Preparation, characterization of surfactants modified clay minerals and nitrate adsorption

Xi, Yunfei, Mallavarapu, Megharaj, & Naidu, Ravendra (2010) Preparation, characterization of surfactants modified clay minerals and nitrate adsorption. Applied Clay Science, 48(1-2), pp. 92-96.

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Abstract

Organic surfactants modified clay minerals are usually used as adsorbents for hydrophobic organic contaminants remediation; this work however has shown organoclays can also work as adsorbents for hydrophilic anionic contaminant immobilization. Organoclays were prepared based on halloysite, kaolinite and bentonite and used for nitrate adsorption, which are significant for providing mechanism for the adsorption of anionic contaminants from waste water. XRD was used to characterize unmodified and surfactants modified clay minerals. Thermogravimetric analysis (TG) was used to determine the thermal stability and actual loading of surfactant molecules. Ion chromatography (IC) was used to determine changes of nitrate concentration before and after adsorption by these organoclays. These organoclays showed different removal capacities for anionic ions from water and adsorption mechanism was investigated.

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ID Code: 75081
Item Type: Journal Article
Refereed: Yes
Keywords: anion, adsorption, organoclay
DOI: 10.1016/j.clay.2009.11.047
ISSN: 0169-1317
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000)
Australian and New Zealand Standard Research Classification > ENVIRONMENTAL SCIENCES (050000)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2010 Elsevier
Copyright Statement: This is the author’s version of a work that was accepted for publication in Applied Clay Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Applied Clay Science, [VOL 48, ISSUE 1-2, (DATE)] DOI: 10.1016/j.clay.2009.11.047
Deposited On: 18 Aug 2014 00:22
Last Modified: 19 Aug 2014 14:01

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