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Surfactant Soil Washing

Surfactant Soil Washing

  • PDF Surfactantenhanced soil washing for the remediation

    PDF Surfactantenhanced soil washing for the remediation

    It was found that the anionic surfactant SDS showed the best results, being capable of removing up to 50 of the pesticide using one soil-washing step, and up to 80 using two consecu- tive soil-washing steps whereas the non-ionic surfactant Brij 30 showed lower efficiency, removing only 13 of the pesticide from the soil under the most ...

  • Process for insitu surfactant washing of contaminated

    Process for insitu surfactant washing of contaminated

    In addition, soil-contaminant samples are used in the important selection of a surfactant and an aqueous surfactant concentration for purposes of the washing operation of our process. Soil-contaminant samples may be packed into a cylindrical glass column for a laboratory testing and selection of the surfactant.

  • Surfactant selection for enhancing ex situ soil washing

    Surfactant selection for enhancing ex situ soil washing

    Feb 01, 1999 Surfactant enhanced soil washing can result from two distinct mechanisms one occurs below the critical micelle concentration soil rollup mechanism and the other occurs above the critical micelle concentration solubilization. Surfactant monomers are responsible for the soil rollup mechanism which occurs in two steps.

  • Surfactant Washing to Remove Heavy Metal Pollution in Soil

    Surfactant Washing to Remove Heavy Metal Pollution in Soil

    TitleSurfactant Washing to Remove Heavy Metal Pollution in Soil A Review VOLUME 13 ISSUE 1 AuthorsJianghong Liu, Jian Xue, Dandan Yuan, Xiaohang Wei and Huimin Su AffiliationProvincial Key Laboratory of Oil amp Gas Chemical Technology, College of Chemistry amp Chemical Engineering, Northeast Petroleum University, Daqing, 163318, Provincial Key Laboratory of Oil amp Gas Chemical Technology ...

  • Soil cleanup by surfactant washing I Laboratory results

    Soil cleanup by surfactant washing I Laboratory results

    Jan 01, 1991 The removal of weathered-in PCBs from clayey soil by surfactant washing is demonstrated at bench scale. Spent surfactant solution was treated for recycle at bench scale by countercurrent liquid-liquid extraction for the removal of nonvolatile contaminants, and by thin film aeration in packed columns ...

  • Permeability changes by surfactant solution an

    Permeability changes by surfactant solution an

    Aug 23, 2021 Additionally, the efficiency of washing process of an adsorbed surfactant molecular layer at the pore surfaces was greater that before the critical micelle concentration. Leakage of wastewater from sewer lines may result in contamination of soil and groundwater. The widespread use of detergents is causing relatively high con

  • PDF SurfactantEnhanced Washing of Soils Contaminated

    PDF SurfactantEnhanced Washing of Soils Contaminated

    Surfactant-Enhanced Washing of Soils Contaminated with Wasted-Automotive Oils and the Quality of the Produced Wastewater. Journal of Environmental Protection, 2013. Erick Bandala. ... Characterization and treatability of a contaminated soil from an oil exploration zone. By Erick Bandala.

  • SurfactantEnhanced Washing of Soils Contaminated

    SurfactantEnhanced Washing of Soils Contaminated

    80 for the same washing process, finding that synthetic surfactants were clearly less efficient 40 and 35, removal, respectively. Another experiment using a non- ionic surfactant Brij 35 showed removals of crude oil from soils of 93.54 in a surfactant-enhanced washing of soil contaminated with 50,000 mgkg of crude oil 12.

  • How to Make Surfactants for Plants Home Guides SF Gate

    How to Make Surfactants for Plants Home Guides SF Gate

    A surfactant, short for surface active agent, is a substance that decreases the surface tension of a liquid. In gardening, surfactants help pesticides stick to plants, thereby making them more ...

  • Conductivediamond electrochemicaloxidation of

    Conductivediamond electrochemicaloxidation of

    12 surfactant-aided soil washing SASW and electrochemical surfactant-aided soil-13 washing ESASW have become relevant treatments for these types of soils, as they 14 allow transfer of the pollutants from the soil to the washing fluid. This process 15 remediates the soil and thus converts the problem of soil remediation into a potentially 16 ...

