Removal of bisphenol A from aqueous medium using molecularly surface imprinted microbeads

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Bayramoglu G., Arica M. Y., Liman G., ÇELİKBIÇAK Ö., SALİH B.

CHEMOSPHERE, cilt.150, ss.275-284, 2016 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 150
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.chemosphere.2016.02.040
  • Dergi Adı: CHEMOSPHERE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.275-284
  • Anahtar Kelimeler: Molecular imprinting, Bisphenol A, Molecular recognition, Removal, Adsorption, LC-MS, SOLID-PHASE EXTRACTION, POLYMER MICROSPHERES, HYDROPHOBIC LIGAND, SALICYLIC-ACID, WATER SAMPLES, ADSORPTION, NANOPARTICLES, SEPARATION, ADSORBENT, AMIDOXIME
  • Hacettepe Üniversitesi Adresli: Evet

Özet

The aim of this study is to prepare bisphenol A (BPA) imprinted polymers, which can be used for the selective removal of BPA from aqueous medium. The BPA-imprinted (MIP) and non-imprinted (NIP) microbeads were synthesized, and characterized by Zeta-sizer, FTIR, SEM and BET method. Bisphenol A was determined in solutions using liquid chromatography-mass spectroscopy (LC-MS). The effect of initial concentration of BPA, the adsorption rate and the pH of the medium on the capacity of BPA-imprinting polymer were studied. Adsorption capacity of BPA was affected by the amount of the incorporated functional monomer in the polymer network. BPA adsorption capacity of MIP-3 and NIP microbeads from aqueous medium was estimated as 76.7 and 59.9 mg g(-1), respectively. The binding efficiencies of BPA-MIP-3 microbeads for different phenolic compounds (i.e., BPA with p-toluidine, 4-aminophenol or 2-naphthol) were explored at binary solutions, and the binding capacities of BPA-imprinted microbeads were found to be 2.79 x 10(-1), 2.39 x 10(-1), 7.59 x 10(-2) and 5.48 x 10(-2) mmol g(-1) microbeads, respectively. The satisfactory results demonstrated that the obtained BPA-MIP microbeads showed an appreciable binding specificity toward BPA than similar structural compounds in the aqueous medium. Moreover, the reusability of BPA-MIP-3 microbeads was tested for several times and no significant loss in adsorption capacity was observed. Finally, the binary and multi component systems results show that MIP-3 microbeads have special recognition selectivity and excellent binding affinity for template molecule "BPA". (C) 2016 Elsevier Ltd. All rights reserved.

The aim of this study is to prepare bisphenol A (BPA) imprinted polymers, which can be used for the selective removal of BPA from aqueous medium. The BPA-imprinted (MIP) and non-imprinted (NIP) microbeads were synthesized, and characterized by Zeta-sizer, FTIR, SEM and BET method. Bisphenol A was determined in solutions using liquid chromatography-mass spectroscopy (LC-MS). The effect of initial concentration of BPA, the adsorption rate and the pH of the medium on the capacity of BPA- imprinting polymer were studied. Adsorption capacity of BPA was affected by the amount of the incorporated functional monomer in the polymer network. BPA adsorption capacity of MIP-3 and NIP microbeads from aqueous medium was estimated as 76.7 and 59.9 mg g 1, respectively. The binding efficiencies of BPA-MIP-3 microbeads for different phenolic compounds (i.e., BPA with p-toluidine, 4- aminophenol or 2-naphthol) were explored at binary solutions, and the binding capacities of BPA- imprinted microbeads were found to be 2.79 10 1, 2.39 10 1, 7.59 10 2 and 5.48 10 2 mmol g 1 microbeads, respectively. The satisfactory results demonstrated that the obtained BPA-MIP microbeads showed an appreciable binding specificity toward BPA than similar structural compounds in the aqueous medium. Moreover, the reusability of BPA-MIP-3 microbeads was tested for several times and no significant loss in adsorption capacity was observed. Finally, the binary and multi- component systems results show that MIP-3 microbeads have special recognition selectivity and excellent binding affinity for template molecule “BPA”.