Remediation of colloid-facilitated contaminant transport in saturated porous media treated by nanoparticles

D. Arab, P. Pourafshary, Sh Ayatollahi, A. Habibi

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Facilitation of contaminant transport in porous media due to the effect of indigenous colloidal fine materials has been widely observed in laboratory and field studies. It has been explained by the increase in the apparent solubility of low soluble contaminants as a result of their adsorption on the surface of fine particles. Attachment of colloidal fine particles onto the rock surface could be a promising remedy for this challenge. In this experimental study, the effect of five types of metal oxide nanoparticles, γ-Al2O3, ZnO, CuO, MgO, and SiO2, on suspension transport was investigated. In several core flooding tests, different nanofluids were used to saturate the synthetic porous media. Subsequently, after sufficient soaking time, the suspension was injected into the treated porous media. Analysis of the effluent samples' concentration by Turbidimeter apparatus demonstrated that the presence of nanoparticles on the rock surface resulted in a significant reduction in fine concentrations in the effluent samples compared with non-treated media; ZnO and γ-Al2O3 demonstrated the best scenarios among the tests performed in this study. In order to characterize the surface properties of the treated porous media, the zeta potential of the surface was measured. Results showed that the treated porous media acts as a strong adsorbent of fine particles, which are the main carrier of contaminants in porous media. These findings were quantitatively confirmed by calculation of the total energy of interaction between the fine particles and rock surface using the Derjaguin-Landau-Verwey-Overbeek theory.

Original languageEnglish
Pages (from-to)207-216
Number of pages10
JournalInternational Journal of Environmental Science and Technology
Volume11
Issue number1
DOIs
Publication statusPublished - 2014

Fingerprint

colloids
Colloids
nanoparticles
porous media
pollutant transport
remediation
colloid
Remediation
Nanoparticles
Porous materials
porous medium
Suspensions
Metal Nanoparticles
Impurities
Surface Properties
Solubility
Oxides
Adsorption
rocks
Rocks

Keywords

  • Fine particles migration
  • Groundwater
  • Nanotechnology
  • Porous media
  • Subsurface colloids
  • Zeta potential alteration

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Remediation of colloid-facilitated contaminant transport in saturated porous media treated by nanoparticles. / Arab, D.; Pourafshary, P.; Ayatollahi, Sh; Habibi, A.

In: International Journal of Environmental Science and Technology, Vol. 11, No. 1, 2014, p. 207-216.

Research output: Contribution to journalArticle

@article{b9eba32cba4d4228bfe0c823fea86039,
title = "Remediation of colloid-facilitated contaminant transport in saturated porous media treated by nanoparticles",
abstract = "Facilitation of contaminant transport in porous media due to the effect of indigenous colloidal fine materials has been widely observed in laboratory and field studies. It has been explained by the increase in the apparent solubility of low soluble contaminants as a result of their adsorption on the surface of fine particles. Attachment of colloidal fine particles onto the rock surface could be a promising remedy for this challenge. In this experimental study, the effect of five types of metal oxide nanoparticles, γ-Al2O3, ZnO, CuO, MgO, and SiO2, on suspension transport was investigated. In several core flooding tests, different nanofluids were used to saturate the synthetic porous media. Subsequently, after sufficient soaking time, the suspension was injected into the treated porous media. Analysis of the effluent samples' concentration by Turbidimeter apparatus demonstrated that the presence of nanoparticles on the rock surface resulted in a significant reduction in fine concentrations in the effluent samples compared with non-treated media; ZnO and γ-Al2O3 demonstrated the best scenarios among the tests performed in this study. In order to characterize the surface properties of the treated porous media, the zeta potential of the surface was measured. Results showed that the treated porous media acts as a strong adsorbent of fine particles, which are the main carrier of contaminants in porous media. These findings were quantitatively confirmed by calculation of the total energy of interaction between the fine particles and rock surface using the Derjaguin-Landau-Verwey-Overbeek theory.",
keywords = "Fine particles migration, Groundwater, Nanotechnology, Porous media, Subsurface colloids, Zeta potential alteration",
author = "D. Arab and P. Pourafshary and Sh Ayatollahi and A. Habibi",
year = "2014",
doi = "10.1007/s13762-013-0311-3",
language = "English",
volume = "11",
pages = "207--216",
journal = "International Journal of Environmental Science and Technology",
issn = "1735-1472",
publisher = "CEERS",
number = "1",

