title: Rapid adsorption of heavy metals by Fe3O4/talc nanocomposite and optimization study using response surface methodology.
abstract: 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.
authors: Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia. ka_upm@yahoo.com.
authors: Katayoon
authors: K
authors: Kalantari
authors: Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia. mansorahmad@upm.edu.my.
authors: Mansor B
authors: MB
authors: Ahmad
authors: Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia. Fardmasoumi@upm.edu.my.
authors: Hamid Reza Fard
authors: HR
authors: Masoumi
authors: Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia. kamyarshameli@gmail.com.
authors: Kamyar
authors: K
authors: Shameli
authors: Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia. mahiran@upm.edu.my.
authors: Mahiran
authors: M
authors: Basri
authors: Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang 43400, Malaysia. roshanak_bch@yahoo.com.
authors: Roshanak
authors: R
authors: Khandanlou
mesh_terms: D000327:Adsorption; D005290:Ferric Compounds / Q000737:chemistry*; D019216:Metals, Heavy / Q000737:chemistry*; D053761:Nanocomposites / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D013627:Talc / Q000737:chemistry*
chemical_list: D005290:Ferric Compounds; D019216:Metals, Heavy; D010087:Oxides; D013627:Talc