hydrocarbon soil washing surfactant flushing

EFFECT OF SOIL WASHING ON PETROLEUM- HYDROCARBON ...

Key words: soil washing, petroleum hydrocarbons, surfactant, humic acids, SEM INTRODUCTION Soil washing and flushing have been proposed as possible remediation technologies for soils contaminated by petroleum hydrocarbons and other hydrophobic organic chemicals (Nash, 1987;

Combination of surfactant enhanced soil washing and ...

Apr 15, 2015 · An ex situ soil column washing experiment was performed on a genuinely diesel-contaminated soil. The washing solution was enriched with surfactant Tween ® 80 at different concentrations, higher than the critical micellar concentration (CMC). The impact of soil washing was evaluated on the hydrocarbons concentration in the leachates collected ...

Surfactant-Enhanced Soil Washing for Removal of Petroleum ...

Jun 01, 2018 · Upcoming surfactants like gemini and switchable surfactants are summarized. We assess the challenges and opportunities of in-situ and ex-situ soil washing, the mechanisms of surfactant-enhanced soil washing, and the criteria to follow for surfactant selection. Furthermore, we briefly discuss the operational and environmental factors affecting ...

Surfactant Enhanced Washing Of Soil Contaminated With ...

2.4 Wastewater generation from the soil washing process. Wastewater was obtained by washing 700 g of hydrocarbon-contaminated soil with 2.1 L of the washing solution with the previously selected surfactants. The sample was agitated with a Lightnin mixer using a A310 impeller in a cylindrical acrylic container during 2.5 h at

Guidelines for surfactant selection to treat petroleum ...

Sep 03, 2021 · 高达10%返现 · Surfactant soil flushing depollutes the soil by making use of a solution that increases the mobility and solubility of petroleum hydrocarbons (Chattopadhyay and Karthick 2017). Surfactants are delivered into the subsoil through the aqueous phase using an infiltration or injection process to wash the hydrophobic organic compounds from soil and ...

Removing of hydrocarbon contaminated soil via air flushing ...

Aug 02, 2012 · 高达10%返现 · Effect of pulsing air flushing on removed oil. The treatment of contaminated soil was carried out using two steps: (1) injection by single air as marker, (2) washing with surfactant solution followed by washing with many water cycles. The removed oil using pulsing air injection is shown in Table 4.

Joint chemical flushing of soils contaminated with ...

Aug 01, 2005 · Moreover, second pollution of surfactant from washing powder often occurs to the soils (Zhou and Song, 2004). More studies are needed to increase the efficiency of soil flushing technology and decrease the dosage of surfactant and expenses of contaminated soil treatment. 2. Materials and methods2.1. Tested soils

Surfactant-enhanced remediation of contaminated soil: a ...

Jun 01, 2001 · 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 ...

Kinetics ofin situ surfactant soil flushing at moderate ...

高达10%返现 · Economicin situ soil flushing using common surfactants may be a good substitute for exhaustive, pressurized soil washing or bioremediation requiring high energy consumption or laborious technique. Two model surfactants, sodium dodecyl sulfate (SDS) and polyoxyethylene (20) sorbitan monooleate (Tween-80), were chosen as flushing agents. Those surfactant solutions were

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

Combination of surfactant enhanced soil washing and ...

An ex situ soil column washing experiment was performed on a genuinely diesel-contaminated soil. The washing solution was enriched with surfactant Tween 80 at different concentrations, higher than the critical micellar concentration (CMC). The impact of soil washing was evaluated on the hydrocarbons concentration in the leachates collected at ...

Effects of electrokinetics and cationic surfactant ...

The goals of this study were to evaluate the impact of the addition of a cationic surfactant on the movement of hydrocarbons within a contaminated clay soil subjected to electrokinetic treatment. Water-flushing and surfactant-flushing experiments were conducted on one-dimensional soil columns.

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 applications.

Combinations of Surfactant Flushing and Bioremediation for ...

A laboratory study was conducted to evaluate the contaminant removal efficiency of four soil flushing approaches (water flushing, surfactant flushing (Tween-80), bioremediation + water flushing ...

