the characterization and physicochemical analysis of OPS before and after the adsorption of MV. Both infrared (IR) analysis and molecular dynamics (MD) simulation suggest that MV adsorption by OPS was an electrostatic interaction between MV and oxygen-containing groups of OPS. Further, the results of first-principles calculation were in agreement with IR spectroscopy measurements and MD simulation, which were all consistent with the suggested adsorption mechanism. Optimization of okra extraction conditions, maximized efficiency of MV adsorption by OPS, and the understanding of the adsorption mechanism are the highlights of this work, providing a reference for promising applications of OPS in the treatment of wastewater in textile, paper, and other industries.
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spelling pubmed-68222212019-11-01 Understanding Mechanism of Adsorption in the Decolorization of Aqueous Methyl Violet (6B) Solution by Okra Polysaccharides: Experiment and Theory Wang, Mengdan Gu, Qun Luo, Yanlong Bukhvalov, Danil Ma, Xiaofeng Zhu, Lijun Li, Gefei Luo, Zhenyang ACS Omega [Image: see text] Optimal conditions for ultrasonic-assisted extraction of polysaccharide from Chinese okra were found using response surface methodology. The okra polysaccharide (OPS) was used for the adsorption of methyl violet 6B (MV). Conditions for maximal adsorption efficiency of MV were established. The mechanism of MV adsorption was investigated by the characterization and physicochemical analysis of OPS before and after the adsorption of MV. Both infrared (IR) analysis and molecular dynamics (MD) simulation suggest that MV adsorption by OPS was an electrostatic interaction between MV and oxygen-containing groups of OPS. Further, the results of first-principles calculation were in agreement with IR spectroscopy measurements and MD simulation, which were all consistent with the suggested adsorption mechanism. Optimization of okra extraction conditions, maximized efficiency of MV adsorption by OPS, and the understanding of the adsorption mechanism are the highlights of this work, providing a reference for promising applications of OPS in the treatment of wastewater in textile, paper, and other industries. American Chemical Society 2019-10-18 /pmc/articles/PMC6822221/ /pubmed/31681897 http://dx.doi.org/10.1021/acsomega.9b02768 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Wang, Mengdan
Gu, Qun
Luo, Yanlong
Bukhvalov, Danil
Ma, Xiaofeng
Zhu, Lijun
Li, Gefei
Luo, Zhenyang
Understanding Mechanism of Adsorption in the Decolorization of Aqueous Methyl Violet (6B) Solution by Okra Polysaccharides: Experiment and Theory
title Understanding Mechanism of Adsorption in the Decolorization of Aqueous Methyl Violet (6B) Solution by Okra Polysaccharides: Experiment and Theory
title_full Understanding Mechanism of Adsorption in the Decolorization of Aqueous Methyl Violet (6B) Solution by Okra Polysaccharides: Experiment and Theory
title_fullStr Understanding Mechanism of Adsorption in the Decolorization of Aqueous Methyl Violet (6B) Solution by Okra Polysaccharides: Experiment and Theory
title_full_unstemmed Understanding Mechanism of Adsorption in the Decolorization of Aqueous Methyl Violet (6B) Solution by Okra Polysaccharides: Experiment and Theory
title_short Understanding Mechanism of Adsorption in the Decolorization of Aqueous Methyl Violet (6B) Solution by Okra Polysaccharides: Experiment and Theory
title_sort understanding mechanism of adsorption in the decolorization of aqueous methyl violet (6b) solution by okra polysaccharides: experiment and theory
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6822221/
https://www.ncbi.nlm.nih.gov/pubmed/31681897
http://dx.doi.org/10.1021/acsomega.9b02768
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