In this study, a magnetic montmorillonite composite (MMC) was prepared by a coprecipitation method, evaluated as sorbent for Cd(II) ions and characterized by IR spectroscopy, SEM, EDX, VSM, and zeta potential measurement. The adsorption potential of MMC was tested in both batch and continuous modes at different initial pH levels, sorbent dosages, contact times, ionic strengths, flow rates, and bed depths. The adsorption performance of MMC was found maximum at an original solution pH of 5.9 with 0.18 g sorbent for Cd(II). Fast adsorption equilibrium was established within 10 min. Kinetic and isotherm studies showed that the adsorption data followed the pseudo-second-order kinetic model and Langmuir isotherm. The maximum monolayer adsorption capacity of MMC was 0.325 mmol g(-1). Cd(II) adsorption was mainly controlled by ion exchange, electrostatic interaction, and surface complexation mechanisms. Desorption and reusability studies revealed that MMC can be a promising alternative for the effective adsorption of Cd(II) in aqueous solutions of environmental remediation.