Abstract
In this work, a new green nanocomposite material was synthesized, characterized, and implemented for the removal of Uranium(VI) from nuclear waste solution. The nanocomposite material consisted of bimetallic Mg/Mn-Tartaric intercalated with bentonite and functionalized with lupine peel biochar through a refluxing process with a mixed solution of water and formaldehyde (3:1). The synthesized nanocomposite and the pristine materials were characterized using FTIR, and XRD, and the thermal stability of all the components was investigated using TGA. Finally, the morphology of the synthesized materials was investigated using SEM images. The adsorption was studied through different parameters: different pH values, sorption time, different amounts of sorbent, and different uranium concentrations. In addition to the adsorption studies, the desorption studies and the elution process were also investigated. It was found that the maximum adsorption value at pH 4.0 and 60.0 min as about 113.90 mg·g−1, the kinetics fit with pseudo second-order, and the adsorption was fitted with the Langmuir model. Finally, the desorption study was established, and the effective eluting agent was Na2CO3, with an elution efficiency of about 97.4 %.
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