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  • Remediation of Polycyclic Aromatic Hydrocarbon .

    Using flushing solutions with different nonionic surfactants, this study investigated the remediation of polycyclic aromatic hydrocarbon (PAH)-contaminated soils with different organic carbon contents. Naphthalene and anthracene are the two delegates of PAHs used in the study.

  • Combinations of Surfactant Flushing and Bioremediation for .

    Combinations of Surfactant Flushing and Bioremediation for Removing Fuel Hydrocarbons from Contaminated Soils Article in CLEAN - Soil Air Water 44(8) · .

  • Surfactant Flushing (TASK™) - Remediation Systems

    Surfactant Flushing (TASK™) 01275 856700. In-Situ Surfactant Flushing. Cornelsen Ltd. is the authorised distributor of Tersus Advanced Surface Kinetics (TASK) surfactant and related products, including the patented methods for in-situ surfactant and chemical oxidation flushing (US Patent Nos. 6,913,419 and 7,021,863).

  • Petroleum Hydrocarbon Remediation Technologies

    Kinetics) and related products, including the patented methods for in situ surfactant and chemical oxidation flushing (US Patent Nos. 6913419, 7021863, 7364386, 7,708,496, and 7,677,836). Our anionic surfactant formulations have the unique ability to selectively desorb and liberate sorbed petroleum hydrocarbons from soil

  • Biosurfactant-enhanced removal of residual hydrocarbon .

    Biosurfactant-enhanced removal of residual hydrocarbon from soil In a series of column experiments, residual hexadecane saturation was established by pumping 14 C-hexadecane into water-saturated sand columns and then flushing with water at a velocity of 25 cm h −1 .

  • A Biosurfactant-Enhanced Soil Flushing for the Removal of .

    A Biosurfactant-Enhanced Soil Flushing for the Removal of Phenanthrene and Diesel in Sand Article in Environmental Geochemistry and Health 26(1):5-11 · .

  • Soil Flushing - an overview | ScienceDirect Topics

    Soil washing method for treating contaminated soil costs around US 75–200 yd −3 (Peters, 1999). Soil flushing is preferable for permeable soils containing little organic matter and clay content, where Cr is the only contaminant in the polluted soil (Pagilla and Canter, 1999).

  • Treatability Testing for Weathered Hydrocarbons in Soils .

    Treatability Testing for Weathered Hydrocarbons in Soils: Bioremediation, Soil Washing, Chemical Oxidation, and Thermal Desorption. . (soil washing and oxidation), or energy input (thermal desorption) for treatment of target hydrocarbons on a full scale. . Soil Washing/Flushing Treatments of Organic Pollutants Enhanced by Cyclodextrins and .

  • OPTIMASI RASIO SOLID/LIQUID PADA TEKNIK SOIL WASHING .

    Pre-study for application of soil washing is examination of soil characteristics including Oil and Grease, TPH, GCMS, grain size and XRD analysis. Sand, Loam, and Sandy Loam with TPH consentration of 2.34%, 1.61% and 4.48% respectively will be treated using Tween 80 surfactant enhanced soil washing method and optimum solid/liquid ratio.

  • Soil Washing Potential of a Natural Surfactant .

    HCB recoveries after 12 pore volumes of flushing with 0.5 and 1% natural surfactant solutions were 20 and 100 times more than that recovered by water flooding. These promising results warrant further research to establish the usefulness of plant-based surfactants for soil washing .

  • Soil Washing Potential of a Natural Surfactant .

    Biodegradable natural surfactants obtained from plants can be an attractive alternative to synthetic surfactants in the remediation of contaminated soils. In this research, a plant-based surfactant obtained from the fruit pericarp of Sapindus mukurossi, a tree generally grown in tropical regions of Asia, is tested. A simple and economical method for the preparation of the surfactant .

  • Soil Flushing - an overview | ScienceDirect Topics

    Acid and chelator soil washing are the two most prevalent removal methods. Soil washing currently involves soil flushing an in situ process in which the washing solution is forced through the in-place soil matrix, ex situ extraction of heavy metals from the soil slurry in reactors, and soil heap leaching. Another heavy metal removal technology .

  • Ex Situ Treatment of Hydrocarbon-Contaminated Soil Using .

    Ex situ soil washing of highly contaminated silt loam soil using core-crosslinked amphiphilic polymer nanoparticles. . Surfactant flushing remediation of o-dichlorobenzene and p-dichlorobenzene contaminated soil. . Lactobacillus pentosus and Comparison with Sodium Dodecyl Sulphate for the Bioremediation of Hydrocarbon Contaminated Soil .

  • In Situ Flushing with Surfactants and Cosolvents

    In situ flushing with surfactants and cosolvents recently has been emerging as a successful means of remediation of contaminated soils and groundwater. EPA's Technology Innovation Office (TIO) provided a grant through the National Network for Environmental Management Studies

  • (PDF) Soil flushing of cresols contaminated soil .

    Soil flushing is one of the soil remediation technologies which could by applied for treatment of hydrocarbon contaminated soil. Flushing of the contaminated soil samples was .

