Soil Clean-Up by Surfactant Washing. II. Design and Evaluation of the Components of the Pilot-Scale Surfactant Recycle System

Clarke, Ann N.; Oma, K.H.; Megehee, M. Maria; Wilson, David J.

doi:10.1080/01496399308016738

Cited by 24 publications

(17 citation statements)

References 1 publication

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“…We have found that sodium dodecyl sulphate posses greater petroleum hydrocarbon removal than other surfactants employed [6][7][8]23]. Its use for restoration of soil contaminated with TPHs and PAHs has been proved to be as efficient as the use of biopiles or in situ flushing pilot plant (41 m 3 ) with similar operational costs (140, 94 and 104 US$/m 3 , respectively) [21,22].…”

Section: Introductionmentioning

confidence: 95%

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Degradation of sodium dodecyl sulphate in water using solar driven Fenton-like advanced oxidation processes

Bandala

Pelaez

Salgado

et al. 2008

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 95%

“…Sodium dodecyl sulphate (SDS) is a common representative of synthetic surfactants with a simple hydrocarbon chain widely used in commercial detergent formulations and nowadays for environmental remediation [3,4,6,7]. Systems involving surfactant-oil-water are being studying due to their high oil recovery potential.…”

Section: Introductionmentioning

confidence: 99%

Degradation of sodium dodecyl sulphate in water using solar driven Fenton-like advanced oxidation processes

Bandala

Pelaez

Salgado

et al. 2008

Journal of Hazardous Materials

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“…(Clarke et al, 1993;Deshpande et al, 1999;Parfitt et al, 1995). The efficiency of nonionic surfactants (e.g., Triton-X100) is dependent on the soil-particle size and the level of divalent cations (e.g., Ca…”

Section: Literature Reviewmentioning

confidence: 99%

“…The second and the third rinses recovered more surfactant from the soil, whereas the following rinses show no further surfactant recovery. The recovery of the surfactant decreases the cost of soil remediation and reduces the concerns associated with the remaining surfactant in the soil after remediation.Although removal efficiency of DDT and its metabolites in a flow-through system was improved by using mixtures of surfactants and prewashing with tap water, the flow-through system was limited due to limitations in transportation of the contaminant molecules from soil particles to the liquid phase containing surfactant micelles (Clarke et al, 1993). This limitation creates a rate-limiting step in the flow-through system hindering the diffusion of the contaminant from the interior of lumpy blocks, such as pieces of porous rock or lumps of porous clay with low aqueous permeability.…”

mentioning

confidence: 99%

“…The movement of the contaminant molecules from soil particles, where the contaminant molecules are sorbed to the liquid phase, containing surfactant micelles, is one of the limitations in flow-through soil-washing techniques, especially for "lumpy" soil with high humic content. Diffusion of the contaminant from the interior of lumpy blocks, such as pieces of porous rock or lumps of porous clay with low aqueous permeability, may be a rate-limiting step in the soil-washing process (Clarke et al, 1993 …”

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confidence: 99%

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Remediation of DDT‐contaminated soil using optimized mixtures of surfactants and a mixing system

Ghazali

McBean

Shen

et al. 2010

Remediation Journal

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Soil contaminated with persistent pesticides, such as DDT, poses a serious risk to humans and to wildlife. A surfactant-aided soil-washing technique was studied as an alternative method for remediation of DDT-contaminated soil. An ex situ soil washing method was investigated using nonionic and anionic surfactants due to the clayey structure of the contaminated soil. A mixture of 1 percent nonionic surfactant (Brij 35) and 1 percent anionic surfactant (SDBS) removed more than 50 percent of DDT from soil in a flow-through system, whereas individual surfactants or other combinations of the surfactants had a lower removal efficiency. The soil-washing technique was improved using a mixing system. The mixture of surfactants was optimized in the mixing system, and the combination of 2 percent Brij 35 and 0.1 percent SDBS was found to be optimum, removing 70 to 80 percent of DDT. Prewashing of the soil with tap water decreased the adsorption of surfactants INTRODUCTIONIn many locations in Canada and elsewhere around the world, soil contamination represents a serious risk to both humans and the environment (Harris et al., 2000). Contamination with organochlorines is considered to be of particular importance since organochlorines are persistent substances that may represent a continuing source of contamination for decades. Among the organochlorines, dichloro-diphenyl-trichloroethane (DDT) is one of the most notorious synthetic pesticides since it continues in use to this day, although use of DDT has been widely restricted in application since 1972 (Hitch & Day, 1992;Martijn et al., 1993;Turusov et al., 2002). Concerns with worldwide spraying of DDT eventually led to use of DDT being banned in most countries in 1972. Also, DDT was subsequently banned for agricultural use worldwide, but its limited use in disease vector control continues to this day in some parts of the world (Vieira et al., 2001).DDT and its metabolites-breakdown or by-products of DDT, including 1,1-dichloro-2,2-bis(p-chlorophenyl)ethane (DDD) and 1,1-dichloro-2,2-bis(p-chlorophenyl) ethylene (DDE)-are extremely persistent in the environment and may accumulate in the food chain (Veith et al., 1979) 119 Remediation of DDT-Contaminated Soil Using Optimized Mixtures of Surfactants and a Mixing Systemhealth, and they are known carcinogens (Kashyap et al., 1977). As a consequence, lands contaminated with DDT are limited in their development potential (e.g., change of land use from agricultural to residential may be disallowed). It is highly likely, for example, that significant expanses of agricultural land continue to have levels of DDT and its metabolites that are elevated in concentration, although only limited testing has been carried out to date. Environmental agencies, such as the U.S. Environmental Protection Agency and the Ontario Ministry of the Environment (MOE), have established standards and guidelines, exceedance of which precludes specific land use. Hence, due to the long half-life of DDT and its metabolites in natural environmental conditions, co...

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Application of sieve‐tray air strippers to the treatment of surfactant‐containing wastewaters

2001

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Soil Clean-Up by Surfactant Washing. II. Design and Evaluation of the Components of the Pilot-Scale Surfactant Recycle System

Cited by 24 publications

References 1 publication

Degradation of sodium dodecyl sulphate in water using solar driven Fenton-like advanced oxidation processes

Degradation of sodium dodecyl sulphate in water using solar driven Fenton-like advanced oxidation processes

Remediation of DDT‐contaminated soil using optimized mixtures of surfactants and a mixing system

Application of sieve‐tray air strippers to the treatment of surfactant‐containing wastewaters

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