科研之友
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摘要
A nanocomposite absorbent of Al2O3-ZrO2/MMT (A1MMT) was produced by intercalating Al2O3-ZrO2 into interlayers of MMT (montmorillonite), which was from the waste of Al-Zr tanning agent used when making leather. The A1MMT nanocomposite was characterized by XRD, TEM and SEM. The factors that affected the adsorbtion process of Cr3+ were also analyzed. Cr3+ was adsorbed on the surface of A1MMT. The adsorbing processes were mainly surface adsorption, ion exchange and electrostatic forces. Cr3+ adsorption kinetics and isotherm of AIMMT can be described by pseudo-second-order kinetics and Langmuir equation at 25 degrees C.
