Adsorption Thermodynamics, Modeling, and Kinetics Studies for the Removal of Lead Ions Using ZnO Nanorods

Adsorption Thermodynamics, Modeling, and Kinetics Studies for the Removal of Lead Ions Using ZnO Nanorods

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In the present investigation, zinc oxide nanorods (ZnO-NR) were synthesized via the hydrothermal method using ZnCl2 as a zinc ion precursor in the presence of cetyltrimethylammonium bromide.Synthesized ZnO-NR was featured using advanced techniques including XRD, PL, SEM, and UV-visible spectroscopy.The role of these assynthesized ZnO-NR was evaluated for the sequestration of lead ions in batch mode.

The elimination of campicon.com lead ions was achieved at pH 6-7 using a 0.06 g adsorbent dose, 25 min contact time, 25 mg/L initial lead ion concentration, 323 K temperature, and 200 rpm agitation speed.A thermodynamic study revealed the endothermic nature of lead ion lolasalinas.com sequestration onto ZnO-NR.

The lead ion sequestration followed kinetic (pseudo-second-order) and isotherm (Langmuir) models.The lead ions were eliminated up to 142 mg/g at the optimum level of affecting variables.The ZnO-NR might be a potential adsorbent for lead ion removal from industrial effluents.