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surfactant soil washing

  • Surfactant-Enhanced Soil Washing for Removal of

    01.06.2018· Remediation of these contaminated soils is challenging. Among many treat- ment methods practiced for remediation of petroleum-contaminated soils, surfactant-enhanced soil washing has been widely practiced as a preferred treatment option, as it

    Surfactant-Enhanced Soil Washing for Removal of

    Remediation of these contaminated soils is challenging. Among many treatment methods practiced for remediation of petroleum-contaminated soils, surfactant-enhanced soil washing has been widely practiced as a preferred treatment option, as it is a fast and environmentally accepted method.

    Soil Washing Potential of a Natural Surfactant

    Natural surfactant solutions were also employed for flushing HCB from one-dimensional soil columns. 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.

    Optimization of aeration enhanced surfactant soil washing

    13.02.2020· The soil-washing scheme from soil sampling to contamination then surfactant selection and finally method comparison is shown in Fig. 1. The contaminated soil was washed with different types and concentrations of surfactants, soil solution pH, stirring speed, washing time and airflow rate according to the design of the experiment.

    Optimization of aeration enhanced surfactant soil washing

    13.02.2020· Surfactant-enhanced soil washing has been used for remediation of organic pollutants for an extended period, but its effectiveness and wide application was limited by the high concentration of surfactants utilized.

    Soil Washing Potential of a Natural Surfactant

    27.02.1997· Natural surfactant solutions were also employed for flushing HCB from one-dimensional soil columns. 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.

    Soil Washing Potential of a Natural Surfactant

    Surfactant screening for soil washing: Comparison of foamability and biodegradability of a plant‐based surfactant with commercial surfactants. Journal of Environmental Science and Health, Part A 1998, 33 (7),1249-1273. DOI: 10.1080/10934529809376787. Raghava R Kommalapati, Kalliat T Valsaraj, W.David Constant, Dipak Roy. Soil flushing using colloidal gas aphron suspensions generated from a

    Optimization of aeration enhanced surfactant soil washing

    Surfactant-enhanced soil washing has been used for remediation of organic pollutants for an extended period, but its effectiveness and wide application was limited by the high concentration of surfactants utilized. In this work, the efficiency of conventional soil washing performance was enhanced by 12–25% through the incorporation of air bubbles into the low concentration surfactant soil

    Soil Washing Potential of a Natural Surfactant

    27.02.1997· Surfactant screening for soil washing: Comparison of foamability and biodegradability of a plant‐based surfactant with commercial surfactants. Journal of Environmental Science and Health, Part A 1998, 33, 1249-1273. DOI: 10.1080/10934529809376787. Raghava R Kommalapati, Kalliat T Valsaraj, W.David Constant, Dipak Roy. Soil flushing using colloidal gas aphron suspensions generated from a

    Use of surfactants for the remediation of contaminated

    21.03.2015· Surfactant-enhanced soil washing for hydrophobic organic pollutants can result from two distinct mechanisms: soil roll-up mechanism (occurs below the CMC) and solubilization (occurs above the CMC) . Surfactant monomers before the CMC are responsible for the soil roll-up mechanism. Surfactant monomers accumulate at the soil–contaminant and soil–water interfaces, and change the

    Surfactant-Enhanced Washing of Soils Contaminated with

    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 mg/kg of crude oil [12]. In this work, an old automotive industrial site located

    Optimization of aeration enhanced surfactant soil washing

    Surfactant-enhanced soil washing has been used for remediation of organic pollutants for an extended period, but its effectiveness and wide application was limited by the high concentration of

    Removal of PAHs with surfactant-enhanced soil washing

    Surfactant-enhanced soil washing Influencing factors Removal ratio Solubilization effectiveness abstract PAH removal with surfactant enhanced washing was investigated through a series of laboratory tests to examine the effect of stirring speed, washing time, surfactant concentration, liquid/solid ratio, tempera-ture, and on-and-off mode. The first four factors show significant

