Surfactant-Enhanced Solubilization of Tetrachloroethylene and Degradation Products in Pump and Treat Remediation

West, Candida C.

doi:10.1021/bk-1992-0491.ch012

Cited by 24 publications

(15 citation statements)

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“…These residual phases can slowly release hazardous compounds into valuable groundwater supplies over a period of many years. The use of surf act ants to expedite the remediation of such subsurface contaminants has been of considerable interest in recent research (Harwell, 1992;West, 1992;Edwards et al, 1992;Palmer el al., 1992;Fountain, 1992;Rouse el al.. 1993;Pennell el at .. 1993;Abriola el al., 1993;Shiau el at., 1994;Edwards el at., 1994).…”

mentioning

confidence: 99%

Evaluation of ethoxylated alkylsulfate surfactants for use in subsurface remediation

Rouse¹,

Sabatini²,

Brown³

et al. 1996

Water Environment Research

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Experiments were conducted to evaluate the potential of ether sulfate surfactants with degrees of ethoxylation ranging from one to four per molecule for use in subsurface remediation. It was hypothesized that ethoxylated anionic surfactants will exhibit lower losses in the subsurface due to precipitation and sorption as a function of increasing ethoxylation while maintaining high hydrocarbon solubilization potentials. Results demonstrated that no significant precipitation of surfactant and calcium occurred where the degree of ethoxylation was two or greater. Sorption assays demonstrated that these ethoxylated anionic surfactants were less prone to sorption on soil than nonethoxylated anionic and non ionic surfactants. Furthermore, enhancements in solubilization of naphthalene were evidenced with increasing degrees of ethoxylation, and micelle-water partition coefficients were comparable with those of other high-performance surfactants. Microbial degradation assays indicated that these ethoxylated anionic surfactants served readily as substrates, raising concerns relative to their use in subsurface aerobic systems. However, they could be compatible with a treatment train concluded with a biological unit process.

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confidence: 99%

Evaluation of ethoxylated alkylsulfate surfactants for use in subsurface remediation

Rouse¹,

Sabatini²,

Brown³

et al. 1996

Water Environment Research

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“…Many laboratory experiments have been conducted to examine the interactions among surfactant type, composition, and concentration and type and concentration of organic contaminants on enhanced solubility (Valsaraj and Thibodeaux 1989;Abdul et al 1990;Edwards et al 1991;West 1992;Rouse et al 1993;Jafvert et al 1994;Pennell et al 1997). Typically, this information is obtained in small-scale batch experiments (Edwards et al, 1991a).…”

Section: Research Objectivesmentioning

confidence: 99%

“…Typically, this information is obtained in small-scale batch experiments (Edwards et al, 1991a). Linear relationships between log K m and log K ow have been reported for a variety of anionic and nonionic surfactants and many chlorinated aliphatic compounds, polycyclic aromatic hydrocarbons, and chlorinated aromatic compounds (Edwards et al, 1991a;Jafvert et al, 1994;Valsaraj and Thibodeaux, 1989;West, 1992). Based on a field investigation of the ability of a diphenyl oxide disulfonate surfactant (DOWFAX 8390) to enhance the solubility of residual tetrachloroethene, Knox et al (1997) concluded that laboratory solubilization experiments should be designed to replicate in-situ field conditions as closely as possible in order to provide usable results.…”

Section: Research Objectivesmentioning

confidence: 99%

In Situ, Field Scale Evaluation of Surfactant Enhanced DNAPL Recovery Using a Single-Well, Push-Pull Test

Istok

Field²

1999

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“…Studies of organic contaminants have shown that both biological (16)(17)(18) and synthetic (19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29) surfactants can enhance either the chemical removal or the biodegradative removal of organic contaminants from soil. While these studies indicate the potential for use of surfactants to facilitate the removal of metals from soil, the literature contains very little actual information concerning surfactant removal of metal contaminants.…”

Section: Biosurfactants In Remediationmentioning

confidence: 99%

Biosurfactant-Facilitated Remediation of Metal-Contaminated Soils

Miller¹

1995

Environmental Health Perspectives

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Bioremediation of metal-contaminated wastestreams has been successfully demonstrated. Normally, whole cells or microbial exopolymers are used to concentrate and/or precipitate metals in the wastestream to aid in metal removal. Analogous remediation of metal-contaminated soils is more complex because microbial cells or large exopolymers do not move freely through the soil. The use of microbially produced surfactants (biosurfactants) is an alternative with potential for remediation of metal-contaminated soils. The distinct advantage of biosurfactants over whole cells or exopolymers is their small size, generally biosurfactant molecular weights are less than 1500. A second advantage is that biosurfactants have a wide variety of chemical structures that may show different metal selectivities and thus, metal removal efficiencies. A review of the literature shows that complexation capacities of several bacterial exopolymers was similar to the complexation capacity of a rhamnolipid biosurfactant produced by Pseudomonas aeruginosa ATCC 9027. -Environ Health Perspect 1 03(Suppl 1): 59-62 (1995)

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Surfactant-Enhanced Solubilization of Tetrachloroethylene and Degradation Products in Pump and Treat Remediation

Cited by 24 publications

References 0 publications

Evaluation of ethoxylated alkylsulfate surfactants for use in subsurface remediation

Evaluation of ethoxylated alkylsulfate surfactants for use in subsurface remediation

In Situ, Field Scale Evaluation of Surfactant Enhanced DNAPL Recovery Using a Single-Well, Push-Pull Test

Biosurfactant-Facilitated Remediation of Metal-Contaminated Soils

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