Stochastic modeling of in situ bioremediation in heterogeneous aquifers
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Cited by (31)
Prediction of pollutant remediation in a heterogeneous aquifer in Israel: Reducing uncertainty by incorporating lithological, head and concentration data
2018, Journal of HydrologyCitation Excerpt :Works that predicted remediation have assumed the plume shape is given and neglected its associated uncertainty upon remediation. Both Schäfer and Kinzelbach (1992) and Guo and Brusseau (2017) have assumed constant spatial concentration of the pollutant; Moreno and Paster (2017) have assumed a Gaussian shaped plume; Zheng and Wang (2002) have used spatial interpolation based on field samples; and, although Maxwell et al. (2008) and Rivett et al. (2006) have applied forward modeling to reproduce the initial plume shape, they used it either for a hypothetical case (Maxwell et al., 2008) or assuming a homogenous aquifer (Rivett et al., 2006). The aim of this study is to estimate the remediation efficiency (RE) in this site and to quantify its uncertainty.
The impact of well-field configuration and permeability heterogeneity on contaminant mass removal and plume persistence
2017, Journal of Hazardous MaterialsCitation Excerpt :However, research conducted at sites for which the source zone has been remediated or contained demonstrates that the contaminant plumes have continued to persist [e.g.,1–8], indicating that additional factors contribute to persistence. The factors beyond uncontrolled source zones that contribute to plume persistence include dispersed reservoirs of dissolved and sorbed contaminant present in lower-permeability zones [e.g.,9–16] and hydraulic-related factors such as non-optimal remedial well-field performance [e.g.,9,17–20]. As noted above, well-field hydraulics is another factor that can influence plume persistence.
Integrating NZVI and carbon substrates in a non-pumping reactive wells array for the remediation of a nitrate contaminated aquifer
2015, Journal of Contaminant HydrologyCitation Excerpt :However, in many contaminated aquifers the activity of nitrate-reducing bacteria is limited, and has to be enhanced and supported by several engineered interventions. Enhancing bacterial action as the only denitrification mechanism usually requires the injection of dissolved chemical substances (e.g., electron acceptor, electron donor, nutrients) (Schafer and Kinzelbach, 1992). As an alternative, since the 1990s, one of the most successful approaches is the realization of permeable reactive barriers (PRBs) of carbon substrates, in different configurations (continuous trenches, funnel-and-gate or reactive vessel) (Day et al., 1999; Tratnyek et al., 2003; Obiri-Nyarko et al., 2014).
Modelling of an enhanced PAH attenuation experiment and associated biogeochemical changes at a former gasworks site in southern Germany
2011, Journal of Contaminant HydrologyCitation Excerpt :An approach taking several factors into account was demonstrated by Henderson et al. (2009b) who considered partial source removal and plume remediation and studied its effects on the presence of specific contaminants dissolving from a leaded gasoline plume. A different approach was taken by Schäfer and Kinzelbach (1992) who could show that switching the locations of active well injection of dissolved oxygen increases the robustness of the hypothetical remediation scheme. Kim and Choi (2002) modelled gaseous ozone transport in a soil column contaminated with PAHs to study the feasibility of an in situ application.
Kinetics of soil ozonation: An experimental and numerical investigation
2004, Journal of Contaminant HydrologyComparison of fully coupled approaches for approximating nonlinear transport and reaction problems
2003, Advances in Water Resources