The pursuit of removal efficiency in the purification of polluted residue water has driven the layered double hydroxides (LDH), which exhibit promise due to their adsorption capabilities of textile dye and potential for composite formation with various materials.This study presents significant findings with its meticulous focus on synthesizing composites with LDH/alginate to remove the Reactive Blue BF 5G textile dye.Three distinct methods of LDH synthesis, with different percentages of this material in sodium alginate and different drying methods, were carefully used to form composites.The adsorbent synthesis optimization was performed, and the best result was obtained with 10% LDH in alginate using freeze-drying, with subsequent determination of the surface characteristics and composition of the composite.The influence of pH on the adsorption of BF 5G was assessed, with the optimal pH adsorption determined to be 4.5.Batch adsorption tests were conducted over 53 days at 25, 40, and 55°C, gathering kinetic and equilibrium data.Freundlich and BET equations fit the data well, revealing a maximum adsorption capacity of 248.05 ± 24.45 mg g-1 at 40°C.The monolayer-multilayer adsorption (MMA) model adequately predicted equilibrium and kinetics.Thermodn. parameters indicated a spontaneous process, with endothermic monolayer adsorption and exothermic multilayer adsorption, demonstrating phys. interactions between the adsorbate and adsorbent.Predictive modeling demonstrated strong agreement with exptl. values, confirming the successful application of the MMA and BET models in describing the adsorption process's kinetic, equilibrium, and thermodn. behavior.