Remediación de suelos contaminados con aceite de motor mediante tensioactivos altamente biodegradables
- Moya Ramírez, Ignacio
- García Román, Miguel
- Henares Jiménez, María
- Jurado Alameda, Encarnación
- Altmajer Vaz, Deisi
ISSN: 0718-8706
Year of publication: 2014
Volume: 5
Issue: 2
Pages: 21-29
Type: Article
More publications in: Avances en Ciencias e Ingeniería
Abstract
The remediation of a sandy soil contaminated with motor oil was studied by applying two different washing procedures: one discontinuous and the other continuous. In addition the capacity of three highly biodegradable surfactants, two synthetic (Glucopon 600 and Findet 1214N/23) and a biosurfactant from Bacillus subtilis, to enhance oil removal was tested. The results obtained with the continuous procedure were much better than those achieved with the discontinuous one, even in experiments conducted with distilled water. Both the addition of surfactants and the rise in temperature significantly increased the removal of the pollutant in experiments conducted with the discontinuous procedure, but the biosurfactant showed a higher capacity for soil remediation than the synthetic surfactants at concentrations close to its CMC. Conversely, when the continuous method was used, surfactant concentration seems to have a lower effect on motor oil removal, at least below the CMC.