Next Article in Journal
Microplastic Fibers Released by Textile Laundry: A New Analytical Approach for the Determination of Fibers in Effluents
Previous Article in Journal
Precipitation and Flow Variations in the Lancang–Mekong River Basin and the Implications of Monsoon Fluctuation and Regional Topography
Open AccessCommunication

In Situ Formation of Ionic Liquid by Metathesis Reaction for the Rapid Removal of Bisphenol A from Aqueous Solutions

University Centre of Defence at the Spanish Air Force Academy, MDE-UPCT, C/Coronel López Peña s/n, Santiago de la Ribera, 30720 Murcia, Spain
*
Author to whom correspondence should be addressed.
Water 2019, 11(10), 2087; https://doi.org/10.3390/w11102087
Received: 18 September 2019 / Revised: 30 September 2019 / Accepted: 3 October 2019 / Published: 7 October 2019
(This article belongs to the Section Water and Wastewater Treatment)
In this work we present a rapid and easy method to remove the totality of bisphenol A from aqueous solutions using ionic liquid (IL). Dispersive liquid–liquid microextraction is employed. The IL 1-octyl-3-methylimidazolium bis((trifluoromethane)sulfonyl)imide ([C8C1im] [NTf2]) is formed in situ because of the mixture of 1-octyl-3-methylimidazolium chloride ([C8C1im]Cl) and lithium bis(trifluoromethanesulfonyl)imide (Li[NTf2]) aqueous solutions. A cloud of microdroplets of IL formed by the dispersion generated through the precursors metathesis reaction allows the rapid and total extraction of bisphenol A (BPA). After centrifugation, the formed IL phase is deposited at the bottom of the flask and the total amount of BPA is extracted in the sedimented phase. The volume of IL is very low, in the order of microliters, which enables us to remove all the BPA from the solution. The technique studied is highly efficient, cost-effective, and presents less environmental impact than other extraction techniques, thus becoming an outstanding alternative to the most commonly used methods. BPA concentration is determined by high performance liquid chromatography by injecting the IL phase directly. An extraction kinetic model for the kinetic profile has been tested for this method, which allows to infer the ideal experimental conditions to execute the extraction method. View Full-Text
Keywords: bisphenol A; extraction kinetic studies; high performance liquid chromatography; ionic liquid; mutagenic agent; removal bisphenol A; extraction kinetic studies; high performance liquid chromatography; ionic liquid; mutagenic agent; removal
Show Figures

Graphical abstract

MDPI and ACS Style

Vicente-Martínez, Y.; Caravaca, M.; Soto-Meca, A.; De Francisco-Ortíz, Ó.; Fernández-López, C. In Situ Formation of Ionic Liquid by Metathesis Reaction for the Rapid Removal of Bisphenol A from Aqueous Solutions. Water 2019, 11, 2087.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop