Rapid Adsorption of Heavy Metals by Fe3O4/Talc Nanocomposite and Optimization Study Using Response Surface Methodology

International Journal of Molecular Sciences

Katayoon Kalantari¹  Mansor B. Ahmad¹  Hamid Reza Fard Masoumi²  Kamyar Shameli²  Mahiran Basri² 

[1] Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia;

关键词: heavy metals;    Fe₃O₄/talc nanocomposites;    adsorption;    response surface methodology (RSM);    adsorption kinetics;   

DOI  :  10.3390/ijms150712913

来源: mdpi

【 摘 要 】

Fe₃O₄/talc nanocomposite was used for removal of Cu(II), Ni(II), and Pb(II) ions from aqueous solutions. Experiments were designed by response surface methodology (RSM) and a quadratic model was used to predict the variables. The adsorption parameters such as adsorbent dosage, removal time, and initial ion concentration were used as the independent variables and their effects on heavy metal ion removal were investigated. Analysis of variance was incorporated to judge the adequacy of the models. Optimal conditions with initial heavy metal ion concentration of 100, 92 and 270 mg/L, 120 s of removal time and 0.12 g of adsorbent amount resulted in 72.15%, 50.23%, and 91.35% removal efficiency for Cu(II), Ni(II), and Pb(II), respectively. The predictions of the model were in good agreement with experimental results and the Fe₃O₄/talc nanocomposite was successfully used to remove heavy metals from aqueous solutions.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.