PMID- 21262552 OWN - NLM STAT- MEDLINE DCOM- 20110616 LR - 20211020 IS - 1873-6009 (Electronic) IS - 0169-7722 (Print) IS - 0169-7722 (Linking) VI - 123 IP - 3-4 DP - 2011 Apr 25 TI - Assessment of a simple function to evaluate the relationship between mass flux reduction and mass removal for organic-liquid contaminated source zones. PG - 104-13 LID - 10.1016/j.jconhyd.2010.12.011 [doi] AB - The efficacy of a simple mass-removal function for characterizing mass-flux-reduction/mass-removal behavior for organic-liquid contaminated source zones was evaluated using the data obtained from a series of flow-cell experiments. The standard function, which employs a constant exponent, could not adequately reproduce the non-singular (multi-step) behavior exhibited by the measured data. Allowing the exponent to change as a function of mass removal (as the organic-liquid distribution and relative permeability change) produced non-singular relationships similar to those exhibited by the measured data. Four methods were developed to dynamically inform the exponent through use of measurable system-indicator parameters. Key factors that mediate the magnitude of mass flux (dilution and source accessibility) were accounted for using measures of source zone cross-sectional area, ganglia-to-pool (GTP) ratio, and relative permeability. The two methods that incorporated only the ganglia-to-pool ratio produced adequate simulations of the observed behavior for early stages of mass removal, but not for later stages. The method that incorporated parameters accounting for the source zone cross-sectional area (i.e., measure of system dilution) and source accessibility (GTP ratio and relative permeability) provided the most representative simulations of the observed data. CI - Copyright (c) 2010 Elsevier B.V. All rights reserved. FAU - DiFilippo, Erica L AU - DiFilippo EL AD - Hydrology and Water Resources, School of Earth and Environmental Sciences, University of Arizona, 429 Shantz Building, Tucson, AZ 85721, USA. FAU - Brusseau, Mark L AU - Brusseau ML LA - eng GR - P42 ES004940-17/ES/NIEHS NIH HHS/United States GR - P42 ES004940-20/ES/NIEHS NIH HHS/United States GR - P42 ES004940-22/ES/NIEHS NIH HHS/United States GR - ES04940/ES/NIEHS NIH HHS/United States GR - P42 ES004940-21/ES/NIEHS NIH HHS/United States GR - P42 ES004940-19/ES/NIEHS NIH HHS/United States GR - P42 ES004940-15/ES/NIEHS NIH HHS/United States GR - P42 ES004940/ES/NIEHS NIH HHS/United States GR - P42 ES004940-16/ES/NIEHS NIH HHS/United States GR - P42 ES004940-14/ES/NIEHS NIH HHS/United States GR - P42 ES004940-18/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20110101 PL - Netherlands TA - J Contam Hydrol JT - Journal of contaminant hydrology JID - 8805644 RN - 0 (Water Pollutants, Chemical) SB - IM MH - *Environmental Restoration and Remediation MH - Permeability MH - Water Movements MH - Water Pollutants, Chemical/*analysis/isolation & purification MH - Water Pollution, Chemical/*analysis/prevention & control PMC - PMC3061350 MID - NIHMS267275 EDAT- 2011/01/26 06:00 MHDA- 2011/06/17 06:00 PMCR- 2012/04/25 CRDT- 2011/01/26 06:00 PHST- 2009/09/08 00:00 [received] PHST- 2010/12/16 00:00 [revised] PHST- 2010/12/23 00:00 [accepted] PHST- 2011/01/26 06:00 [entrez] PHST- 2011/01/26 06:00 [pubmed] PHST- 2011/06/17 06:00 [medline] PHST- 2012/04/25 00:00 [pmc-release] AID - S0169-7722(10)00174-9 [pii] AID - 10.1016/j.jconhyd.2010.12.011 [doi] PST - ppublish SO - J Contam Hydrol. 2011 Apr 25;123(3-4):104-13. doi: 10.1016/j.jconhyd.2010.12.011. Epub 2011 Jan 1.