Biosorption of Heavy Metal Cadmium From Aqua Medium Using <i>Moringa Oleifera</i> as Nature‐Based Solution

ABSTRACT Cadmium poisoning is a serious threat to human health and environmental safety. Remediation of this metal from water is crucial to ensure the availability of clean and safe water. In this study, the seeds and leaves of Moringa oleifera were employed as biosorbents for the removal of Cd from water. Various parameters such as pH, temperature, particle size, biomass dose, initial metal concentration, and metal exposure time were investigated. Statistical tools were used to examine the statistical significance of each parameter's effect investigated. The parameter such as pH affects ionization and surface binding, biomass dose controls the availability of active sites, and temperature impacts adsorption thermodynamics. SEM and EDS data indicate that the morphological and elemental analyses of the biomaterials post adsorption are clear evidence of Cd binding on biomaterial surfaces. The results of this study revealed that seeds and leaves were effective in removing Cd from water. The seeds showed an average adsorption efficiency of 91.16% for the cadmium metal ion, whereas leaves exhibited an average adsorption efficiency of 86.69%, comparatively less but noteworthy. These results clearly underscore the effectiveness of M. oleifera as a low‐cost biomaterial for the removal of Cd from water, adding to its glory as a potential medicinal plant.