Highly efficient removal of bisphenols from aqueous solution using environmental-sensitive microgel. Issue 1 (February 2021)

• Record Type: Journal Article
• Authors: Kubiak, Anna; Maćkiewicz, Marcin; Biesaga, Magdalena; Karbarz, Marcin
• Is Part Of: Journal of environmental chemical engineering. Volume 9:Issue 1(2021)
• Publication Date: 2021-02
• Subjects: Microgel -- Bisphenols -- Sorption -- HPLC analysis; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2020.104947
• Languages: English
• ISSNs: 2213-2929

Abstract

Abstract: A temperature and pH sensitive microgel was synthesized and applied for sorption of five bisphenols (bisphenol A (BPA), bisphenol B (BPB), bisphenol E (BPE), bisphenol F (BPF) and bisphenol S (BPS)) from aqueous solutions. The microgel was synthesized from methacrylate derivatives of poly(ethylene glycol) and acrylic acid using the precipitation polymerization method. Liquid chromatography with UV detection (LC-UV) was used for the quantification of bisphenols. The microgel appeared to be a satisfactory sorbent. The maximum experimental adsorption capacities obtained for all five bisphenols were between two values: 55 mg g −1 and 160 mg g −1 . The sequence of bisphenols absorption was the following BPS<BFP<BPE<BPA<BPB. Kinetics of sorption, effects of pH and temperature on sorption capacity were also investigated. The experimental data were well described by the pseudo-second order kinetic model and fitted well the adsorption Langmuir model. Using the analysis of the Langmuir model we reached the maximum sorption capacity of 70 mg g −1 to 210 mg g −1 . The microgel can be regenerated effectively using an organic solvent; the adsorption capacity remained constant after multiple times of gel uses. The proposed microgel is a promising sorbent for reasonably fast adsorption of bisphenols (BPs) and might be used for the determination of very low concentrations of BPs present in water. Graphical Abstract: ga1 Highlights: Temperature and pH sensitive microgel as sorbent of biphenols was synthesized. Adsorption followed Langmuir isotherm and pseudo second-order kinetic equation. Adsorption capacities for investigated bisphenols were in the range of 55–160 mg/g. Microgel can be regenerated effectively using an organic solvent.