Lead has been the major source of environmental pollution today. The removal of this pollutant has been a topic of significant importance among the scientific community. Therefore, to emphasise the quantity and specific removal of lead ion through the reactivity of lead toward NAAM was the objective of this study, and to analyse mechanisms involved in absorption and adsorption of lead. Thus, the study reports preparation of activated alumina based on green in house coupled with design of experiment (DOE) based on response surface methodology six parameters that were found significant in determining the quality NAAM produced (pH, NaOH, H2SO4, DI (H2O), and Al). The trend showed that a higher amount of aluminium, the micro-pore volume, and the adsorption cumulative volume of the pores for the activated alumina were 0.000821 cm3/g, 0.00221 cm3/g, and 0.002203 cm3/g. The produced NAAM have been tested for their potential to remove lead ion Pb2+ from wastewater, and the results have been promising. Adsorbent temperatures, dose, concentrations, contact time, and temperature have all been observed to affect the adsorption of Pb2+ onto membranes in laboratory experiments. The investigations were conducted at varying pH of the natural solution. The Langmuir and Freundlich models for the equilibrium data was well-fitting, with the maximum adsorption capacity of 25 mg of lead/g of the nanomembrane. The two model was further supported by the pseudo-second-order model introduced. The results of the experimental data revealed that the maximum removal rate for lead ion was 100% when the conditions were perfect. During the first 5 min, the sorption of lead ion on the membrane was rapid, and equilibrium was achieved in less than 20 min and confirmed by the Langmuir and Freundlich models and as well as the pseudo-second-order model where the kinetic of the lead on adsorption obeyed with the model. Thus, when it came to the removal of lead ion from aqueous solution, the membrane tested in this study shows excellent potential.
