Application of surfactant solutions and colloidal gas aphron suspensions in flushing naphthalene from a contaminated soil matrix
| Autor: | Dipak Roy, S. Kongara, Kalliat T. Valsaraj |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
endocrine system
Environmental Engineering Chromatography Volatilisation Chemistry Health Toxicology and Mutagenesis Human decontamination Pollution Soil contamination Suspension (chemistry) Matrix (chemical analysis) Colloid chemistry.chemical_compound Pulmonary surfactant Environmental Chemistry Waste Management and Disposal Naphthalene |
| Zdroj: | Journal of Hazardous Materials. 42:247-263 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/0304-3894(95)00018-p |
| Popis: | The applicability of conventional surfactant solutions and colloidal gas aphron (CGA) suspensions to remove naphthalene from a contaminated soil matrix was investigated. Laboratory studies were conducted to evaluate the relative suitability of nonionic, cationic and anionic surfactants in removing naphthalene from the soil. Nonionic surfactant was found to be more efficient than the ionic surfactants in removing napthalene from contaminated soil matrix in batch experiments and was selected for further flushing studies. The presence of surfactant reduced the volatilization of naphthalene. Micellar solubilization appears to be the primary mechanism of removal using both surfactant solutions and CGA suspensions. Increasing the concentration of the surfactant solution enhanced the percent removal of naphthalene. Using a CGA suspension as a flushing medium may result in channeling and pore clogging in the soil matrix, thereby affecting the overall efficiency of the process. |
| Databáze: | OpenAIRE |
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