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P(Sts-HEMA) magnetic microspheres were synthesized by dispersion polymerization and then reacted with ethylene diamine to yield amino-functionalized [P(St-HEMA)-EDA] magnetic microspheres. The prepared [P(S-sHEMA)sEDA] magnetic microspheres were characterized by scanning electron microscope (SEM), Fourier transform infrared spectrometer (FTIIR) and vibrating stamp! Magnetometer (VSM). Magnetic microspheres were used to adsorb Pb2+ from simulated wastewater. The effects of Pb2+ adsorptions were investigated in different pH, adsorbent dosage and adsorption time by batch experiments. The results showed that the synthesized [P(StsHEMA)EDA] magnetic microspheres had a strong potential for Pb2+ removal. The adsorption reached equilibrium within 90 min. The process followed pseudo-second-order kinetic and the adsorption of Pb2+ in aqueous solution belonged to a chemisorption process. Under 298 K, the saturated adsorption was aprons mainly 87.566 mg/g. The process about magnetic microspheres adsorbing Pb2+ conformed to Langmuir model. [ABSTRACT FROM AUTHOR]