Login Register
 
Home Accepted Papers
Performance of Iron Oxyhydroxide Nanoparticles in Lead Adsorption: A Comparison Study
Paper ID : 2108-UFGNSM13-FULL (R1)
Authors:
Safoora Rahimi *1, rozita m moatari1, Laleh Rajabi2, Ali Ashraf Derakhshan2, Mohammead keyhani3
1Room No.38, Department of Chemical Engineering, College of Engineering, Razi University, Kermanshah, 67149-67346, Iran.
2Polymer Research Center, Department of Chemical Engineering, Razi University
3Room No.38, Department of Chemical Engineering, College of Engineering, Razi University, Kermanshah, 67149-67346, Iran
Abstract:
Lepidocrocite (γ-FeOOH) and goethite (α-FeOOH) are two of the most common iron oxy-hydroxides in natural systems. Lepidocrocite and goethite were synthesized using iron (II) chloride tetra-hydrate and iron (III) nitrate nona-hydrate. The ultra sound waves were used to minimize the agglomeration of the nanoparticles. FTIR and SEM characterized the nanoparticles. The particles were needle-like in shape and their diameter was detected between 20-40 nm and 30-40 nm for lepidocrocite and goethite, respectively. The aim of this study was to investigate the adsorption potential of lepidocrocite (γ-FeOOH) and goethite (α-FeOOH) towards lead in aqueous solutions. The adsorption of lead was studied by batch experiments and the effects of different operational parameters e.g., type of adsorbant, solution pH, adsorbent dose, contact time, and the initial concentration of Pb in constant temperature (25°C) and agitation rate were studied. The concentration of Pb was measured by atomic absorption spectroscopy. Lepidocrocite exhibited > 53% and 38% adsorption from 50 and 5 mg/L Pb solutions, respectively. However, goethite demonstrated 100% adsorption in 5 and 50 mg/L Pb solutions. The adsorption increased in the following order: goethite > reach of goethite > reach of lepidocrocite > lepidocrocite.
Keywords:
Iron oxyhydroxide, Lepidocrocite, Goethite, Lead asorption
Status : Paper Accepted (Poster Presentation)