PMID: 12785531Jun 6, 2003Paper

Modeling colloid attachment, straining, and exclusion in saturated porous media

Environmental Science & Technology
Scott A BradfordScott R Yates

Abstract

A conceptual model for colloid transport is developed that accounts for colloid attachment straining, and exclusion. Colloid attachment and detachment is modeled using first-order rate expressions, whereas straining is described using an irreversible first-order straining term that is depth dependent. Exclusion is modeled by adjusting transport parameters for colloid-accessible pore space. Fitting attachment and detachment model parameters to colloid transport data provided a reasonable description of effluent concentration curves, but the spatial distribution of retained colloids at the column inlet was severely underestimated for systems that exhibited significant colloid mass removal. A more physically realistic description of the colloid transport data was obtained by simulating both colloid attachment and straining. Fitted straining coefficients were found to systematically increase with increasing colloid size and decreasing median grain size. A correlation was developed to predict the straining coefficient from colloid and porous medium information. Numerical experiments indicated that increasing the colloid excluded volume of the pore space resulted in earlier breakthrough and higher peak effluent concentrations as a re...Continue Reading

References

May 18, 2001·Environmental Science & Technology·J A RedmanM K Estes

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Citations

May 21, 2009·Environmental Science and Pollution Research International·Jaime DíazMario Díaz
Sep 19, 2007·Environmental Science & Technology·David C Mays, James R Hunt
Oct 13, 2011·Environmental Science & Technology·Elijah J PetersenKai Loon Chen
Dec 24, 2011·Environmental Science & Technology·Peter S K KnappettAlexander van Geen
Apr 27, 2012·Environmental Science & Technology·Todd L RussellAlexandria B Boehm
Jun 12, 2012·Environmental Science & Technology·Lunliang ZhangMason B Tomson
Jul 18, 2012·Environmental Science & Technology·Lei WuYakov A Pachepsky
Dec 20, 2012·Environmental Science & Technology·Dengjun WangDongmei Zhou
Feb 27, 2013·Environmental Science & Technology·Guoping TangScott C Brooks
Mar 27, 2013·Environmental Science & Technology·Jacob D LanphereSharon L Walker
Apr 17, 2009·Environmental Science & Technology·Kurt H JacobsonJoel A Pedersen
Aug 4, 2006·Applied and Environmental Microbiology·Ekaterina ParamonovaBruce E Logan
May 17, 2013·Journal of Contaminant Hydrology·Feike J Leij, Scott A Bradford
May 16, 2013·Journal of Contaminant Hydrology·Haibo ZhangMira S Olson
Jan 7, 2014·Journal of Contaminant Hydrology·Christoph NeukumRafig Azzam
Jul 24, 2014·Environmental Engineering Science·Jacob D LanphereSharon L Walker
Feb 18, 2016·Journal of Hazardous Materials·Chang Min ParkYeomin Yoon
Feb 6, 2016·The Science of the Total Environment·D D ZhouJ C Crittenden
Jan 3, 2016·Water Research·Jiake Li, Allen P Davis
Nov 26, 2011·Journal of Contaminant Hydrology·Dila Aksoy ErsenkalNadim K Copty
May 10, 2011·Water Research·Einat MagalAlexander Yakirevich
Dec 28, 2010·Water Research·Alexis A Porubcan, Shangping Xu
Aug 27, 2010·Journal of Contaminant Hydrology·Lixia ChenTohren C G Kibbey
Apr 23, 2010·Water Research·Jaideep ChatterjeeSantosh Kumar Gupta
Apr 28, 2009·Chemosphere·Michael L ThompsonThomas Desutter
Apr 2, 2015·The Science of the Total Environment·Samuel K KumahorHans-Jörg Vogel
Nov 18, 2008·Journal of Contaminant Hydrology·John Maximilian KöhneJirka Simůnek
Dec 11, 2007·Journal of Contaminant Hydrology·Saeed TorkzabanSharon L Walker
May 1, 2007·Journal of Contaminant Hydrology·Jan Willem FoppenJack Schijven

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