    Soil washing using various nonionic surfactants and their

    15.06.2008· Soil washing using various nonionic surfactants and their recovery by selective adsorption with activated carbon. Ahn CK(1), Kim YM, Woo SH, Park JM. Author information: (1)Department of stone Engineering, School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-Dong, Pohang 790-784, Republic of Korea. The performance of

    Surfactant Selection Protocol for Ex Situ Soil Washing

    The surfactant selection protocol resulting from this study will provide guidance for the design of surfactant-based ex-situ soil washing. Eight surfactants have been used at various concentrations for soil washing studies of the three selected soils, all contaminated by petroleum hydrocarbons. The soils are sandy loam to clay loam in texture. Solubilization efficiencies, sorption, phase

    Ex-Situ Soil Washing Achieving Effective Mass Reduction

    Soil Washing using co-solvent and/or surfactant offers the benefit to treat effectively and economically these high contaminant concentration that allow for soil to be re-used or dispose at a lower cost. Bench scale Treatability Study Protocol Laboratory Protocol Fully mixed system of the impacted soil with the co-solvent-surfactant mix at a soil:liquid volume ratio of 1:2 Typical system

    (PDF) Surfactant-Enhanced Soil Washing for Removal of

    Surfactant-Enhanced Soil Washing for Removal of Petroleum Hydrocarbons from Contaminated Soils: A Review. June 2018; Pedosphere 28(3):383-410; DOI: 10.1016/S1002-0160(18)60027-X.

    SURFACTANT ENHANCED WASHING OF SOILS CONTAMINATED

    response, surfactant enhanced soil washing is probably the best way to solve the problem. Lopez et al. (2004) have reported the washing of a soil contaminated with PAHs and heavy petroleum fractions using anionic and nonionic surfactant, with or without salt (NaCl). They observed that when washing with SDS, the addition of NaCl enhanced the TPH removal. In a later work, Torres et al. (2005

    Surfactant Selection Protocol for Ex Situ Soil Washing

    The surfactant selection protocol resulting from this study will provide guidance for the design of surfactant-based ex-situ soil washing. Eight surfactants have been used at various concentrations for soil washing studies of the three selected soils, all contaminated by petroleum hydrocarbons. The soils are sandy loam to clay loam in texture. Solubilization efficiencies, sorption, phase

    Surfactant-Enhanced Washing of Soils Contaminated with

    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 mg/kg of crude oil [12]. In this work, an old automotive industrial site located

    Soil Decontamination by Soil Washing Technique Using

    Soil washing with surfactant helps in removal of NAPL’s.Although the use of surfactants to remediate contaminants in the subsurface is a relatively new area of application, their use in subsurface systems dates back to 1963 when petroleum sulfonates were patented for widespread use in enhanced oil recovery efforts [5-6]. Manuscript received January, 2014. Radha Pandey, Civil Engg Deptt

    Surfactant Enhanced Washing Of Soil Contaminated With

    Surfactant Enhanced Washing of Soil Contaminated wi th Petroleum Hydrocarbons and Treatment of Produced Wa stewaters Using a Biofilter Evelyn Zamudio-Pérez 1, Erick R. Bandala 2, Luis C. Fernandez 1, Luis G.Torres* 1UPIBI- Instituto Politécnico Nacional. Av. Acueducto s.n. Colonia Barrio la Laguna Ticomán. México 07340 DF, México. 2Departamento de Ingeniería Civil y Ambiental

    Surfactant enhanced soil washing technique for removal

    Surfactant enhanced soil washing technique for removal of trace metals from contaminated soils . By Beini Xu. Abstract. Increasingly stringent environmental regulations and legislation around the world are demanding the development of environmentally friendly technologies for contaminated site remediation. Researchers have recognized soil washing as an economically promising in-situ treatment

