Synergism effect of mixed surfactant solutions in remediation of soil contaminated with PCE

Lee, Dal-Heui; Chang, Ho‐Wan; Cody, Robert D.

doi:10.1007/bf02910251

Cited by 30 publications

(23 citation statements)

References 11 publications

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“…Medias up to pore volume of 20 were washed by anionic surfactant, JBR425 and contaminant removal was 67% for this content of surfactant (Mulligan and Eftekhari, 2003). PCE removal efficiency in a sandy soil, with 15cm height, 5cm diameter and with 750 mL of surfactant solvent, was 44, 42 and 75% for anionic, no anionic and mixture of surfactant, respectively (Lee et al, 2004). Using surfactant for soil washing has been performed for several years, but because of problems such as soil blockage, reduction of permeability and hydraulic conductivity more investigations are needed yet.…”

Section: Introductionmentioning

confidence: 96%

“…Remediation of soils contaminated with oil products with less content of pollution and larger particle sizes, in same conditions, gives more removal efficiency than soils with higher pollution and smaller particle sizes (Urum et al, 2004). Soils contaminated with oil products had the efficiency of 90-98% in ex-situ remediation using enhanced washing compounds (Lee et al, 2004). There is not enough information about full scale projects of in-situ soil remediation, but the principles are that after obtaining above information, some wells are used to pass the surfactants and according to soil permeability, gravity force or pumping is used to pass the surfactant through the soil.…”

Section: Introductionmentioning

confidence: 98%

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Remediation of Diesel Contaminated Soils Using Surfactants: Coulumn Study

Hirotoshi¹

2012

American Journal of Environmental Sciences

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This study presents the experimental remediation studies of diesel contaminated soil with Sodium Deducible Sulfate (SDS) as surfactants using column tests. Sandy selected soil had the grain size distribution of # 40 meshes to the # 200 mesh range. The soil columns were contaminated with adequate diesel amount to achieve the concentration of 10000 and 20000 ppm in soil. 0.1, 0.2, 0.3, 0.4 percent of surfactants and pH values of 4, 7, 9 and 11, were examined. After 72 h, washing began and all tests were continued up to 10 pore volume and the trend of remediation and permeability of soil during the test was investigated. pH and TPH of outlet solution measured during 2, 4, 6 and 10 pore volumes. Times were recorded during 0.67, 1, 1.33, 2, 3.33, 4, 5.67, 6, 7.33, 8, 8.67, 9.33 and 10 pore volumes, in order to calculate permeability values.Results showed that in all states the quantity of remediation for acidic states was very low and efficiency of remediation when using only water was about (1:3) of maximum amount. For soil with initial contaminant concentration of 10000 ppm the maximum efficiency is for surfactant in the concentration of 0.3 and pH = 11 and for soil with initial contamination amount of 20000 ppm the maximum efficiency is for surfactant in the concentration of 0.1 and pH = 11. By increasing the amount of surfactant concentration, the permeability of soil decreased and in pH = 11 the amount of permeability is maximum. With increasing initial contamination quantity rate of increasing of remediation and permeability decreased. Consequently in the low level of contamination the effect of washing solution pH value in soil remediation and permeability is more in comparing with high level of contamination. For initial contamination of 10000 ppm optimum removal efficiency obtained 35% for surfactant of 0.3% and pH = 11. For initial contamination of 20000 ppm, optimum removal efficiency is obtained as 45% for 0.1% of surfactant and pH = 11. Using of higher soil column, sampling from different elevation for investigating remediation trend in height and surveying temperature effect on diesel contaminated soil remediation can help to modification procedure and improvement of efficiency.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 98%

Remediation of Diesel Contaminated Soils Using Surfactants: Coulumn Study

Hirotoshi¹

2012

American Journal of Environmental Sciences

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“…Field-scale tests, however, showed that some surfactants can only remove 50-60% of the contaminants in typical DNAPL source zones [4]. Among the most commonly used surfactants for soil and groundwater remediation, polyoxyethylene sorbitan monooleate (Tween 80) is regarded as a promising remediation agent for chlorinated solvents because it is not only effective, but also biodegradable under aerobic and anaerobic conditions [16][17][18]. Laboratory tests of Tween 80 flushing showed that it can potentially recover more than 70% PCE [19].…”

Section: Introductionmentioning

confidence: 99%

Removal of tetrachloroethylene from homogeneous and heterogeneous porous media: Combined effects of surfactant solubilization and oxidant degradation

Zheng

Gao

Sun

et al. 2016

Chemical Engineering Journal

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“…However, the in-situ remediation process should been applied if the excavation of the contaminated site is impossible. Recently, the pilot scale feasibility test for the in-situ soil flushing with surfactant solution for fuel oil contaminated sites in Korea has been successfully conducted (Lee et al, 2004;Kim, 2010;Lee et al, 2011;Lee et al, 2012). Results showed that the soil flushing has a short recovery time in comparison with the conventional pump and treat process and it does not destroy the ground structure such as a storage facility, rail road and the gas pipe arrangement around the site (Kim and Lee, 1999;Lee et al, 2002).…”

Section: *Corresponding Author : Heelee@pknuackrmentioning

confidence: 99%

Pilot Scale Feasibility Test of In-situ Soil Flushing by using 'Tween 80' Solution at Low Concentration for the Xylene Contaminated Site

Um¹,

Lee²,

Song³

et al. 2013

Journal of Soil and Groundwater Environment

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This study was performed to identify the optimal operating conditions and to evaluate the xylene removal efficiency, applying in-situ soil flushing with the low concentrated solution of 'Tween 80' at the xylene contaminated site. The pilot scale test site (5 m × 5 m × 3 m), was mainly composed of 'sandy loam', with the average hydraulic conductivity of 9.1 × 10 −4 cm s. The average xylene concentration of the site was 42.1 mg kg, which was more than 2.5 times higher than Korea soil pollution warning limit (15 mg kg). For the soil flushing, 7,800 L of 0.1~0.2% surfactant solution was injected into three injection wells at the average injection time of 9 hr d −1 for 10 days, followed by the additional only groundwater injection of 6,000 L. The same amount of the effluent solution was extracted from three extraction wells. From the analysis for xylene concentration of all effluent at 3 extraction wells, total 166 g of xylene was removed by insitu surfactant flushing. Even though the residual xylene concentrations of 7 soil sampling locations in the test site were different due to the soil heterogeneity, from the comparison of xylene concentration at 7 locations before/after the feasibility test, 53.9% of the initial xylene in the site was removed from three extraction wells (mainly Ext-N and Ext-M well). The results showed that the in-situ soil flushing by using low concentrated 'Tween 80' solution had a great potential to remediate the xylene contaminated site.

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Synergism effect of mixed surfactant solutions in remediation of soil contaminated with PCE

Cited by 30 publications

References 11 publications

Remediation of Diesel Contaminated Soils Using Surfactants: Coulumn Study

Remediation of Diesel Contaminated Soils Using Surfactants: Coulumn Study

Removal of tetrachloroethylene from homogeneous and heterogeneous porous media: Combined effects of surfactant solubilization and oxidant degradation

Pilot Scale Feasibility Test of In-situ Soil Flushing by using 'Tween 80' Solution at Low Concentration for the Xylene Contaminated Site

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