New inorganic (an)ion exchangers based on Mg–Al hydrous oxides: (Alkoxide-free) sol–gel synthesis and characterisation

Handle URI:
http://hdl.handle.net/10754/598972
Title:
New inorganic (an)ion exchangers based on Mg–Al hydrous oxides: (Alkoxide-free) sol–gel synthesis and characterisation
Authors:
Chubar, Natalia
Abstract:
New inorganic ion exchangers based on double Mg-Al hydrous oxides were generated via the new non-traditional sol-gel synthesis method which avoids using metal alkoxides as raw materials. Surface chemical and adsorptive properties of the final products were controlled by several ways of hydrogels and xerogels treatments which produced the materials of the layered structure, mixed hydrous oxides or amorphous adsorbents. The final adsorptive materials obtained via thermal treatment of xerogels were the layered mesoporous materials with carbonate in the interlayer space, surface abundance with hydroxylic groups and maximum adsorptive capacity to arsenate. Higher affinity of Mg-Al hydrous oxides towards H2AsO4- is confirmed by steep adsorption isotherms having plateau (removal capacity) at 220. mg[As]. gdw-1 for the best sample at pH = 7, fast adsorption kinetics and little pH effect. Adsorption of arsenite, fluoride, bromate, bromide, selenate, borate by Mg-Al hydrous oxides was few times high either competitive (depending on the anion) as compare with the conventional inorganic ion exchange adsorbents. © 2011 Elsevier Inc.
Citation:
Chubar N (2011) New inorganic (an)ion exchangers based on Mg–Al hydrous oxides: (Alkoxide-free) sol–gel synthesis and characterisation. Journal of Colloid and Interface Science 357: 198–209. Available: http://dx.doi.org/10.1016/j.jcis.2011.01.098.
Publisher:
Elsevier BV
Journal:
Journal of Colloid and Interface Science
KAUST Grant Number:
KUK-C1-017-12
Issue Date:
May-2011
DOI:
10.1016/j.jcis.2011.01.098
PubMed ID:
21345442
Type:
Article
ISSN:
0021-9797
Sponsors:
The research is funded by King Abdullah University of Science and Technology (KAUST) (www.kaust.edu.sa) Center-in-Development Award to Utrecht University (No. KUK-C1-017-12) through KAUST (www.kaust.edu.sa) Global Research Partnership program which resulted in formation of the Center for Soil, Water and Coastal Resources (SOWACOR) at Utrecht University: www.sowacor.nl.
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Full metadata record

DC FieldValue Language
dc.contributor.authorChubar, Nataliaen
dc.date.accessioned2016-02-25T13:50:22Zen
dc.date.available2016-02-25T13:50:22Zen
dc.date.issued2011-05en
dc.identifier.citationChubar N (2011) New inorganic (an)ion exchangers based on Mg–Al hydrous oxides: (Alkoxide-free) sol–gel synthesis and characterisation. Journal of Colloid and Interface Science 357: 198–209. Available: http://dx.doi.org/10.1016/j.jcis.2011.01.098.en
dc.identifier.issn0021-9797en
dc.identifier.pmid21345442en
dc.identifier.doi10.1016/j.jcis.2011.01.098en
dc.identifier.urihttp://hdl.handle.net/10754/598972en
dc.description.abstractNew inorganic ion exchangers based on double Mg-Al hydrous oxides were generated via the new non-traditional sol-gel synthesis method which avoids using metal alkoxides as raw materials. Surface chemical and adsorptive properties of the final products were controlled by several ways of hydrogels and xerogels treatments which produced the materials of the layered structure, mixed hydrous oxides or amorphous adsorbents. The final adsorptive materials obtained via thermal treatment of xerogels were the layered mesoporous materials with carbonate in the interlayer space, surface abundance with hydroxylic groups and maximum adsorptive capacity to arsenate. Higher affinity of Mg-Al hydrous oxides towards H2AsO4- is confirmed by steep adsorption isotherms having plateau (removal capacity) at 220. mg[As]. gdw-1 for the best sample at pH = 7, fast adsorption kinetics and little pH effect. Adsorption of arsenite, fluoride, bromate, bromide, selenate, borate by Mg-Al hydrous oxides was few times high either competitive (depending on the anion) as compare with the conventional inorganic ion exchange adsorbents. © 2011 Elsevier Inc.en
dc.description.sponsorshipThe research is funded by King Abdullah University of Science and Technology (KAUST) (www.kaust.edu.sa) Center-in-Development Award to Utrecht University (No. KUK-C1-017-12) through KAUST (www.kaust.edu.sa) Global Research Partnership program which resulted in formation of the Center for Soil, Water and Coastal Resources (SOWACOR) at Utrecht University: www.sowacor.nl.en
dc.publisherElsevier BVen
dc.subjectAlkoxide-free sol-gelen
dc.subjectArsenateen
dc.subjectArseniteen
dc.subjectBorateen
dc.subjectBromateen
dc.subjectBromideen
dc.subjectFluorideen
dc.subjectInorganic ion exchange adsorbentsen
dc.subjectMg-Al hydrous oxidesen
dc.subjectSelenateen
dc.titleNew inorganic (an)ion exchangers based on Mg–Al hydrous oxides: (Alkoxide-free) sol–gel synthesis and characterisationen
dc.typeArticleen
dc.identifier.journalJournal of Colloid and Interface Scienceen
dc.contributor.institutionUtrecht University, Utrecht, Netherlandsen
kaust.grant.numberKUK-C1-017-12en
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