}

TY - JOUR

T1 - Remediation of colloid-facilitated contaminant transport in saturated porous media treated by nanoparticles

AU - Arab, D.

AU - Pourafshary, P.

AU - Ayatollahi, Sh

AU - Habibi, A.

PY - 2014

Y1 - 2014

N2 - Facilitation of contaminant transport in porous media due to the effect of indigenous colloidal fine materials has been widely observed in laboratory and field studies. It has been explained by the increase in the apparent solubility of low soluble contaminants as a result of their adsorption on the surface of fine particles. Attachment of colloidal fine particles onto the rock surface could be a promising remedy for this challenge. In this experimental study, the effect of five types of metal oxide nanoparticles, γ-Al2O3, ZnO, CuO, MgO, and SiO2, on suspension transport was investigated. In several core flooding tests, different nanofluids were used to saturate the synthetic porous media. Subsequently, after sufficient soaking time, the suspension was injected into the treated porous media. Analysis of the effluent samples' concentration by Turbidimeter apparatus demonstrated that the presence of nanoparticles on the rock surface resulted in a significant reduction in fine concentrations in the effluent samples compared with non-treated media; ZnO and γ-Al2O3 demonstrated the best scenarios among the tests performed in this study. In order to characterize the surface properties of the treated porous media, the zeta potential of the surface was measured. Results showed that the treated porous media acts as a strong adsorbent of fine particles, which are the main carrier of contaminants in porous media. These findings were quantitatively confirmed by calculation of the total energy of interaction between the fine particles and rock surface using the Derjaguin-Landau-Verwey-Overbeek theory.

AB - Facilitation of contaminant transport in porous media due to the effect of indigenous colloidal fine materials has been widely observed in laboratory and field studies. It has been explained by the increase in the apparent solubility of low soluble contaminants as a result of their adsorption on the surface of fine particles. Attachment of colloidal fine particles onto the rock surface could be a promising remedy for this challenge. In this experimental study, the effect of five types of metal oxide nanoparticles, γ-Al2O3, ZnO, CuO, MgO, and SiO2, on suspension transport was investigated. In several core flooding tests, different nanofluids were used to saturate the synthetic porous media. Subsequently, after sufficient soaking time, the suspension was injected into the treated porous media. Analysis of the effluent samples' concentration by Turbidimeter apparatus demonstrated that the presence of nanoparticles on the rock surface resulted in a significant reduction in fine concentrations in the effluent samples compared with non-treated media; ZnO and γ-Al2O3 demonstrated the best scenarios among the tests performed in this study. In order to characterize the surface properties of the treated porous media, the zeta potential of the surface was measured. Results showed that the treated porous media acts as a strong adsorbent of fine particles, which are the main carrier of contaminants in porous media. These findings were quantitatively confirmed by calculation of the total energy of interaction between the fine particles and rock surface using the Derjaguin-Landau-Verwey-Overbeek theory.

KW - Fine particles migration

KW - Groundwater

KW - Nanotechnology

KW - Porous media

KW - Subsurface colloids

KW - Zeta potential alteration

UR - http://www.scopus.com/inward/record.url?scp=84893546985&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893546985&partnerID=8YFLogxK

U2 - 10.1007/s13762-013-0311-3

DO - 10.1007/s13762-013-0311-3

M3 - Article

VL - 11

SP - 207

EP - 216

JO - International Journal of Environmental Science and Technology

JF - International Journal of Environmental Science and Technology

SN - 1735-1472

IS - 1

ER -