  • Remediation of Contaminated Soils by SurfactantAided Soil

    Remediation of Contaminated Soils by SurfactantAided Soil

    Jan 01, 2003 Soil-washing performance curve 1K d for HOCs at various Brij 35 concentrations, where 3.75 g of Tai Mo Shan soil at various concentrations of Brij 35 surfactant solutions higher than CMC soil ...

  • Surfactantenhanced soil washing for the remediation of

    Surfactantenhanced soil washing for the remediation of

    The application of surfactant-enhanced soil washing for the remediation of soil contaminated with a chlorinated pesticide was tested. The pesticide used, 2,4-dichlorophenoxyacetic acid 2,4-D, is one of the most widely applied in Mexico.

  • Optimization of aeration enhanced surfactant soil washing

    Optimization of aeration enhanced surfactant soil washing

    4 rows Feb 13, 2020 Abstract. Surfactant-enhanced soil washing has been used for remediation of organic pollutants ...

  • Surfactant screening for soil washing Comparison of

    Surfactant screening for soil washing Comparison of

    Dec 15, 2008 1998. Surfactant screening for soil washing Comparison of foamability and biodegradability of a plantbased surfactant with commercial surfactants. Journal of Environmental Science and Health, Part A Vol. 33, No. 7, pp. 1249-1273.

  • The Chemistry of Cleaning The American Cleaning

    The Chemistry of Cleaning The American Cleaning

    The soil is also hydrophobic, so it likes the environment the micelle creates. The attraction of the soil to the inside of the surfactant micelle helps loosen the soil from its surface. Once the soil lifts off the surface, it becomes suspended in the water in the micelle. This suspension is also known as emulsification of one liquid into another.

  • Soil Flushing FRTR

    Soil Flushing FRTR

    Soil flushing is an in situ process that extracts contaminants from the formation using water, possibly combined with other suitable amendments such as a surfactant, cosolvent, acid, or base. The aqueous solution is applied to the soil surface or introduced into the vadose zone, saturated zone or both. Contaminants in the soil partition into ...

  • ConductiveDiamond Electrochemical Oxidation of Surfactant

    ConductiveDiamond Electrochemical Oxidation of Surfactant

    Washing of soils polluted with polycyclic aromatic hydrocarbons PAHs using surfactant is a widely used technique. Once the pollutant is transferred to the washing solution, the polluted wastewater has to be treated. In this work, the feasibility of conductive-diamond electrochemical oxidation CDEO to treat wastewater polluted with phenanthrene selected as model PAHs and three different ...

  • Remediation of Contaminated Soils by SurfactantAided Soil

    Remediation of Contaminated Soils by SurfactantAided Soil

    Jan 01, 2003 Reciprocal surfactant-soil solubilization coefficients 1 K d, octanol-water partition coefficients K ow, fractional organic carbon content of the soil f oc, and surfactant concentration were correlated for the soil-washing process using a proposed surfactant-aided soil-washing model.

  • Efficient remediation of crude oilcontaminated soil using

    Efficient remediation of crude oilcontaminated soil using

    Jan 18, 2019 This surfactant-associated soil-washing procedure can remediate contaminated soils mainly based on two mechanisms 1 dissolution and solubilization of hydrophobic organic contaminants from soils into hydrophobic cores of surfactant micelles and 2 mobilization induced by reducing interfacial tension. 1315 However, the surfactant ...

  • Remediation of Nitrobenzene Contaminated Soil by

    Remediation of Nitrobenzene Contaminated Soil by

    Aug 12, 2015 The combination of surfactant enhanced soil washing and degradation of nitrobenzene NB in effluent with persulfate was investigated to remediate NB contaminated soil. Aqueous solution of sodium dodecylbenzenesulfonate SDBS, 24.0 mmol L-1 was used at a given mass ratio of solution to soil 201 to extract NB contaminated soil 47.3 mg kg-1, resulting in NB desorption removal