(PDF) Guidelines for surfactant selection to treat ...

hydrocarbon fr actions duri ng soil washing with su rfactants. Besides TPH analysis, the effect of surfactant on the most widely repr esented comp onents fo und in gasoli ne and diesel

Soil flushing of cresols contaminated soil: application of ...

Nov 11, 2014 · 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 carried out by using sodium dodecyl sulfate (SDS) and Triton X-100 surfactant solutions at the concentrations of 0.1%, 0.2%, 0.3%, and 0.4% (W/W).

Kinetics ofin situ surfactant soil flushing at moderate ...

Economicin situ soil flushing using common surfactants may be a good substitute for exhaustive, pressurized soil washing or bioremediation requiring high energy consumption or laborious technique. Two model surfactants, sodium dodecyl sulfate (SDS) and polyoxyethylene (20) sorbitan monooleate (Tween-80), were chosen as flushing agents. Those surfactant solutions were applied to clean ...

Fenton Oxidation of Polycyclic Aromatic Hydrocarbons After ...

Jul 06, 2004 · Surfactant and soil organic matter in spent soil-washing solutions represented significant Fenton's reagent sinks, and would likely be the limiting cost factor in determining the feasibility of this method for a given soil-surfactant system.

Effect of Soil Texture on Remediation of Hydrocarbons ...

In the second flushing set group is carried out on the remaining soil using 300 mL of 3% surfactant solution followed by five water washing cycles and the results are given in Table 4. The results reveal that, the percentage of removed oil was 9.96% from residual oil after first surfactant flushing run and decreased to 4.79% for next run (water ...

(PDF) In Situ flushing of contaminated soils from a ...

In situ flushing has been used to facilitate the removal of sorbed and deposited polycyclic aromatic hydrocarbons (PAHs), total petroleum hydrocarbons (TPHs), and diesel fuel from soil materials (Abdul et al., 1990).The success of this technique can be attributed to the capacity of surfactants, at concentrations above the critic micellar ...

Remediation of hydrocarbon contaminated soil using alkyl ...

The results showed that the soil washing was influenced by bulking agent ratio. The higher the ratio of the bulking agent, the higher the TPH reduction. The highest percentage of TPH removal achieved 92 %, at surfactant concentration of 0.25% and ratio of soil/bulking agent of 25 : 75.

(PDF) Soil Washing, Ozofractionation and Metal ...

Keywords: soil washing, surfactant, flushing solution, ozofractionation, sequestration 1. Introduction Washing contaminated soil with freshwater in agitated mixers to liberate inorganic species, such as lead and zinc, has been widely documented in the last 20 years (Abumaizar & Smith, 1999, Dermont et al., 2008; Mann, 1999); this practice is ...

Joint chemical flushing of soils contaminated with ...

Aug 01, 2005 · The joint salt-flushing could be an optimal method for the cleanup of meadow burozem contaminated with petroleum hydrocarbons under the experimental conditions. Moreover, the amount of surfactant remained in the two washed soils after the joint acid-flushing and the joint-salt-flushing

Enhanced Soil Flushing for Simultaneous Removal of PAHs ...

Jul 03, 2011 · Polycyclic aromatic hydrocarbons (PAHs) and heavy metals are environmental concerns and must be removed to acceptable levels. This paper evaluates different flushing agents to enhance the remediation of soil contaminated with PAHs and heavy metals at

Combinations of Surfactant Flushing and Bioremediation for ...

Apr 23, 2016 · A combination of surfactant flushing and bioremediation had the highest TPH removal efficiency (77.1% for sandy loam and 46.9% for silt loam) among the four flushing treatments. Overall, combining surfactant flushing with bioremediation appears to be a promising remediation strategy for sites contaminated by fuel hydrocarbons.

(PDF) Combination of surfactant enhanced soil washing and ...

Combination of surfactant enhanced soil washing and electro-Fenton process for the treatment of soils contaminated by petroleum hydrocarbons. Journal of environmental management, 2015. Eric van Hullebusch. ... Soil Washing/Flushing Treatments of Organic Pollutants Enhanced by Cyclodextrins and Integrated Treatments: State of the Art ...