    Remediation of Nitrobenzene Contaminated Soil by

    The surfactant enhanced washing process may be efficient, but the pollutants can only be transferred from soil to washing effluent, further treatment is usually required for complete detoxification of the pollutant in the washing effluent. The presence of surfactant increases the difficulty in the post-treatment of pollutant, and the degradation treatment of the washing effluent may lead to

    Efficacy of selective surfactants/detergents as washing

    corresponding per cent soil removal by selective surfactants for their effective application in minimum or appropriate concentration level as detergent for washing of a soiled white cotton fabric, (iii) to study the changes in surface colour strength and wash fastness rating of reactive dyed cotton fabrics by washing with selective surfactants, and (iv) to study the changes in common textile

    What are surfactants and how do they work?

    Surfactants are typically classified based on their polar head as the hydrophobic tails are often similar. If the head group has no charge, the surfactant is called non-ionic. If the head group has negative or positive charge, it is called anionic or cationic, respectively. If it contains both positive and negative groups, then the surfactant is called zwitterionic.

    Surfactant-Enhanced Washing of Soils Contaminated with

    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 mg/kg of crude oil [12]. In this work, an old automotive industrial site located

    (PDF) Surfactant-Enhanced Soil Washing for Removal of

    Surfactant-Enhanced Soil Washing for Removal of Petroleum Hydrocarbons from Contaminated Soils: A Review. June 2018; Pedosphere 28(3):383-410; DOI: 10.1016/S1002-0160(18)60027-X.

    Surfactant-Enhanced Washing of Soils Contaminated with

    Surfactants included 5 anionics, 2 zwitterionic, 5 nonionics and 3 natural gums. Sulfopon 30 at a concentration of 0.5% offered the best surfactant performance. The TPH removals employing the different surfactants were in the range from 38% to 68%, in comparison to the soil washing with water (10% of TPH removal). Once the surfactant was

    (PDF) Remediation of Contaminated Soils by Surfactant

    Soil washing of DO-11 by surfactant Tween 80 in systems with five different soils: dye and soil concentration30 mg/L and 3.75 g/50 mL, respectively; log S was used for x-axis to get better

    Effect of Ultrasound on Surfactant-Aided Soil Washing

    Effect of Ultrasound on Surfactant-Aided Soil Washing To cite this article: Seungmin Na et al 2007 Jpn. J. Appl. Phys. 46 4775 View the article online for updates and enhancements. Related content Ultrasonically Enhanced Effectiveness of Various Surfactants on Diesel Removal from Contaminated Soil Young Uk Kim, Sang Hyun Park, Jun Ho Moon et al.-Use of ultrasound to monitor physical

    SURFACTANT ENHANCED WASHING OF SOILS CONTAMINATED

    response, surfactant enhanced soil washing is probably the best way to solve the problem. Lopez et al. (2004) have reported the washing of a soil contaminated with PAHs and heavy petroleum fractions using anionic and nonionic surfactant, with or without salt (NaCl). They observed that when washing with SDS, the addition of NaCl enhanced the TPH removal. In a later work, Torres et al. (2005

    Remediation of Nitrobenzene Contaminated Soil by

    12.08.2015· 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 (20:1) to extract NB contaminated soil (47.3 mg kg-1), resulting in NB desorption removal

    Soil washing using various nonionic surfactants and their

    15.06.2008· Soil washing using various nonionic surfactants and their recovery by selective adsorption with activated carbon. Ahn CK(1), Kim YM, Woo SH, Park JM. Author information: (1)Department of stone Engineering, School of Environmental Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-Dong, Pohang 790-784, Republic of Korea. The performance of

    Conductive-Diamond Electrochemical Oxidation of

    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

    Efficacy of selective surfactants/detergents as washing

    corresponding per cent soil removal by selective surfactants for their effective application in minimum or appropriate concentration level as detergent for washing of a soiled white cotton fabric, (iii) to study the changes in surface colour strength and wash fastness rating of reactive dyed cotton fabrics by washing with selective surfactants, and (iv) to study the changes in common textile

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