@conference{
author = "Mušović, Jasmina and Marić, Slađana and Jocić, Ana and Milićević, Jelena and Stanković, Dalibor and Dimitrijević, Aleksandra",
year = "2023",
abstract = "Temperature- and pH-responsive ionic liquid-based aqueous biphasic systems (IL-ABS) have been proposed as a viable and sustainable extraction/separation processes. Combining a thermosensitive polymer (such as polypropylene glycol-400, PPG400) and a pH-sensitive IL (such as choline-acetate, [Ch][Ac] as the phase-forming agents, we have tried to develop an efficient extraction platform for removing the pollutants from wastewater, namely herbicide dicamba (DIC) and insecticide deltamethrin (DLM). First, the ABS ternary phase diagrams are determined at different temperatures (25, 35 and 45°C) and pH values (2, 5, 6, and 7). The operational extraction composition was chosen to fit within the biphase region of each ABS, namely 15 wt% of IL and 40 wt% of polymer. Subsequently, extraction parameters were determined for each target compound (using high-performance chromatography) at different temperatures and pH values. Initially, polar pesticide dicamba migrated preferentially toward the IL-rich phase while deltamethrin showed the opposite direction at room temperature and pH 7. Obtained extraction efficiencies were about 93% and 23% for DLM and DIC, respectively, toward polymer-rich phase. The ability to simultaneously respond to two stimuli, in this case, temperature and pH, allowed us to obtain highly efficient extraction by changing stimuli-inducing parameters. At pH=2 and T=25°C extraction efficiencies higher than 96% for DLM and 83% for DIC were acquired. Therefore, by adjusting the applied stimuli, ABS can improve the performance resulting in the successful removal of pesticides from the aqueous phase, regardless of their polarity. This remarkable capability makes these ABSs highly appealing for designing wastewater treatment processes.",
publisher = "University of Belgrade : Faculty of Chemistry",
journal = "YISAC 2023 : 28th Young Investigators' Seminar on Analytical Chemistry : the book of abstracts",
title = "Responsive Ionic Liquid-Based Aqueous Biphasic Systems as Efficient Extraction Platform for Sustainable Removal of Pesticides from Wastewater",
pages = "31-31",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11961"
}