Mozambican bentonite (MB) was modified using trimethyldecylammonium bromide (TDTMA) to enhance the removal capacity of sulphates from acid mine drainage (AMD). Through the modification process the surface properties of the clay was rendered organophilic. Batch adsorption experiments of the modified clay were done in a thermostatic shaker at different temperatures, mass loading of adsorbent, and cation exchange capacity (CEC) percentages to investigate the sorption behavior of sulphates from AMD. Characterization of the modified clay was done using XRF, XRD and FTIR to investigate the chemical composition of the clay, removal mechanism and structural change of the clay due to sorption of sulphates. The reaction was endothermic and fitted the Temkin isotherm model and the second order kinetic model. More sulphates were adsorbed at higher temperatures, suggesting that this was an endothermic reaction, which was supported by the positive value of enthalpy.