New inorganic (an)ion exchangers based on Mg–Al hydrous oxides: (Alkoxide-free) sol–gel synthesis and characterisation
KAUST Grant NumberKUK-C1-017-12
Permanent link to this recordhttp://hdl.handle.net/10754/598972
MetadataShow full item record
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.
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.
SponsorsThe 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.
CollectionsPublications Acknowledging KAUST Support
- Evaluation of selective composite cryogel for bromate removal from drinking water.
- Authors: Hajizadeh S, Kirsebom H, Galaev IY, Mattiasson B
- Issue date: 2010 Jun
- Adsorption of fluoride, chloride, bromide, and bromate ions on a novel ion exchanger.
- Authors: Chubar NI, Samanidou VF, Kouts VS, Gallios GG, Kanibolotsky VA, Strelko VV, Zhuravlev IZ
- Issue date: 2005 Nov 1
- Influence of 300°C thermal conversion of Fe-Ce hydrous oxides prepared by hydrothermal precipitation on the adsorptive performance of five anions: Insights from EXAFS/XANES, XRD and FTIR (companion paper).
- Authors: Chubar N, Gerda V, Banerjee D
- Issue date: 2017 Apr 1
- Effect of Fe(II)/Ce(III) dosage ratio on the structure and anion adsorptive removal of hydrothermally precipitated composites: Insights from EXAFS/XANES, XRD and FTIR.
- Authors: Chubar N, Gerda V, Banerjee D, Yablokova G
- Issue date: 2017 Feb 1
- Adsorption of arsenite and selenite using an inorganic ion exchanger based on Fe-Mn hydrous oxide.
- Authors: Szlachta M, Gerda V, Chubar N
- Issue date: 2012 Jan 1