Transport and retention of nanoscale C60 aggregates in water-saturated porous media

Yonggang Wang, Yusong Li, John D. Fortner, Joseph B. Hughes, Linda M. Abriola, Kurt D. Pennell

Research output: Contribution to journalArticle

154 Citations (Scopus)

Abstract

Experimental and mathematical modeling studies were performed to investigate the transport and retention of nanoscale fullerene aggregates (nC60) in water-saturated porous media. Aqueous suspensions of nC60 aggregates (95 nm diameter, 1 to 3 mg/L) were introduced into columns packed with either glass beads or Ottawa sand at a Darcy velocity of 2.8 m/d. In the presence of 1.0 mM CaCl2, nC60 effluent breakthrough curves (BTCs) gradually increased to a maximum value and then declined sharply upon reintroduction of nC60-free solution. Retention of nC60 in glass bead columns ranged from 8 to 49% of the introduced mass, while up to 77% of the mass was retained in Ottawa sand columns. When nC60 suspensions were prepared in deionized water alone, effluent nC60 BTCs coincided with those of a nonreactive tracer (Br -), with minimal nC60 retention. Observed differences in nC60 transport and retention behavior in glass beads and Ottawa sand were consistent with independent batch retention data and theoretical calculations of electrostatic interactions between nC60 and the solid surfaces. Effluent concentration and retention profile data were accurately simulated using a numerical model that accounted for nC60 attachment kinetics and a limiting retention capacity.

Original languageEnglish (US)
Pages (from-to)3588-3594
Number of pages7
JournalEnvironmental Science and Technology
Volume42
Issue number10
DOIs
StatePublished - May 15 2008

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Porous materials
porous medium
Effluents
Sand
Glass
Water
Suspensions
Fullerenes
Deionized water
Coulomb interactions
glass
water
breakthrough curve
effluent
Numerical models
sand
Kinetics
fullerene
reintroduction
tracer

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Transport and retention of nanoscale C60 aggregates in water-saturated porous media. / Wang, Yonggang; Li, Yusong; Fortner, John D.; Hughes, Joseph B.; Abriola, Linda M.; Pennell, Kurt D.

In: Environmental Science and Technology, Vol. 42, No. 10, 15.05.2008, p. 3588-3594.

Research output: Contribution to journalArticle

Wang, Yonggang ; Li, Yusong ; Fortner, John D. ; Hughes, Joseph B. ; Abriola, Linda M. ; Pennell, Kurt D. / Transport and retention of nanoscale C60 aggregates in water-saturated porous media. In: Environmental Science and Technology. 2008 ; Vol. 42, No. 10. pp. 3588-3594.
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