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

Area of Science:

• Environmental Chemistry
• Polymer Science
• Analytical Chemistry

Background:

• Bisphenol A (BPA) is an endocrine disruptor found in aqueous environments.
• Effective methods for BPA removal are crucial for environmental protection.

Purpose of the Study:

• To synthesize and characterize bisphenol A (BPA)-imprinted polymers (MIPs) for selective BPA removal.
• To evaluate the adsorption capacity, specificity, and reusability of the developed MIPs.

Main Methods:

• Synthesis of BPA-imprinted (MIP) and non-imprinted (NIP) microbeads.
• Characterization using Zeta-sizer, FTIR, SEM, and BET methods.
• Determination of BPA using liquid chromatography-mass spectroscopy (LC-MS).

Main Results:

• BPA adsorption capacity of MIP-3 was 76.7 mg g(-1), significantly higher than NIP (59.9 mg g(-1)).
• MIP-3 exhibited high binding specificity for BPA over structurally similar phenolic compounds.
• The MIPs demonstrated excellent reusability with no significant loss in adsorption capacity.

Conclusions:

• The synthesized BPA-MIP microbeads show high selectivity and binding affinity for BPA.
• These materials are promising for the selective removal of BPA from aqueous media.
• The study highlights the potential of imprinted polymers in environmental remediation.