Effect of magnetic Fe/Mn nanocomposites on the removal of lead ion in the aqueous solution

In this paper,magnetic Fe/Mn nanocomposites were synthesized for the removal of Pb2+ from solution.The adsorption capacity and the influence factors such as pH and temperature were analyzed.The results showed that the maximum adsorption capacity(Q0) of the sorbents towards Pb2+was 118.06 mg/L according to the Langmuir isotherms(298 K).The Pb2+ removal capacity of the adsorbents increased with the increase of pH(1.5-5) and temperature(303-323 K).In addition,the kinetic adsorption could be fitted by the pseudo-second-order model equation.At last,the thermodynamics of Pb2+ was studied at various temperature and the thermodynamic parameters were given which confirmed that the adsorption was endothermic reaction.