Effect of Mg2+ ions on competitive metal ions adsorption/desorption on magnesium ferrite: Mechanism, reusability and stability studies

JOURNAL OF HAZARDOUS MATERIALS

卷:411

Article

Ivanets, Andrei¹  Prozorovich, Vladimir¹  Kouznetsova, Tatyana¹  Dontsova, Tetiana²  Yanushevska, Olena²  Hosseini-Bandegharaei, Ahmad^3,4  Srivastava, Varsha^5,6  Sillanpaa, Mika^7,8,9 

[1] Natl Acad Sci Belarus, Inst Gen & Inorgan Chem, St Surganova 9-1, Minsk 220072, BELARUS

[2] Natl Tech Univ Ukraine, Igor Sikorsky Kyiv Polytech Inst, Fac Chem Technol, Kiev, Ukraine

[3] Sabzevar Univ Med Sci, Sch Hlth, Dept Environm Hlth Engn, Sabzevar, Iran

[4] Islamic Azad Univ, Kashmar Branch, Dept Engn, POB 161, Kashmar, Iran

[5] Univ Jyvaskyla, Dept Chem, POB 35, FI-40014 Jyvaskyla, Finland

[6] LUT Univ, Dept Green Chem, Sammonkatu 12, FI-50130 Mikkeli, Finland

[7] Duy Tan Univ, Fac Environm & Chem Engn, Da Nang 550000, Vietnam

[8] Duy Tan Univ, Inst Res & Dev, Da Nang 550000, Vietnam

[9] Univ Johannesburg, Sch Min Met & Chem Engn, Dept Chem Engn, POB 17011, ZA-2028 Doornfontein, South Africa

关键词: Magnesium ferrite;    Competitive adsorption;    Mechanism adsorption;    Regeneration;    Stability;   

DOI  :  10.1016/j.jhazmat.2020.124902

来源: Elsevier

【 摘 要 】

The adsorption behavior of magnesium ferrite in single- and multicomponent metal ions solutions in the presence of Mg2+ ions were studied. A dramatic decrease in the adsorption capacity of magnesium ferrite towards Mn2+, Co2+, and Ni2+ ions for comparison study of single- and multicomponent solutions was established. The affinity of the sorbent in accordance with the maximum sorption capacities increases in the following order Cu2+ > Co2+ > Ni2+ > Mn2+. High efficiency of magnesium ferrite regeneration (similar to 100%) with aqueous solutions of magnesium chloride in the concentration range of 0.001-0.1 M was shown. The low degree of toxic metal ions desorption combined with XRD, IR spectroscopy, and EDX analysis data indicate the key role of Mg2+ ion adsorption in the magnesium ferrite adsorbent regeneration. The positive effect of the introduction of Mg2+ ions into multicomponent solutions on metal ions adsorption was established, which is accompanied by an increase in the maximum sorption capacity for all metal ions and especially significant increase in the selectivity towards Cu2+ ions (2.41 mmol/g). The stability of the crystal structure of magnesium ferrite and a low degree of Mg2+ and Fe3+ ions leaching during multiple cycles of adsorption and regeneration of the adsorbent were observed.

【 授权许可】

Free