PMID: 11916122Mar 28, 2002Paper

Back diffusion of chlorinated solvent contaminants from a natural aquitard to a remediated aquifer under well-controlled field conditions: predictions and measurements

Ground Water
Chongxuan Liu, William P Ball

Abstract

Vertical profiles of tetrachloroethene (or perchloroethylene, PCE) and trichloroethene (TCE) were used to validate a diffusion process in a natural aquitard at Dover Air Force Base, Delaware. PCE and TCE distributions in the aquitard underlying an unconfined aquifer were sampled from core tubes obtained at four times over the course of a 35-month field investigation within "test cells" that were isolated from the surrounding ground water by means of grout-sealed steel sheetpile barriers (Mackay et al. 2000). For the final 23 months of this period, boundary conditions at the aquifer/aquitard interface were such that a "back diffusion" of contaminants from the aquitard was induced. Modeling predictions of concentration changes were made on the basis of the earliest coring results and an assumption of sorption-retarded diffusion and using laboratory information about sorption and diffusion characteristics of the media. The predictive modeling was complicated by the fact that "initial" and "final" PCE and TCE distributions in the aquitard were measured at different (albeit proximate) coring locations, such that results reflect spatial variations in aquitard characteristics. This problem was solved by means of an inverse interpretat...Continue Reading

Citations

Mar 25, 2014·Journal of Contaminant Hydrology·Minjune YangJames W Jawitz
Apr 11, 2014·Environmental Science & Technology·Lisa M CliftonPaul C Johnson
Apr 25, 2012·Journal of Contaminant Hydrology·Indra KalinovichKathryn Thomas
Mar 9, 2011·Journal of Contaminant Hydrology·Andrea E Carlson, David L Barnes
May 30, 2009·Journal of Contaminant Hydrology·Hongbin ZhanDongmin Sun
Sep 13, 2015·The Science of the Total Environment·Sen YanSarah Fansler
Sep 8, 2010·Environmental Toxicology and Chemistry·Rajveer Singh, Mira Stone Olson
Dec 22, 2014·Journal of Contaminant Hydrology·Negin KananizadehSteven Comfort
Dec 6, 2014·Environmental Science & Technology·Minjune YangJames W Jawitz
Apr 21, 2016·The Science of the Total Environment·David T AdamsonCharles J Newell
Apr 29, 2014·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Adam Tressler, Christopher Uchrin
Feb 28, 2019·Ground Water·Haley A SchneiderUriel Garza-Rubalcava
Aug 23, 2019·Environmental Earth Sciences·Mark L BrusseauJon Mainhagu
May 19, 2020·Environmental Geochemistry and Health·Vijay Laxmi Mohanta, Brijesh Kumar Mishra
Feb 8, 2021·Journal of Contaminant Hydrology·Somayeh G EsfahaniCharles J Werth
Feb 1, 2021·Journal of Contaminant Hydrology·Muhammad Muniruzzaman, Massimo Rolle
May 16, 2018·The Science of the Total Environment·Philipp WannerDaniel Hunkeler
Mar 20, 2021·Environmental Science and Pollution Research International·Xu LiQi Zhu
Dec 11, 2019·Journal of Contaminant Hydrology·Derya Ayral-Çınar, Avery H Demond
Nov 8, 2018·Journal of Contaminant Hydrology·Noelia Muskus, Ronald W Falta
Jan 22, 2017·Journal of Contaminant Hydrology·Ronald W Falta, Wenwen Wang
Jan 1, 2020·Ground Water Monitoring & Remediation·Michael C BrooksJunqi Huang

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