| Title: | Effect of (bio)surfactant type and concentration on the gas-liquid equilibrium partitioning of hydrophobic volatile organic compounds |
| Author(s): | Lamprea Pineda PA; Demeestere K; Sabbe M; Bruneel J; Van Langenhove H; Walgraeve C; |
| Address: | "Research group EnVOC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent 9000, Belgium. Electronic address: PaulaAlejandra.LampreaPineda@UGent.be. Research group EnVOC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent 9000, Belgium. Electronic address: Kristof.Demeestere@UGent.be. Research group EnVOC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent 9000, Belgium. Electronic address: Max.sabbe@UGent.be. Trevi nv, Air Division, Dulle-Grietlaan 17/1, Ghent 9050, Belgium. Electronic address: JBruneel@trevi-env.com. Research group EnVOC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent 9000, Belgium. Electronic address: Herman.VanLangenhove@UGent.be. Research group EnVOC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, Ghent 9000, Belgium. Electronic address: Christophe.Walgraeve@UGent.be" |
| DOI: | 10.1016/j.jhazmat.2022.130320 |
| ISSN/ISBN: | 1873-3336 (Electronic) 0304-3894 (Linking) |
| Abstract: | "The biological removal of hydrophobic volatile organic compounds (VOCs) is limited by their low water solubility and, therefore, low bioavailability. The addition of surfactants is a promising strategy, but to gain understanding and broaden its applicability, its effect on the solubility of hydrophobic VOCs should be investigated. This study evaluates the effect of 2 synthetic surfactants (sodium dodecyl sulfate (SDS) and Tween 80) and 3 biological surfactants (surfactin, rhamnolipid and saponin) on the gas-to-liquid equilibrium partitioning coefficient (K(GL)) of 7 hydrophobic VOCs at different critical micelle concentrations (CMC). For all VOCs, a decrease in their K(GL) was observed when a (bio)surfactant was added at 1 and 3 CMC. The highest decrease in K(GL) (71 - 96 %) was observed for all compounds when SDS was added at 3 CMC, whereas the smallest effect was noticed when Tween 80 or surfactin (5.1 - 75 %) were added at both concentrations. The results are explained in terms of the (bio)surfactant and VOC physical-chemical properties (e.g. CMC and polarity). This is the first study evaluating the effect of biological surfactants on K(GL). These fundamental data are essential to improve the design and modeling of air treatment systems using (bio)surfactants" |
| Keywords: | Surface-Active Agents/chemistry *Volatile Organic Compounds/chemistry Polysorbates Sodium Dodecyl Sulfate/chemistry Micelles *Pulmonary Surfactants (bio)surfactants Cmc Gas treatment Gas-liquid partitioning coefficient Hydrophobic VOCs; |
| Notes: | "MedlineLamprea Pineda, Paula Alejandra Demeestere, Kristof Sabbe, Max Bruneel, Joren Van Langenhove, Herman Walgraeve, Christophe eng Research Support, Non-U.S. Gov't Netherlands 2022/11/14 J Hazard Mater. 2023 Feb 5; 443(Pt B):130320. doi: 10.1016/j.jhazmat.2022.130320. Epub 2022 Nov 2" |
