Calcium Oxide Nanoparticles for Chromium (VI) Adsorption: Green Synthesis and Adsorption Studies
Keywords:
Adsorption capacity, Chromium, Lokan shell, NanoparticlesAbstract
The purpose of this study was to synthesize and characterize calcium oxide nanoparticles from Lokan shell using the top-down method with thermal decomposition and then applied to the adsorption of Cr (IV) metal ions. The results of the analysis of the CaO content of the Lokan shell were determined to be 97.513% by XRF analysis. The study of surface morphology and functional groups of calcium oxide as an adsorbent was carried out using SEM, XRD, and FTIR. Adsorption efficiency and capacity with variations in concentration and contact time were studied from the results of AAS analysis, showing an optimum adsorption capacity of 4.606 mg/g. In this study, CaO was identified as an environmentally friendly and effective adsorbent for removing Cr(IV) metal from water samples.
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