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Feasibility of goethite nanoparticles for Pb(II) and Cd(II) removal from aqueous solution
Author(s) -
Vinh Nguyen Dinh,
Thao Pham Thi Phuong,
Hanh Nguyen Thi
Publication year - 2019
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201960027
Subject(s) - goethite , adsorption , aqueous solution , nanoparticle , chemistry , precipitation , langmuir adsorption model , kinetics , inorganic chemistry , nuclear chemistry , materials science , nanotechnology , organic chemistry , physics , quantum mechanics , meteorology
In this study, goethite nanoparticles were successfully synthesized by chemical precipitation approach with the assistance of microwave aimed to adsorb heavy metals from water. The phase and morphology of the obtained sample was characterized using XRD and SEM methods. The feasibility of goethite nanoparticles for Pb(II) and Cd(II) removal from aqueous solution was evaluated. The effects of pH, contact time, and initial heavy metals concentrations were investigated. The adsorption of Pb(II) and Cd(II) on goethite remarkably depended on the pH of the solution and contact time. Adsorption kinetics for both metals obeyed the pseudo‐second‐order and the adsorption data fit well with the Langmuir adsorption model. The maximum adsorption of Pb(II) and Cd(II) on goethite nanoparticles was 111.11 and 76.92 mg.g ‐1 at pH 5.5 after 120 and 90 min of the contact time, respectively.