Surfactant-enhanced remediation of organic contaminated soil and water

Paria, Santanu

doi:10.1016/j.cis.2007.11.001

Cited by 462 publications

(268 citation statements)

References 267 publications

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“…The other mechanism, 'solubilization', occurs above the CMC when contaminants are partitioned from the soil into the hydrophobic core of surfactant micelles (Deshpande et al, 1999). With these processes, a surfactant can increase the solubility of organic contaminants or lower the interfacial tension to enhance the mobility of the organic contaminants (West and Harwell, 1992 (Paria, 2008;Khalladi et al, 2009;Huguenot et al, 2015). However, even though the use of surfactants in the subsurface was originally developed in the petroleum recovery area to increase the amount of extracted crude oils from the subsurface, the feasibility of the surfactant usage for highly NAPL contaminated soils or aquifer having free products (TPH concentration > 100,000 mg/kg) has not been evaluated yet.…”

Section: Surfactantsmentioning

confidence: 99%

Surfactant-enhanced Soil Washing using Tween and Tergitol Series Surfactants for Kuwait Soil Heavily Contaminated with Crude Oil

Heo¹,

Lee²

2015

Journal of Soil and Groundwater Environment

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Batch experiments were performed to investigate the feasibility of a surfactant-enhanced soil washing process for soils heavily contaminated with crude oil in Kuwait. TPH concentration of the contaminated soil was 223,754 mg/kg, sampled from the bottom of a vaporized oil extraction pond in the Burgan reservoir field. Commercialized eight nonionic surfactants (Tween and Tergitol series) were used to measure the aqueous solubility for the crude oil. Among them, two Tergitol surfactants were used to evaluate the TPH removal efficiency of the surfactant-enhanced soil washing for heavily contaminated Kuwait soil. The solubility of the crude oil in surfactant solution was in the order Tergitol 15-S-7 > Tergitol 15-S-9 > Tergitol 15-S-12 > Tween-80 > Tween-20 > Tween-60, which showed that the crude oil solubilities of the Tergitol series were higher than those of the Tween series. The TPH removal efficiencies of 2% and 5% Tergitol 15-S-9 solution were 59% and 65%, respectively. Because the residual TPH concentration in the washed soil was still higher than the clean-up level (10,000 mg/kg), the soil washing process was repeated five times. After the fifth washing, the residual TPH concentration in the soil went down to 7,680 mg/kg and its removal efficiency was 97%.

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Section: Surfactantsmentioning

confidence: 99%

Surfactant-enhanced Soil Washing using Tween and Tergitol Series Surfactants for Kuwait Soil Heavily Contaminated with Crude Oil

Heo¹,

Lee²

2015

Journal of Soil and Groundwater Environment

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“…These small aggregates would cover the hydrophobic 2,4,6-TCP which would be inside the aggregate and therefore dissolved in the solution, further increasing the quantity of dissolved 2,4,6-TCP. However, as the primary aggregates adsorbed on the soil matrix, it would lead to 2,4,6-TCP partitioning into immobile adsorbed surfactants [17], so that the adsorption capacity had a small rebound. Once the added concentration of NaDC exceeded CMC 2 , the quantity of 2,4,6-TCP adsorbed onto the soil surface would increase substantially, as shown in Fig.…”

Section: Solubilization Mechanism In the Presence Of Surfactantsmentioning

confidence: 99%

“…It has been well known that surfactants can remediate soils by solubilizing HOCs and then enhancing the desorption of HOCs from soils [15,16]. Even so, some research has indicated that the surfactants would also adsorb onto the soil matrix and thereby lead to HOCs partitioning into the immobilised adsorbed surfactants [17][18][19][20]. This would result in a rebound in HOCs adsorption capacity onto the soil [2].…”

Section: Introductionmentioning

confidence: 99%

“…While traditional surfactants have the problems of low biodegradability and generation of toxic degradation products, they will also have certain detrimental effects on humans and animals [22]. Recently, biosurfactants have gained more attention compared to synthetic surfactants due to the environmentally compatible nature of those compounds [17]. Biosurfactants can be as effective as the highly used synthetic surfactants, and at the same time have some distinct advantages over synthetic surfactants, including high specificity, biodegradability and biocompatibility [22].…”