Joint chemical flushing of soils contaminated with ...

Aug 01, 2005 · The joint salt-flushing could be an optimal method for the cleanup of meadow burozem contaminated with petroleum hydrocarbons under the experimental conditions. Moreover, the amount of surfactant remained in the two washed soils after the joint acid-flushing and the joint-salt-flushing

Optimization of Surfactant-Aided Remediation of ...

Soil matrices contaminated with polycyclic aromatic hydrocarbons (PAHs) abound at the sites of coke-oven gas plants, refineries, and many other major chemical industries. The removal of PAHs from soil using pure water, via soil washing for (ex situ) or soil flushing (in situ), is quite ineffective due to their low solubility and hydrophobicity.

Electrochemically reversible foam enhanced flushing for ...

Here, we prepared a electrochemically reversible ferrocene surfactant FcCH 2 N + (CH 3)C 12 H 25 (Fc12), then investigated the foaming ability and foam stability of Fc12 under its reduced (active state) and oxidation (inactive state) states and explored the flushing efficiency of reduced Fc12 foam for PAHs-contaminated soil and the recovery ...

Remediation of hydrocarbon contaminated soil using alkyl ...

The results showed that the soil washing was influenced by bulking agent ratio. The higher the ratio of the bulking agent, the higher the TPH reduction. The highest percentage of TPH removal achieved 92 %, at surfactant concentration of 0.25% and ratio of soil/bulking agent of 25 : 75.

THE USE OF MICROEMULSION AND FLUSHING SOLUTIONS

extraction, soil washing, soil flushing, and electrokinetic soil remediation (Virkutyte et al., 2002). Soil flushing by surfactant solutions to remove NAPLs is a technique currently used (Ouyang et al., 1995). Soil washing process is a physical process of pollutant removal accomplished through the rinsing of soil with water, surfactants ...

Enhanced Soil Flushing for Simultaneous Removal of PAHs ...

Jul 03, 2011 · Polycyclic aromatic hydrocarbons (PAHs) and heavy metals are environmental concerns and must be removed to acceptable levels. This paper evaluates different flushing agents to enhance the remediation of soil contaminated with PAHs and heavy metals at

Petroleum Hydrocarbon Remediation Technologies

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

Polychlorinated biphenyls-contaminated soil washing with ...

Surfactants can be adsorbed on the soil matrix (depending on their ionic structure), thereby reducing the efficiency of the removal process. The key of success of electrokinetic soil flushing ...

(PDF) Surfactant-Enhanced Washing of Soils Contaminated ...

Surfactant-Enhanced Washing of Soils Contaminated with Wasted-Automotive Oils and the Quality of the Produced Wastewater. ... Characterization and treatability of a contaminated soil from an oil exploration zone. By Erick Bandala. In Situ flushing of contaminated soils from a refinery: Organic compounds and metal removals.

Surfactant-Enhanced Mobilization and Biodegradation of ...

Aug 28, 1997 · The bioremediation of soil contaminated with polycyclic aromatic hydrocarbons (PAH) often is limited by a low bioavailability of the contaminants. The effect of two nonionic surfactants of the alkylphenolethoxylate type, Arkopal N-300 and Sapogenat T-300, on bioavailability of PAH in manufactured gas plant soil was evaluated in soil columns percolated by recirculating flushing water.

Enhanced Soil Flushing for Simultaneous Removal of PAHs ...

Jul 03, 2011 · Polycyclic aromatic hydrocarbons (PAHs) and heavy metals are environmental concerns and must be removed to acceptable levels. This paper evaluates different flushing agents to enhance the remediation of soil contaminated with PAHs and heavy metals at

INDOT Guidance Document for - FRTR

and removal. Soil flushing uses surfactant or cosolvent as a carrier. A schematic of in-situ soil flushing system is shown in Figure 1. Figure 1. Schematic of an In-Situ Flushing System (Roote, 1998) The flushing process begins with the drilling of injection and extraction wells into the ground where the contamination has been found.