Physicochemical Aspects of the Application of Surfactants and Biosurfactants in Soil Remediation

Pastewski, Sebastian; Hallmann, Elżbieta; Mędrzycka, Krystyna

doi:10.1089/ees.2006.23.579

Cited by 12 publications

(5 citation statements)

References 12 publications

(8 reference statements)

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“…This is extremely important when reconstituting dry powders, dry beads or reagents in solid-phase devices. Wetting properties, emulsification and micellar solubilization of nonionic surfactants such as Rokanol L10, Triton X-100 and BS JBR 425 have been investigated (Pastewski, Hallmann, and Medrzycka, 2006).…”

Section: Functional Properties Of Surfactant/emulsifiermentioning

confidence: 99%

Methods for investigating biosurfactants and bioemulsifiers: a review

Satpute

Banpurkar

Dhakephalkar

et al. 2010

Critical Reviews in Biotechnology

344

209

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Microorganisms produce biosurfactant (BS)/bioemulsifier (BE) with wide structural and functional diversity which consequently results in the adoption of different techniques to investigate these diverse amphiphilic molecules. This review aims to compile information on different microbial screening methods, surface active products extraction procedures, and analytical terminologies used in this field. Different methods for screening microbial culture broth or cell biomass for surface active compounds production are also presented and their possible advantages and disadvantages highlighted. In addition, the most common methods for purification, detection, and structure determination for a wide range of BS and BE are introduced. Simple techniques such as precipitation using acetone, ammonium sulphate, solvent extraction, ultrafiltration, ion exchange, dialysis, ultrafiltration, lyophilization, isoelectric focusing (IEF), and thin layer chromatography (TLC) are described. Other more elaborate techniques including high pressure liquid chromatography (HPLC), infra red (IR), gas chromatography-mass spectroscopy (GC-MS), nuclear magnetic resonance (NMR), and fast atom bombardment mass spectroscopy (FAB-MS), protein digestion and amino acid sequencing are also elucidated. Various experimental strategies including static light scattering and hydrodynamic characterization for micelles have been discussed. A combination of various analytical methods are often essential in this area of research and a numbers of trials and errors to isolate, purify and characterize various surface active agents are required. This review introduces the various methodologies that are indispensable for studying biosurfactants and bioemulsifiers.

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Section: Functional Properties Of Surfactant/emulsifiermentioning

confidence: 99%

Methods for investigating biosurfactants and bioemulsifiers: a review

Satpute

Banpurkar

Dhakephalkar

et al. 2010

Critical Reviews in Biotechnology

344

209

View full text Add to dashboard Cite

show abstract

“…Rokanol NL6 was obtained from PCC Rokita S.A. (Brzeg) and it is polydisperse mixture of polyethoxylated alcohols. Some of physicochemical properties of investigated surfactant were presented elsewhere [15]. All chemicals were of reagent grade, or analytical grade when available, and were used without further purification.…”

Section: Experimental Materialsmentioning

confidence: 99%

Combined Chemical-Biological Treatment of Effluents from Soil Remediation Processes by Surfactants Solutions Flushing

Hallmann¹,

Tomczak-Wandzel²,

Mędrzycka³

2012

Ecological Chemistry and Engineering S

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Abstract:In recent years combined chemical-biological wastewater treatment processes have received increasing interest. In the present study wastewater from soil remediation processes were treated by means of 1-step processes like Fenton, aerobic degradation and 2-steps combined method. The effluents resulting from soil remediation processes consist of high surfactant concentration solutions, mobilized oils and oil-in-water (o/w) emulsions. The effectiveness of wastewater treatment was evaluated by COD reduction and surfactant removal. The application of Fenton process alone showed around 80% of COD and surfactant removal, and in case of aerobic process only 60% of COD and 50% of surfactant removal was accomplished. However, the maximum COD reduction and surfactant removal from wastewater samples, above 90%, was obtained in aerobic degradation with Fenton process as pretreatment. Thus, the Fenton process could be effectively applied as a pretreatment step to improve the reduction of both COD and surfactant from wastewater resulting from soil remediation.

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“…To aid the application, sodium chloride was added to give the required medium for complete rejection of HC into water. The emulsions stabilized by Triton X-100 were the most stable [7]. Acidification was also important because the emulsion breakdown occurs at 10 < pH < 13.5.…”

Section: Water-hydrocarbons Mixing and Emulsificationmentioning

confidence: 99%

“…Due to their potent solubilizing and emulsifying properties, synthetic surfactants and biosurfactants can be used for removing hydrophobic pollutants from soil. Pastewski, et al [7], investigated the wetting properties, emulsification and micellar solubilization of nonionic surfactants and biosurfactant. Emulsions stabilized by Triton X-100 were the most stable.…”

Section: Introductionmentioning

confidence: 99%

Turbidimetric Determination of Hydrocarbon Contamination in Passaic River Sediments and Refinery Polluted Soils

Barbooti¹

2011

JEP

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A rapid method is described for the determination of petroleum hydrocarbons in soil samples. The method is based on the extraction of hydrocarbons by a solvent and the treatment of the solution with an aqueous solution of a surfactant to release the hydrocarbons to the water phase in the form of a stable emulsion. The emulsion is then utilized to measure the hydrocarbon content by turbidimetry. The effects of various operating parameters including the surfactant solution composition and time of extraction and time of mixing with the releasing solution are investigated. The stability of the emulsion was improved in acid environment containing and electrolyte. The turbidity values (T) were related with hydrocarbon concentration in the extract (C) by the following equation. Turbidity = 2.75 C + 205.7. With R<sup>2<suip> = 0.9929. The soil hydrocarbon content (SHC) measured in µg/g can then be calculated using the formula: SHC = [Extract Vol. (mL) x C]/Sample Wt (g). The results correlated well with the results of total hydrocarbons in soils determined by standard methods. The method was applied for the estimation of hydrocarbons in Passaic river sediments taken from various locations and depths. For field work the method was used to supply data on the hydrocarbon contamination of soil samples taken within an oil refinery and a monitoring well drilled within heavy hydrocarbon waste dumping location

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Physicochemical Aspects of the Application of Surfactants and Biosurfactants in Soil Remediation

Cited by 12 publications

References 12 publications

Methods for investigating biosurfactants and bioemulsifiers: a review

Methods for investigating biosurfactants and bioemulsifiers: a review

Combined Chemical-Biological Treatment of Effluents from Soil Remediation Processes by Surfactants Solutions Flushing

Turbidimetric Determination of Hydrocarbon Contamination in Passaic River Sediments and Refinery Polluted Soils

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