Simultaneous removal of phenanthrene and cadmium from contaminated soils by saponin, a plant-derived biosurfactant
| Autor: | Wenjun Zhou, Lizhong Zhu, Saisai Song |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
inorganic chemicals
Octoxynol Environmental remediation Health Toxicology and Mutagenesis Saponin chemistry.chemical_element Toxicology complex mixtures Citric Acid Surface-Active Agents chemistry.chemical_compound parasitic diseases Soil Pollutants Organic chemistry Environmental Restoration and Remediation chemistry.chemical_classification Cadmium Ecology General Medicine Human decontamination Phenanthrenes Saponins Phenanthrene musculoskeletal system Pollution Soil contamination carbohydrates (lipids) Solubility chemistry Environmental chemistry Soil water Adsorption Citric acid |
| Zdroj: | Environmental Pollution. 156:1368-1370 |
| ISSN: | 0269-7491 |
| DOI: | 10.1016/j.envpol.2008.06.018 |
| Popis: | Batch experiments were conducted to evaluate the performance of saponin, a plant-derived biosurfactant, for simultaneously removing phenanthrene and cadmium from the combined contaminated soils. Results showed that phenanthrene was desorbed from the contaminated soils by saponin with the partition of phenanthrene into surfactant micelle, meanwhile cadmium was effectively removed from the contaminated soils by the complexation of cadmium with the external carboxyl groups of saponin micelle. The efficiencies of saponin for the removal of phenanthrene and cadmium from the contaminated soils were greater than that of Triton X100 and citric acid, respectively. At concentration of 3750 mg/L, saponin has a removal rate of 87.7% and 76.2% of cadmium and phenanthrene, respectively, from the combined contaminated soil. The removals of cadmium and phenanthrene from the soils were not obviously constrained each other. Thus, saponin has the potential for the removal of heavy metal and PAHs from the combined contaminated soils. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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