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This research addressed the elimination of the dye Congo red (CR) from an aqueous solution utilizing dried palm leaf activated carbon (PLAC). Therefore, we performed batch experiments for isotherms and sorption kinetics. According to the experimental data, the adsorption method largely depends on the equilibrium time, initial concentration of dye, pH solution, and adsorbent amount. We observed sorption equilibrium for the dye Congo red via PLAC in 60 min and an adsorption capacity of 52.1 mg g-1. A pseudo-first-order kinetic model was followed by sorption kinetics, whereas the Langmuir isotherm has been proposed to be help reache the equilibrium factor. The above data demonstrated that PLAC is an effective, low-cost, and environmentally friendly biomaterial for removing the dye from the aqueous solution.