LAUSR

This paper dedicated a simple preparation processing of metakaolin-based geopolymer microspheres (MGMs) by the means of suspension dispersion solidification method (SDS), and explored the effects of dimethyl silicone oil temperature and stirring speed on the particle size distribution of MGMs. The prepared MGMs were characterized by X-ray diffraction, scanning electron microscopy, and Brunauer–Emmett–Teller methods. The results showed that MGMs were provided with perfect spherical shape and with a controllable diameter range within 25–450 μm. The MGMs demonstrated excellent adsorption performance for Pb(II) from water. Herein, the following study discussed the engineering applications of fixed bed adsorption technique, including the effect of different flow rate, the particle size of MGMs, bed height, and initial Pb(II) concentration on the breakthrough curves, by using MGMs for Pb(II) removal from aqueous solution.