RT Journal Article
T1 Non-Ionic Surfactant Recovery in Surfactant Enhancement Aquifer Remediation Effluent with Chlorobenzenes by Semivolatile Chlorinated Organic Compounds Volatilization
A1 Sáez González, Patricia
A1 García Cervilla, Raúl
A1 Romero, Arturo
A1 Lorenzo Fernández, David
AB Surfactant enhanced aquifer remediation is a common treatment to remediate polluted sites with the inconvenience that the effluent generated must be treated. In this work, a complex mixture of chlorobenzene and dichlorobenzenes in a non-ionic surfactant emulsion has been carried out by volatilization. Since this techhnique is strongly affected by the presence of the surfactant, modifying the vapour pressure, P0v,��0, and activity coefficient, γ�, a correlation between P0vjγj���0�� and surfactant concentration and temperature was proposed for each compound, employing the Surface Response Methodology (RSM). Volatilization experiments were carried out at different temperatures and gas flow rates. A good agreement between experimental and predicted remaining SVCOCs during the air stripping process was obtained, validating the thermodynamic parameters obtained with RSM. Regarding the results of volatilization, at 60 °C 80% of SVCOCs were removed after 6 h, and the surfactant capacity was almost completely recovered so the solution can be recycled in soil flushing.
PB MDPI
SN 1660-4601
YR 2022
FD 2022
LK https://hdl.handle.net/20.500.14352/72288
UL https://hdl.handle.net/20.500.14352/72288
LA eng
NO Comunidad de Madrid
NO Ministerio de Economía, Industria y Competitividad
NO EU Life Program
NO Ministerio de Economía, Industria y Competitividad
DS Docta Complutense
RD 4 abr 2025