Intermediate-Scale Investigation of Enhanced-Solubilization Agents on the Dissolution and Removal of a Multicomponent Dense Nonaqueous Phase Liquid (DNAPL) Source

Optimization of process parameters for remediation performance on mass removal of tetrachloroethylene source zones by using Taguchi design of experiment and artificial neural network

“…However, because of the high density, low solubility and high interfacial tension of DNAPL with water ( γ ow ), PT is not effective for DNAPL mass removal. In situ enhanced solubilization method is a remediation technique that is based on the use of flushing agents (e.g., surfactants, cosolvents and cyclodextrins) that decreases interfacial tension between DNAPL and water and increases the apparent solubility of organic contaminants (Akyol et al, 2013; Difilippo et al, 2010; Tick et al, 2015). Thus, the use of enhance flushing can help to increase the efficiency of the PT and decrease the amount of time needed to completely flush DNAPLs from the porous media (Akyol, 2018; Akyol et al, 2013; Akyol & Turkkan, 2018; Difilippo et al, 2010; Karaoglu et al, 2019; McCray et al, 2000; McCray & Brusseau, 1999; Mohammed et al, 2019; Tick et al, 2003, 2015; Tick & Rincon, 2009).…”

Mass-flux Reduction and Mass Removal Relationships (MFR-MR) of Pool-dominated Multicomponent DNAPLs in Heterogeneous Geological System

“…The GC was programmed to increase the oven temperature from an initial value of 40 ℃ for a 5-minute holding period to a final temperature of 220 ℃ at a rate of 8 ℃ per minute (split ratio 1:10). Difilippo et al, 2010;Tick et al, 2015;Akyol and Turkkan, 2018…”

“…In-situ chemical flushing (ISCF) has evolved as an effective technology for the enhanced removal of DNAPLs from the subsurface. ISCF typically involve the injection of cosolvents or surfactant solutions (the focus of the current study) to speed up the recovery of the DNAPL from the subsurface (McCray and Brusseau, 1999;Boving and Brusseau, 2000;Tick et al, 2003;Tick and Rincon, 2009;Carroll and Brusseau, 2009;DiFilippo et al, 2010;Harvell, 2012;Tick et al, 2015;Aydin-Sarikurt et al, 2016;Akyol and Turkkan, 2018;Akyol, 2018;Mohammed et al, 2019, Alazaiza et al, 2022. There are two general mechanisms by which surfactants can enhance the removal of DNAPLs from aquifers: (i) enhanced solubilization, (ii) mobilization.…”

“…Previous research using enhanced-solubilization agents has primarily focused on the mobilization and solubilization of single-component NAPL with significantly less studies investigating the compositional impacts for the removal of multicomponent NAPL (e.g., Abdul et al, 1990;Edwards et al, 1991;McCray and Brusseau 1998;McCray and Brusseau, 1999;Knox et al, 1999;Khachikian and Harmon, 2000;McCray and Dugan, 2002;Oostrom et al, 2006;Carroll and Brusseau, 2009;McCray et al 2011;Akgoze Aydin et al, 2011, Agaoglu et al, 2012Burke, 2012;Tick et al, 2015;Padgett et al, 2017;Mateas et al, 2017). Similarly, while there has been extensive research solely devoted to examining mass-flux-reduction/massremoval behavior for single-component NAPL systems (e.g., Boving and Brusseau, 2000;Stroo et al, 2003;Brooks et al, 2004;Lemke et al, 2004;NRC, 2004;Parker and Park, 2004;Phelan et al, 2004;Soga et al, 2004;Falta et al, 2005;Jawitz et al, 2005;Fure et al, 2006;Brusseau et al, 2007Brusseau et al, , 2008Basu et al, 2008;DiFilippo and Brusseau, 2008;Marble et al, 2008;Tick and Rincon, 2009;Brusseau et al, 2013;Tick et al, 2015;Akyol and Turkkan, 2018), there have been relatively few studies investigating these relationsh...…”

“…The objective of this research is to evaluate the effect of enhanced-solubilization agents (surfactants) on remediation of pool-dominated multicomponent DNAPL (comprising of TCE, PCE, 1,1DCE) distributed within two different heterogeneous geological systems. These compounds were selected because they are widely used in industrial applications and have been often encountered at sites contaminated with DNAPLs (Pankow, 1995;Stroo et al, 2003;NRC, 2004;Tick et al, 2015;Aydin-Sarikurt et al, 2016). The paper will compare the relative behavior of different solubilization agents through a series of batch and 2-D tank experiments.…”