Description
Title: Utilizing oxidized biomass as an adsorbent to remove heavy metal ions from water
Abstract: Very coarse wool fibers are now regarded as waste biomass and are either burned or discarded randomly. Therefore, it is important to value coarse wool fibers as useful materials. In this regard, we present here an eco-friendly method for creating a novel substance based on oxidized wool fibers and intended for effective heavy metal adsorption from wastewater. Scanning electron microscopy (SEM) coupled with an X-ray energy-dispersive module (EDX) and Fourier-transform infrared spectroscopy were used to characterize the morphology and structure of the final product (FTIR). The abilities of oxidized wool fibers to absorb heavy metal cations (Cu2+, Cd2+, and Pb2+) from aqueous solutions were also evaluated. The pseudo-first-order (PFO) and pseudo-second-order (PSO) kinetic models were used to analyze the adsorption kinetics data. The Freundlich and Langmuir isotherm models were used to investigate the equilibrium of the adsorption process. The maximum adsorption capacities of the oxidized wool were found to increase from Cu2+ (9.41 mg/g) and Cd2+ (10.42 mg/g) to Pb2+ (30.71 mg/g) according to the Langmuir isotherms recorded at 300 K. As a result, it was discovered that the removal efficiency of metal ions could range from 96.8 to 99.7%. Enthalpy, entropy, and Gibbs free energy were some of the thermodynamic parameters that were calculated and discussed.
Keywords: oxidized wool; adsorption; heavy metal ions; kinetics; thermodynamics
Paper Quality: SCOPUS / Web of Science Level Research Paper
Subject: Chemistry
Writer Experience: 20+ Years
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