Abstract

The goal of this study was to develop an inexpensive and easy to fabricate titanium dioxide-based hybrid ion-exchange media (Ti-HIX) and assess its potential to remove arsenic and nitrate from water. Different Ti-HIX media were fabricated via in-situ formation of TiO2 nanoparticles within the pores of three different commercially IX resins; the Ti-HIX media were characterized; and the arsenic and nitrate removal potential of the most economically feasible Ti-HIX media was assessed in model water under batch pseudo-equilibrium conditions. The Ti-HIX media were characterized with content ranging between 11% and 21% TiO2 per media dry mass. The TiO 2 exhibited form of anatase nanoparticles. The Freundlich adsorption intensity parameters (1/n) for all the Ti-HIX media were < 1 implying favorable adsorption for arsenic. The estimated maximum adsorption capacity for arsenic expressed per mass of titanium ranged between 16.6 mgAs g-1 Ti, 24.9 mgAs g-1Ti, and 27.3 for different types of tested Ti-HIX media, and was several fold higher than similar reported values in the literature. Nitrate removal performance of the base ion-exchange resins used in synthesis of the Ti-HIX media was not adversely impacted by the synthesis process.

Original languageEnglish (US)
Title of host publicationACS Symposium Series
PublisherAmerican Chemical Society
Pages223-236
Number of pages14
Volume1123
ISBN (Print)9780841227545
DOIs
StatePublished - Mar 18 2013

Publication series

NameACS Symposium Series
Volume1123
ISSN (Print)00976156
ISSN (Electronic)19475918

Fingerprint

Arsenic
Nitrates
Titanium dioxide
Ion exchange
Adsorption
Nanoparticles
Ion Exchange Resins
Ion exchange resins
Water
Titanium
Resins
titanium dioxide

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Elton, J., Hristovski, K., & Westerhoff, P. (2013). Titanium dioxide-based hybrid ion-exchange media for simultaneous removal of arsenic and nitrate. In ACS Symposium Series (Vol. 1123, pp. 223-236). (ACS Symposium Series; Vol. 1123). American Chemical Society. https://doi.org/10.1021/bk-2013-1123.ch013

Titanium dioxide-based hybrid ion-exchange media for simultaneous removal of arsenic and nitrate. / Elton, Jennifer; Hristovski, Kiril; Westerhoff, Paul.

ACS Symposium Series. Vol. 1123 American Chemical Society, 2013. p. 223-236 (ACS Symposium Series; Vol. 1123).

Research output: Chapter in Book/Report/Conference proceedingChapter

Elton, J, Hristovski, K & Westerhoff, P 2013, Titanium dioxide-based hybrid ion-exchange media for simultaneous removal of arsenic and nitrate. in ACS Symposium Series. vol. 1123, ACS Symposium Series, vol. 1123, American Chemical Society, pp. 223-236. https://doi.org/10.1021/bk-2013-1123.ch013
Elton J, Hristovski K, Westerhoff P. Titanium dioxide-based hybrid ion-exchange media for simultaneous removal of arsenic and nitrate. In ACS Symposium Series. Vol. 1123. American Chemical Society. 2013. p. 223-236. (ACS Symposium Series). https://doi.org/10.1021/bk-2013-1123.ch013
Elton, Jennifer ; Hristovski, Kiril ; Westerhoff, Paul. / Titanium dioxide-based hybrid ion-exchange media for simultaneous removal of arsenic and nitrate. ACS Symposium Series. Vol. 1123 American Chemical Society, 2013. pp. 223-236 (ACS Symposium Series).
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