Investigations into the Adsorption Isotherm and Kinetics of Heavy Metal Removal Using Green Iron Oxide Nanoparticles.
Year: 2025
Type: article
Abstract: Iron oxide nanoparticles (IONPs) are highly effective and environmentally sustainable adsorbents for the removal of heavy metals from wastewater. This study focuses on exploring a green route for synthesizing IONPs using Hibiscus rosa-sinensis petal extract, promoting an eco-friendly approach. The synthesized particles were evaluated analytically using XRD, confirming a crystallite size of 6.16 nm, and were assessed for adsorption of Pb(II) and Cu(II) ions. Optimized adsorption conditions, including pH 5 and an interaction period of 30 minutes, resulted in high removal efficiencies of 95.48% for Pb(II) and 84.9% for Cu(II). Adsorption behavior was best explained by the Langmuir isotherm, revealing maximum adsorption capacities of 30.77 mg/g and 28.74 mg/g for Pb(II) and Cu(II) respectively, while kinetic studies confirmed a pseudo-second-order model. These findings underscore the potency of green-synthesized IONPs as a promising and sustainable solution for wastewater treatment, paving the way for their potential real-world applications.
Source: Nanofabrication
Authors: Kirti Srivastava, Roli Verma, R.S. Jagadish, Yamini Pandey, Abhishek Kumar
Language: English
Subfield: Water Science and Technology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4409421226