Section: Introductionmentioning

confidence: 99%

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Solubilization and adsorption behaviors of 2,4,6-trichlorophenol in the presence of surfactants

Zeng

Peng

Liu

et al. 2013

Chemical Engineering Journal

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h i g h l i g h t sThe solubility of 2,4,6-trichlorophenol was enhanced 72 times by sodium deoxycholateat pH 7.5. NaDC demonstrated the best solubilization potential, followed by NaC, SDS and b-CD. The adsorption of 2,4,6-trichlorophenol was almost zero when NaC concentration was above CMC 2 . a r t i c l e i n f o t r a c tThe solubilization of 2,4,6-trichlorophenol (2,4,6-TCP) was studied in the presence of four different surfactants, namely sodium deoxycholate (NaDC), sodium cholate (NaC), sodium lauryl sulfate (SDS) and bcyclodextrin (b-CD). The solubility of 2,4,6-TCP was enhanced a maximum of 72 times especially by NaDC at pH 7.5. In addition, other than great solubilization capacities, NaDC and NaC have the advantages of high biodegradability and biocompatibility as biosurfactants. The adsorption behaviors of 2,4,6-TCP on the surface of soil in the presence of these solubilizers were examined. The results showed that the adsorption isotherms for all studied surfactants matched the Henry adsorption isotherm well. The adsorption mechanisms were explored and the adsorption behaviors of 2,4,6-TCP were affected by different micelle forms of the surfactants based on their critical micelle concentration (CMC). The adsorption process was demonstrated by a redistribution procedure between surfactants in solution and surfactants adsorbed onto the soil surface. In particular, the adsorption of 2,4,6-TCP was almost zero when NaC concentration was above CMC 2 .The results of our study have important implications for soil remediation and non-point source pollution control.

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“…On the other hand, polycondensation reactions are traditionally performed in polar high-boiling-point organic solvents such as N-methyl-2-pyrrolidone (NMP), N,Ndimethylacetamide (DMAc), and N,N-dimethylformamide (DMF), which generally cause several ecological disadvantages further than the imposition of the overcost on synthetic methods. So development of the effective techniques for replacing or removing hazardous materials is one of the recent environmental issues [19,20]. Recently, ionic liquids (ILs) have been of interest in many fields of chemistry because of their exclusive properties such as solubility, nonvolatility, high reactivity, low flammability, and possibility of recycling [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Ionic Liquid-Catalyzed Preparation of Aromatic Polyamides Containing Phthalazinone Moiety

Zahmatkesh

2012

ISRN Polymer Science

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An unsymmetrical heterocyclic dicarboxylic acid monomer, 4-[4-(4-carboxy phenoxy)-naphthyl]-2-(4-carboxyphenyl) phthalazin-1-one (1) was successfully prepared. A series of polyamides containing phthalazinone were prepared from the prepared dicarboxylic acid with various aromatic diamines in an ionic liquid (IL) as a green, safe, and eco-friendly medium and also reactions catalysis agent. Evaluation of data shows that IL is the better polyamidation medium than the reported method and the catalysis stands on the higher inherent viscosities and yields of the obtained PAs and the rate of polymerizations beyond the greener reaction conditions and deletion of some essential reagents in conventional manner. Characterization was performed by means of 1 H-NMR and FT-IR spectroscopy, elemental analysis, thermogravimetric analysis, and differential scanning calorimetric techniques. Molecular weights of the obtained polyamides were evaluated viscometrically, and the measured inherent viscosities were in the range of 0.46-0.71 dL/g. These polyamides were readily soluble in many organic solvents. These polymers still keep good thermal stability with high glass transition temperatures in the range of 310-345 • C and the decomposition temperature under the nitrogen atmosphere for 10% weight-loss temperatures in excess of 488 • C.

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Surfactant-enhanced remediation of organic contaminated soil and water

Cited by 462 publications

References 267 publications

Surfactant-enhanced Soil Washing using Tween and Tergitol Series Surfactants for Kuwait Soil Heavily Contaminated with Crude Oil

Surfactant-enhanced Soil Washing using Tween and Tergitol Series Surfactants for Kuwait Soil Heavily Contaminated with Crude Oil

Solubilization and adsorption behaviors of 2,4,6-trichlorophenol in the presence of surfactants

Ionic Liquid-Catalyzed Preparation of Aromatic Polyamides Containing Phthalazinone Moiety

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