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Modification of Lignocellulosic Materials with a Mixture of m-DMDHEU/Choline Chloride to Remove CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) in Aqueous Solution

[Image: see text] A new denaturation agent is the mixture of 4,5-dihydroxy-1,3-bis(methoxymethyl)imidazolidin-2-one (m-DMDHEU)/choline chloride (CC) introduced to modify three kinds of lignocellulosic materials containing different lignin contents in the following order: cotton used in medicine <...

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Autores principales: Nguyen, Dang T., Tran, Trung C., Pham, Sang P. H., Bui, Uyen T., Hoang, Ngon T., Pham, Quan T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7391847/
https://www.ncbi.nlm.nih.gov/pubmed/32743206
http://dx.doi.org/10.1021/acsomega.0c01984
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author Nguyen, Dang T.
Tran, Trung C.
Pham, Sang P. H.
Bui, Uyen T.
Hoang, Ngon T.
Pham, Quan T.
author_facet Nguyen, Dang T.
Tran, Trung C.
Pham, Sang P. H.
Bui, Uyen T.
Hoang, Ngon T.
Pham, Quan T.
author_sort Nguyen, Dang T.
collection PubMed
description [Image: see text] A new denaturation agent is the mixture of 4,5-dihydroxy-1,3-bis(methoxymethyl)imidazolidin-2-one (m-DMDHEU)/choline chloride (CC) introduced to modify three kinds of lignocellulosic materials containing different lignin contents in the following order: cotton used in medicine < sawdust from acacia auriculiformis wood < powder from the coconut shell. The modification process is carried out through two main steps: 0.2 N NaOH solution with 70% v/v ethanol and 30% v/v water was applied to remove lignin and activate the initial raw materials, and then delignified materials were modified with m-DMDHEU/CC by using a parched heat supply method after chemical impregnation. Structural characterictics and physicochemical properties of modified materials were tested and dissected by scanning electron microscopy, Fourier transform infrared spectroscopy, solid-state (13)C nuclear magnetic resonance spectroscopy (solid-state (13)C CP-MAS NMR), specific surface area, and pH at the point of zero charge (pH(PZC)). The ability to adsorb and exchange anions of modified materials was referred and examined by using aqueous solutions containing CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) anions in different conditions. The results revealed that anionite lignocellulosic materials could separate these anions with very good efficiency and better than strong anion exchange resin (GA-13) in the same conditions; outlet water could meet the permissible drinking and living water standards; and the m-DMDHEU cross-link bridge also was a good bridge to connect CC to cellulose chain beside other common urea cross-link bridges.
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spelling pubmed-73918472020-07-31 Modification of Lignocellulosic Materials with a Mixture of m-DMDHEU/Choline Chloride to Remove CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) in Aqueous Solution Nguyen, Dang T. Tran, Trung C. Pham, Sang P. H. Bui, Uyen T. Hoang, Ngon T. Pham, Quan T. ACS Omega [Image: see text] A new denaturation agent is the mixture of 4,5-dihydroxy-1,3-bis(methoxymethyl)imidazolidin-2-one (m-DMDHEU)/choline chloride (CC) introduced to modify three kinds of lignocellulosic materials containing different lignin contents in the following order: cotton used in medicine < sawdust from acacia auriculiformis wood < powder from the coconut shell. The modification process is carried out through two main steps: 0.2 N NaOH solution with 70% v/v ethanol and 30% v/v water was applied to remove lignin and activate the initial raw materials, and then delignified materials were modified with m-DMDHEU/CC by using a parched heat supply method after chemical impregnation. Structural characterictics and physicochemical properties of modified materials were tested and dissected by scanning electron microscopy, Fourier transform infrared spectroscopy, solid-state (13)C nuclear magnetic resonance spectroscopy (solid-state (13)C CP-MAS NMR), specific surface area, and pH at the point of zero charge (pH(PZC)). The ability to adsorb and exchange anions of modified materials was referred and examined by using aqueous solutions containing CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) anions in different conditions. The results revealed that anionite lignocellulosic materials could separate these anions with very good efficiency and better than strong anion exchange resin (GA-13) in the same conditions; outlet water could meet the permissible drinking and living water standards; and the m-DMDHEU cross-link bridge also was a good bridge to connect CC to cellulose chain beside other common urea cross-link bridges. American Chemical Society 2020-07-15 /pmc/articles/PMC7391847/ /pubmed/32743206 http://dx.doi.org/10.1021/acsomega.0c01984 Text en Copyright © 2020 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 Nguyen, Dang T.
Tran, Trung C.
Pham, Sang P. H.
Bui, Uyen T.
Hoang, Ngon T.
Pham, Quan T.
Modification of Lignocellulosic Materials with a Mixture of m-DMDHEU/Choline Chloride to Remove CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) in Aqueous Solution
title Modification of Lignocellulosic Materials with a Mixture of m-DMDHEU/Choline Chloride to Remove CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) in Aqueous Solution
title_full Modification of Lignocellulosic Materials with a Mixture of m-DMDHEU/Choline Chloride to Remove CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) in Aqueous Solution
title_fullStr Modification of Lignocellulosic Materials with a Mixture of m-DMDHEU/Choline Chloride to Remove CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) in Aqueous Solution
title_full_unstemmed Modification of Lignocellulosic Materials with a Mixture of m-DMDHEU/Choline Chloride to Remove CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) in Aqueous Solution
title_short Modification of Lignocellulosic Materials with a Mixture of m-DMDHEU/Choline Chloride to Remove CrO(4)(2–), NO(3)(–), and H(2)AsO(4)(–) in Aqueous Solution
title_sort modification of lignocellulosic materials with a mixture of m-dmdheu/choline chloride to remove cro(4)(2–), no(3)(–), and h(2)aso(4)(–) in aqueous solution
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7391847/
https://www.ncbi.nlm.nih.gov/pubmed/32743206
http://dx.doi.org/10.1021/acsomega.0c01984
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