Recent advancement in enhanced soil flushing for …
Remediation of persistent organic pollutants in soil especially total petroleum hydrocarbon (TPH) is of global concern due to its toxicity and health implications. Soil …
Fenton Oxidation of Polycyclic Aromatic Hydrocarbons After Surfactant …
The feasibility of using a combination of two well-studied technologies - soil washing and Fenton oxidation - to remove polycyclic aromatic hydrocarbons (PAH) from soil and subsequently destroy them in the resulting waste water solution was investigated. Three well-characterized New Jersey soils, representing a wide range of organic carbon content, were …
Remediation of soils contaminated with total petroleum hydrocarbons …
ABSTRACT Soil fulfils vital functions for life on Earth and so, just like water and air, its protection from all sources of contamination is a major concern. However, the extensive use of petroleum derived products, either as energy sources or as commodities, leads to important environmental liabilities. Ex situ soil washing is a technology to concentrate contaminants, …
In-Situ Petroleum Hydrocarbons Contaminated Soils
Cationic, anionic and nonionic surfactants are particularly used for soil washing or flushing. They contain both hydrophobic and hydrophilic portions, making them ideal for solubilization of ...
Hydrocarbon Soil Washing & Surfactant Flushing
SOIL FLUSHING REMEDIATION ART Engineering, LLC. Project Description. ART was contracted to provide soil washing treatability studies, design of a soil washing process, plant specifications, plant start-up support and personnel training for treatment of 50,000 tons hydrocarbon contaminated soil at former hydrocarbon storage facility (tank farm) in LEZO …
Combinations of Surfactant Flushing and
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.
'Emulsion locks' for the containment of hydrocarbons during surfactant …
Hydrocarbon removal from polluted soil using surfactant flushing relies on the emulsification of hydrocarbons in water. Dynamic interfacial tension data show that SDS and CPB adsorbed at the oil-water interface, lowering the interfacial tension (Fig. 1).The decrease of the interfacial tension between the toluene-water interface with SDS is in agreement with …
Enhanced soil flushing of phenanthrene by anionic-nonionic …
Semantic Scholar extracted view of "Enhanced soil flushing of phenanthrene by anionic-nonionic mixed surfactant." ... Overall performance considering both soil washing and surfactant recovery steps is apposite when an TX100:SDS mass ratio of 8:2 at 3 g/L is used and removal efficiencies for PHE-contaminated soil close to the individual higher ...
Recent advancement in enhanced soil flushing for …
Soil pollution with crude oil and other petroleum-based hydrocarbons occurs during oil exploration, 2022). In recent years, rapid urbanization and industriali-to excessive crude and …
Soil Washing/Flushing Treatments of Organic Pollutants …
As an alternative to traditional pump-and-treat technologies, soil washing and soil flushing are conceivable and efficient approaches. Extracting agents such as cyclodextrins are compared to traditional surfactants, cosolvents, and less conventional agents. Ability of cyclodextrin derivatives to form a ternary pollutant-cyclodextrin-iron ...
Enhanced remediation of hydrocarbons contaminated soil …
A sequential process of electrokinetic soil flushing (EKSF) and landfarming treatment was demonstrated to remove hydrocarbons from clay soil. Surfactant concentration was the independent variable with a concentration of 2×, 4×, 6×, and 8× of critical micelle concentration (CMC), respectively. ... This condition was carried out by washing ...
Combinations of Surfactant Flushing and
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 …
Removing of hydrocarbon contaminated soil via air flushing …
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. Therefore, coarse sand …
In Situ Flushing
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 ...
[PDF] Soil flushing of cresols contaminated soil: application …
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).
In-situ petroleum hydrocarbons contaminated soils …
Results showed that the use of both surfactants allows to reach high removal efficiency (∼50% for Tween 80 and ∼70% for SDBS) of hydrocarbons from soil and that either the surfactant concentration and the contact time between surfactant and contaminant affected the extraction performance.
