Volume 47 - Issue 3 - 249 - 258

Bisphenol A Removal From Aqueous Phase via Polymeric Microbeads

Polimerik Mikroküreler ile Bisfenol A Uzaklaştırılması

The main objective of this study is to investigate the effectiveness of poly(divinylbenzene-N-methacryloyl-L-tryptophan methyl ester) [poly(DVB-MATrp)] microbeads (average diameter = 150-200 μm) to remove bisphenol A (BPA) from aqueous phase. The poly(DVB-MATrp) microbeads were synthesized by copolymerizing N-methacryloyl-L-tryptophan methyl ester (MATrp) in the presence of divinylbenzene (DVB). The poly(DVB-MATrp) beads were characterized by Fourier transform infrared spectroscopy (FTIR), elemental analysis, scanning electron microscopy (SEM) and swelling test. The efficiency of poly(DVB-MATrp) microbeads for adsorption of BPA from aqueous medium was evaluated by investigating the effects of pH, initial concentration, contact time and temperature. The adsorption capacity of the microbeads was determined to be 171.1 mg/g at pH 7.0, 25°C. The Langmuir and Freundlich isotherm models were used to fit adsorption data. The adsorption process obeyed pseudo-second-order kinetic model. The prepared microbeads can be repeatedly used for adsorption of BPA without a significant change in the adsorption capacity.

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