Soil washing potential of a natural surfactant

Article Abstract:

Natural surfactants derived from plants can be used as alternatives to synthetic surfactants in soil remediation. This was affirmed by results of an evaluation of the soil washing potential of a plant-based natural surfactant obtained from the fruit pericarp of Sapindus mukurossi. Using the natural surfactant to flush hexachlorobenzene from soil columns, it was found that HCB recoveries after 12 pore volumes of flushing with 0.5 and 1% natural surfactant solutions were 20 and 100 times higher than that recovered by water flooding.

Equipment and supplies, Soil disinfection

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Separation and characterization of petroleum hydrocarbons and surfactant in Orimulsion dispersion samples

Article Abstract:

An approach which combines membrane/filtration, capillary gas chromatography and high-performance liquid chromatography was developed and used for the separation and characterization of petroleum hydrocarbons and surfactant in Orimulsion. Results reveal that the saturates are predominantly composed of aliphatic hydrocarbons and that Orimulsion does not contain benzene, toluene, ethylbenzene and xylene and lighter alkylbenzenes. The surfactant was identified as polyethoxylated nonylphenol, with a concentration of about 0.5.

Hydrocarbon research, Orimulsion

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Risk Assessment for Polycyclic Aromatic Hydrocarbon NAPLs Using Component Fractions

Article Abstract:

Researchers at the Total Petroleum Hydrocarbon Criteria Working Group developed a fraction approach for characterizing PAH NAPLs that can be used to predict NAPL compositional dynamics. Charts, figures, tables, graphs accompany the article.

United States, Pollutants produced & recycled, Risk assessment, Innovations, Brief Article, Chemical industry, Identification and classification, Polycyclic aromatic hydrocarbons, Total Petroleum Hydrocarbon Criteria Working Group

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