Abstarct: Adsorption: A Potential Solution for Removing Heavy and Radioactive mextals from Reactor Effluent This research focused on the preparation of a polydopamine-boehmite composite with high uranium adsorption capacity. The composite was characterized using Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), field-emission scanning electron microscopy (FESEM), and energy-dispersive X-ray spectroscopy (EDX). Furthermore, BET analysis revealed that the synthesized boehmite-core material (polydopamine-boehmite) had a specific surface area of 342.95 m²/g. The composite was then used to adsorb uranyl acetate from solutions with varying concentrations (50, 100, 130, 140, 150, and 160 ppm) at time intervals ranging from 15 to 360 minutes, and with composite amounts of 0.05, 0.075, and 0.1 grams at pH values of 4, 5, 6, and 7. The optimal conditions for this process were found to be 130 ppm with 0.075 grams of composite at pH 6, achieving an adsorption rate of over 90% within 60 minutes.