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231225s2023 xx |||||o 00| ||eng c |
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|a 10.1080/09593330.2021.2020339
|2 doi
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|a pubmed25n1114.xml
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|a (DE-627)NLM33455196X
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|a (NLM)34919032
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Yamada, Kazunori
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Development of recoverable adsorbents for Cr(VI) ions by grafting of a dimethylamino group-containing monomer on polyethylene substrate and subsequent quaternization
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 30.05.2023
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|a Date Revised 30.05.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a A polymeric adsorbent for removal of hexavalent chromium (Cr(VI)) ions was developed by the photografting of 2-(dimethylamino)ethyl methacrylate (DMAEMA) to a polyethylene (PE) mesh and subsequent quaternization with iodoalkanes of different alkyl chain lengths. The grafting of DMAEMA and subsequent quaternization were verified by the FT-IR and XPS measurements. The Cr(VI) ion adsorption capacity of the DMAEMA-grafted PE meshes had the maximum value at the grafted amount of 2.6 mmol/g in a 0.20 mM K2Cr2O7 solution at pH 3.0 and 30°C. The adsorption behaviour obeyed the pseudo-second order kinetic model and well expressed by Langmuir isotherm. These results suggest that the Cr(VI) ion adsorption occurs through the electrostatic interaction mainly between protonated dimethylamino groups and hydrochromate (HCrO4-) ions. The adsorption capacity of the quaternized PE-g-PDMAEMA meshes increased with an increase in the degree of quaternization and/or the alkyl chain length of the iodoalkanes used and the maximum adsorption ratio was obtained at the degree of quaternization of 54.2% for the iodoheptane-quaternized PE-g-PDMAEMA (PE-g-QC7PDMAEMA) mesh. This value was about 1.86 times higher than that of the PE-g-PDAMEMA mesh. Cr(VI) ions were successfully desorbed from the PE-g-PDMAEMA and PE-g-QC7PDMAEMA meshes in eluents such as NaOH, NaCl, and NH4Cl. In 0.50 M NaCl, 0.10 M NH4Cl, and 0.50 mM NaOH, the adsorption and desorption process was repeatedly performed without any considerable decrease and the desorption behaviour obeyed the pseudo-second order kinetic model. These results emphasise that the PE-g-PDMAEMA meshes and their quaternized products can be applied as an adsorbent for Cr(VI) ions
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|a Journal Article
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|a 2-(dimethylamino)ethyl methacrylate
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|a Polyethylene
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|a adsorption
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|a hexavalent chromium
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|a quaternization
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|a poly(2-(dimethylamino)ethyl methacrylate)
|2 NLM
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|a Polyethylene
|2 NLM
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| 650 |
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|a 9002-88-4
|2 NLM
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|a chromium hexavalent ion
|2 NLM
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|a 18540-29-9
|2 NLM
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| 650 |
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|a 2-(dimethylamino)ethyl methacrylate
|2 NLM
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| 650 |
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|a O0V97PV2G1
|2 NLM
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| 650 |
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|a Sodium Chloride
|2 NLM
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| 650 |
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|a 451W47IQ8X
|2 NLM
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|a Sodium Hydroxide
|2 NLM
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|a 55X04QC32I
|2 NLM
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|a Chromium
|2 NLM
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|a 0R0008Q3JB
|2 NLM
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| 650 |
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|a Water Pollutants, Chemical
|2 NLM
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| 650 |
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|a Ions
|2 NLM
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| 700 |
1 |
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|a Kitao, Yoshinori
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Asamoto, Hiromichi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Minamisawa, Hiroaki
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Environmental technology
|d 1993
|g 44(2023), 14 vom: 15. Juni, Seite 2025-2038
|w (DE-627)NLM098202545
|x 1479-487X
|7 nnas
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| 773 |
1 |
8 |
|g volume:44
|g year:2023
|g number:14
|g day:15
|g month:06
|g pages:2025-2038
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|u http://dx.doi.org/10.1080/09593330.2021.2020339
|3 Volltext
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|a AR
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|d 44
|j 2023
|e 14
|b 15
|c 06
|h 2025-2038
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