  • Soil Washing - an overview | ScienceDirect Topics

    Soil-washing (solvent extraction) Soil-washing is a solvent-extraction process. It uses the difference in the solubility of petroleum and the soil in water as the driving force. First, contaminated soils are usually excavated (although in situ soil flushing systems do exist) and the soil screened to remove large rocks and materials. If there .

  • Removing of hydrocarbon contaminated soil via air flushing .

    Aug 02, 2012 · Surfactants enhanced air sparging actually acts to displace the organic contaminant entrapped in soil pores. In this work, a comparison study was carried out between two air-flushing modes, namely, continuous air flushing and pulsed air flushing, which was conducted to remediate soil contaminated with waste-lubricant oil.

  • Microbes and enzymes: the future for bioremediation of .

    while soil washing relies on surfactants and oils to flush out PAHs, which then require disposal or further treatment. The researchers highlight that the efficacy of soil washing can be improved by using the natural surfactant humic acid, which has the added benefit of .

  • Fact Sheet A Citizen's Guide to In Situ Soil Flushing

    United States Environmental Protection Agency Solid Waste and Emergency Response (5102G) EPA 542-F-96-006 April 1996 vvEPA A Citizen's Guide to In Situ Soil Flushing Technology Innovation Office Technology Fact Sheet What is in situ soil flushing? In situ soil flushing is an innovative treatment tech- nology that floods contaminated soils with .

  • CLU-IN | Databases > In Situ Flushing Site Profiles

    In Situ Flushing Site Profiles summarize timely information about selected full- and field-scale applications of in situ flushing technologies. . Solar-powered In Situ Surfactant Flushing at a Hydrocarbon Burn Facility in Florida . (November 16-31, 2012). Miller, C., S. Ruffing, and R. Kline. ?Solar-Powered In-situ Soil Washing with .

  • An Optimized Surfactant Formulation for the Remediation of .

    Reduction of hydraulic conductivity during the treatment of hydrocarbon polluted soils by using surfactants may be an inconvenience for a good recovery of the pollutant. The purpose of the present research work is to determine the main factor responsible for this reduction and by the same way to give an application solution to this problem.

  • Surfactant-enhanced remediation of contaminated soil: a .

    Surfactant soil washing was originally developed in petroleum recovery operations. Surfactants have potential for use in aquifer remediation of DNAPLs. Several factors can influence the efficiency of soil flushing with surfactants. Groundwater that is too hard may be detrimental to the effectiveness of a surfactant . Surfactants can adsorb onto .

  • Soil Remediation by Electro-Fenton Process | SpringerLink

    May 24, 2017 · Abstract. Soil remediation by electro-Fenton (EF) process has been recently proposed in literature. Being applied for solution treatment, EF is mainly combined with soil washing (SW)/soil flushing (SF) separation techniques to remove the organic pollutants.

  • In Situ Flushing - CLU-IN

    Many terms have been used to describe in situ flushing techniques, such as soil flushing, water flooding, chemically enhanced solubilization for aquifer remediation, surfactant-enhanced aquifer remediation, and in situ soil washing. Soil flushing is sometimes confused with soil washing because both use aqueous solutions to mobilize contaminants .

  • Optimizing a Washing Procedure To Mobilize Polycyclic .

    Soil washing was combined with surfactant regeneration and detoxification steps to generate innocuous products. Ultrasonication of field-contaminated soil with a 3% (w/v) surfactant suspension for 5 min mobilized appreciable quantities of all polycyclic aromatic hydrocarbon (PAH) compounds.

  • Treatment of Fuel-Oil Contaminated Soils by Biodegradable .

    Oct 10, 2009 · In the surfactant washing stage, biodegradable surfactant, Simple Green (SG) (50 g L − 1), was applied to flush fuel-oil contaminated soils with initial total petroleum-hydrocarbons (TPHs) concentration of 50, 000 mg kg − 1.

  • Removing of hydrocarbon contaminated soil via air flushing .

    Abstract. Surfactants enhanced air sparging actually acts to displace the organic contaminant entrapped in soil pores. In this work, a comparison study was carried out between two air-flushing modes, namely, continuous air flushing and pulsed air flushing, which was conducted to remediate soil contaminated with waste-lubricant oil.

  • Treatment of Fuel-Oil Contaminated Soils by Biodegradable .

    In the surfactant washing stage, biodegradable surfactant, Simple Green (SG) (50 g L − 1), was applied to flush fuel-oil contaminated soils with initial total petroleum-hydrocarbons (TPHs) concentration of 50, 000 mg kg − 1.

  • VI.Remedial Action 2 — Soil Treatment Technologies For .

    a. Soil Washing Process Description: Contaminants which have adsorbed onto soil particles are separated by washing with a leaching agent, and surfactant, chelating agents, or pH adjustment. Soil is mixed with washwater in order to remove contaminants adsorbed onto soil particles. Sometimes, extraction agents may be added to enhance this process.

  • Soil washing, ozofractionation and metal sequestration .

    polycyclic aromatic hydrocarbons from 13.2 mg/L to <0.5 mg/L and cyanide from 5.9 mg/L to 0.02 mg/L, and reagents sequestered heavy metals in the flushing solution. Keywords: soil washing, surfactant, flushing solution, ozofractionation, sequestration 1. Introduction