Effectiveness of Ni0.5Zn0.5Fe2O4 for the removal and preconcentration of Cr(VI), Mo(VI), V(V) and W(VI) oxyanions from water and wastewater samples

被引：20

作者：

Afkhami, Abbas ^{[1
]}

Aghajani, Samira ^{[1
]}

Mohseni, Milad ^{[1
]}

Madrakian, Tayyebeh ^{[1
]}

机构：

[1] Bu Ali Sina Univ, Fac Chem, Hamadan, Iran

来源：

JOURNAL OF THE IRANIAN CHEMICAL SOCIETY | 2015年 / 12卷 / 11期

关键词：

Magnetic nanocomposite; Nickel-zinc ferrite; Cr(VI); Mo(VI); V(V) and W(VI) oxyanions; Water purification; Preconcentration; HEAVY-METAL IONS; TITANATE NANOFIBERS; ADSORPTION; NANOCOMPOSITE; NANOPARTICLES; TUNGSTEN(VI); REDUCTION;

D O I：

10.1007/s13738-015-0675-z

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ni0.5Zn0.5Fe2O4 nanocomposite was synthesized and used for the removal and preconcentration of Cr(VI), Mo(VI), V(V) and W(VI) ions. The effect of various parameters such as pH, amount of the adsorbent and contact time on the adsorption efficiency of Cr(VI), Mo(VI), V(V) and W(VI) ions on the adsorbent were studied. The maximum adsorption occurred at pH 4.0 for Cr(VI) and W(VI) and at pH 5.0 for Mo(VI) and V(V). Maximum adsorption capacity (q(max)) was estimated using Langmuir adsorption model as 48.5, 38.8, 28.0 and 72.0 mg g(-1) for Cr(VI), Mo(VI), V(V) and W(VI) ions, respectively. The adsorbed oxyanions were then desorbed by NaOH solution. The concentration of the ions in desorbed solution was determined spectrophotometrically. Calibration curves were linear for Cr(VI), Mo(VI), V(V) and W(VI) ions in the range 0.7-150.0, 0.9-70.0, 2.0-50.0 and 1.0-40.0 ng mL(-1) for an initial sample solution of 100 mL, respectively.

引用

页码：2007 / 2013

页数：7

共 30 条

[1] Magnetic nickel zinc ferrite nanocomposite as an efficient adsorbent for the removal of organic dyes from aqueous solutions [J].