Adsorption of Arsenate and Arsenite on Titanium Dioxide Suspensions

Dutta, Paritam K., Ray, Ajay K., Sharma, Virender K. and Millero, Frank J. (2004) Adsorption of Arsenate and Arsenite on Titanium Dioxide Suspensions. Journal of Colloid and Interface Science, 278 2: 270-275.


Author Dutta, Paritam K.
Ray, Ajay K.
Sharma, Virender K.
Millero, Frank J.
Title Adsorption of Arsenate and Arsenite on Titanium Dioxide Suspensions
Journal name Journal of Colloid and Interface Science  (ERA 2012 Listed)    (ERA 2010 Rank A)   Check publisher's open access policy
Publication date 2004-10-15
Sub-type Article
DOI 10.1016/j.jcis.2004.06.015
Volume number 278
Issue number 2
ISSN 0021-9797
Start page 270
End page 275
Total pages 6
Editor D. T. Wasan
Place of publication New York
Publisher Academic Press
Language eng
Subject 039901 Environmental Chemistry (incl. Atmospheric Chemistry)
Abstract Adsorption of arsenate (As(V)) and arsenite (As(III)) to two commercially available titanium dioxide (TiO2) suspensions, Hombikat UV100 and Degussa P25, was investigated as a function of pH and initial concentration of adsorbate ions. The BET surface area and zeta potential values of TiO2 were also measured to understand the difference in adsorption behavior of two suspensions. Both As(V) and As(III) adsorb more onto Hombikat UV100 particles than Degussa P25 particles. Adsorption of As(V) onto TiO2 suspensions was more than As(III) at pH 4 while the adsorption capacity of As(III) was more at pH 9. The electrostatic factors between surface charge of TiO2 particles and arsenic species were used to explain adsorption behavior of As(V) and As(III) at different pH. The Langmuir and Freundlich isotherm equations were used to interpret the nature of adsorption of arsenic onto TiO2 suspensions. The usefulness of adsorption data in removing arsenic in water is briefly discussed.
Keyword Colloids
Arsenate
Arsenite
Titanium dioxide
Adsorption
Point of zero charge
Isotherms
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article
Collections: Excellence in Research Australia (ERA) - Collection
Advanced Water Management Centre Publications
 
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