The porous Fe/C micro-electrolysis filter was prepared from the iron ore concentrate, coal and papermaking sludge via a direct reduction method. The Fe/C filter was characterized. The adsorptive properties of Pb2+ in aqueous solution were tested by using Fe/C filter and activated carbon, respectively. The results showed that the Fe/C filter had the porosity of 32.3%~52.9%, metallic iron content of over 50% and adjustable Fe/C mass ratio. The optimized mass ratio of Fe to C was 6.8, and the largest adsorption capacity of Pb2+ was obtained at pH=3. The Pb2+ adsorption process with both the Fe/C filter and activated carbon fitted well with a pseudo-second order kinetic model. Langmuir isotherm equation could be used to evaluate the Pb2+ adsorptive capacity. The maximal adsorption capacity of Pb2+ was 112.36 and 27.94 mg/g for the Fe/C filter and activated carbon, respectively, showing the much higher adsorption capacity of the Fe/C filter.