In this study m-AHLPICS (magnetic Arachis hypogaea leaves powder impregnated into chitosan) was prepared and utilized as an adsorbent to remove U(VI) from aqueous and real polluted wastewater samples. m-AHLPICS was characterized by using the BET, XRD, FTIR, SEM with elemental mapping and magnetization measurements. Different experimental effects such as pH, dose, contact time, and temperature were considered broadly. Chitosan modified magnetic leaf powder (m-AHLPICS) exhibits an excellent adsorption capacity (232.4 ± 5.59 mg/g) towards U(VI) ions at pH 5. Different kinetic models such as pseudo-first-order, and pseudo-second-order models were used to know the kinetic data. Langmuir, Freundlich and D-R isotherms were implemented to know the adsorption behavior. Isothermal information fitted well with Langmuir isotherm. Kinetic data followed by the pseudo-second-order kinetics (with high R2 values, i.e., 0.9954, 0.9985 and 0.9971) and the thermodynamic data demonstrate that U(VI) removal using m-AHLPICS was feasible, and endothermic in nature. • m-AHLPICS was prepared to remove U(VI) from aqueous and real polluted samples. • m-AHLPICS was characterized using the BET, XRD, FTIR, SEM with elemental mapping and VSM. • Kinetic data followed by the pseudo-second-order kinetic model. • Isothermal data fitted well with Langmuir isotherm. • Thermodynamic data demonstrate that U(VI) removal using m-AHLPICS was feasible, and endothermic in nature. [ABSTRACT FROM AUTHOR]