Abstract:Through the optimization of hydrothermal synthesis conditions, Faujasite zeolite materials with octahedral nanorod morphology (micro length of 300—900 nm, cross-section length of 20—50 nm) were successfully synthesized. The theoretical molecular formula of material of Na14Al12Si13O51?6H2O. The zeolite material was applied to adsorb heavy metals in solution. The results illustrate that the ultimate adsorption capacity of Cu2+, Cd2+, Pb2+ and Ni2+ is 250, 323, 1 075 and 256 mg/g, respectively. The adsorption process can reach saturation within 100 minutes, and the increase of pH value of solution can accelerate the improvement of apparent adsorption effect. The quasi-second-order kinetic equation and Langmuir adsorption isotherm can be used to fit the adsorption process of four heavy metal ions by zeolite. The calculation results of DFT display that the stability of adsorption configuration of each heavy metal and the trend sequence of the adsorption process are Pb > Cd > Ni > Cu.