RT Journal Article
T1 Enhancing hexachlorocyclohexane solubility with surfactants and ionic liquids
A1 Chaos Carballo, María Zoe
A1 Balseiro Romero, María
A1 Calviño-Vázquez, Beatriz
A1 Somoza Cerviño, Alba
A1 Soto Campos, Ana María
A1 Monterroso Martínez, María del Carmen
K1 Hexachlorocyclohexane
K1 Organic contaminants
K1 Solubilisation
K1 Surfactants
K1 Ionic liquids
AB Surfactant-enhanced remediation of soil can increase the solubility of hydrophobic organic contaminants in water and improve their removal. In this study, the effect of 24 traditional surfactants and surface-active ionic liquids (SAILs) on the solubility of hexachlorocyclohexane isomers (α-, β-, γ-, δ-HCH) was evaluated in batch-type experiments. The combination of two different proportions of a cationic SAIL and an anionic surfactant was also assessed. The solubilisation capacity of the surfactant varied depending on its concentration and structure, but also the HCH isomer considered. In general, the anionic surfactants yielded the best results, increasing solubilisation of HCH up to 2.4 times compared to the control (pure water). α-HCH and γ-HCH isomers were more easily solubilised than β-HCH and δ-HCH regardless of the surfactant’s type. The main advantage of ionic liquids being their tunability, some clues are given for formulating surfactants to enhance the solubilisation of HCH. The combination of a traditional surfactant and a SAIL influenced the critical micelle concentration, but not the solubilisation of the contaminant. Further studies on the use of blends for this application are required. The increase of solubility achieved with the studied surfactants encourages their application in washing HCH-contaminated soils through solubility enhancement.
PB Elsevier
SN 0167-7322
YR 2024
FD 2024
LK http://hdl.handle.net/10347/33703
UL http://hdl.handle.net/10347/33703
LA eng
NO Journal of Molecular Liquids Volume 399, 1 April 2024, 124329
NO This work was supported by the Governments of Spain (PID2019-107879RB-100) and Galicia (GRC-ED431C 2022/40), co-funded by ERDF (UE).
DS Minerva
RD 24 abr 2026