2026-06-27T10:32:19Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/722882024-10-03T13:54:36Zcom_20.500.14352_14col_20.500.14352_15

Sáez González, Patricia García Cervilla, Raúl Romero, Arturo Lorenzo Fernández, David 2023-06-22T11:17:34Z 2023-06-22T11:17:34Z 2022 1660-4601 10.3390/ijerph19127547 https://hdl.handle.net/20.500.14352/72288 https://doi.org/10.3390/ijerph19127547 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. eng https://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España Non-Ionic Surfactant Recovery in Surfactant Enhancement Aquifer Remediation Effluent with Chlorobenzenes by Semivolatile Chlorinated Organic Compounds Volatilization journal article