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Magnetic materials are promising adsorbents for removing heavy metals from polluted wastewaters. Magnetite particles were prepared by electrolytic synthesis (average crystallite size 37.9±1.2 nm , surface area = 17.2 m 2 g - 1 , isoelectric point = 6.3, magnetic saturation = 62 emu g -1 ) and used as adsorbent of heavy metals in aqueous solutions. The adsorption capacity of the magnetite was highly dependent on pH value, for Cd +2 , Zn +2 , Ni +2 and Cu +2 the removal performance was higher that 80% at pH = 8. For Cr+6, the acid pH showed removal percentage higher that 90%. The adsorbent was separated from the system, reactivated and reused in subsequent tests using batch adsorption. It was found that removal efficiencies were higher than 70% even during a third cycle of adsorption. Finally, the kinetic behavior of the adsorption of each adsorbate was described by a first-order. The range of values of q e (mg/g) and k (min -1 ) were 1.3166-1.6367 and 0.0377 to 0.0826 respectively.