Removing of hydrocarbon contaminated soil via air flushing …
Surfactants enhanced air sparging actually acts to displace the organic contaminant entrapped in soil pores. In this work, a comparison study was carried out …
Surfactant-enhanced remediation of oil-contaminated soil …
DOI: 10.1016/j.scitotenv.2020.144142 Corpus ID: 228101021; Surfactant-enhanced remediation of oil-contaminated soil and groundwater: A review. @article{Liu2020SurfactantenhancedRO, title={Surfactant-enhanced remediation of oil-contaminated soil and groundwater: A review.}, author={Jian-Wu Liu and Kun-Hao Wei and Shaomin Xu and Jun Cui and Jie Ma and Xiaolong …
Guidelines for surfactant selection to treat petroleum hydrocarbon …
The results show a high level of gasoline and diesel fuel hydrocarbon range. The properties of the soil samples are listed in Table 3. The soils present heterogeneous characteristics. Effect of soil texture on washing surfactant Petroleum hydrocarbons in the soil were analyzed after washing three Andalusian soils using four surfactants.
Remediation of soils contaminated with total …
Washing methods, such as soil flushing and soil washing, have shown satisfactory results in the removal of hydrocarbon contaminants from soils with the use of surfactants ... The influence of clay minerals and …
Surfactant enhanced washing of soil contaminated with …
PDF | On Jan 1, 2013, Evelyn Zamudio and others published Surfactant enhanced washing of soil contaminated with petroleum hydrocarbons and treatment of produced wastewaters using a biofilter ...
Guidelines for surfactant selection to treat petroleum …
Several soil components adsorb surfactant monomers be-causeoftheirproperties;thus,sorptionofsurfactant–soilisan important parameter for surfactant soil flushing. Surfactant efficiency for solubilizing petroleum hydrocarbons decreases when the soil adsorbs a significant amount of it. The surfactant–soil sorption depends on soil texture …
Simultaneous removal of polycyclic aromatic hydrocarbons …
Soil washing and flushing technologies enhanced with chemical agents are widely used in the remediation practice for single type of pollutant (i.e., either heavy metals or organic contaminants ...
Mechanisms, Applications, and Risk Analysis of Surfactant …
Surfactant-Enhanced Remediation is increasingly being recognized for its exceptional effectiveness in eliminating non-aqueous phase liquids in soil. A comprehensive …
Particle-size-based elution of petroleum hydrocarbon contaminated soil
In the soil washing approach, contaminated soil is washed and scrubbed with a liquid, such as surfactants or additives, to obtain and separate clean soil from the polluted soil and flush water ...
The influence of clay minerals and surfactants on hydrocarbon …
Therefore, more cases that use anionic surfactants, rather than cationic surfactants, for soil washing or aquifer flushing have been reported [32]. Especially, washing process with surfactant gave stable emulsions that could not be broken by salt addition, such as Triton X-100 [40]. Nonionic surfactants show a greater ability to enhance the ...
Guidelines for surfactant selection to treat petroleum hydrocarbon …
Surfactant soil flushing is a time-efficient and versatile in situ remediation technology (Karthick et al. 2019b; Mao et al. 2015). 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 ...
Removal of hydrocarbons from heterogenous soil using electrokinetics
Removal of hydrocarbons from sediments could be achieved using various techniques such as hydraulic flushing aided by surfactants, which works well for sand and gravel but not as effective for finer textured media, such as clay. ... Hydrocarbon analysis. Soil sample from the experimental block was mixed with anhydrous sodium sulfate to remove ...
Use of surfactants for the remediation of contaminated soils: A …
Therefore, more cases that use anionic surfactants, instead of cationic surfactants, for soil washing or aquifer flushing were reported. In Table 2, cases of using ionic surfactants for the remediation of site-specific contaminated soils (laboratory-scale, field demonstration and full-scale) after year 2000 are summarized. It is noted that ...
Remediation of soils contaminated with total petroleum hydrocarbons …
This work focuses on the optimization of ex situ soil washing process using surfactants, introducing an evaluation of the washing solution recycling and its after use safe disposal, promoting the reduction of raw materials, energy and water resources costs. Two surfactants, sodium dodecyl sulphate (SDS) and polyoxyethylene sorbitan monooleate ...