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Agarose@MgO Composite Tablet for Heavy Metal Removal From Acid Sulfate Water


Agarose-MgO composite was used as sorbents for the removal of iron from aqueous solution. The composite was synthesized by entrapping MgO nanoparticles in the porous structure of cylinder agarose tablets. The adsorption of iron was investigated under various initial concentrations of ion aqueous solution, time of contact, concentration of initial materials, ions in individual and miscellaneous solutions. The concentration of ion in aqueous solution was determined by inductively coupled plasma optical emission spectrometry. The adsorption capacity of Fe(III) by agarose@MgO composite tablet was 275 mg g−1. In individual aqueous solution, the adsorption efficiency follows the order Fe(III) > Al(III) > As(V). In contrast, high adsorption of As(V) diminished the adsorption activity of Fe(III) and Al(III) in multi-component solution. As a result, agarose@MgO composite tablets would be a promising candidate for water treatment.

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The work was supported by Grants from Vietnam National University Ho Chi Minh City Grant Number C2018-50-01. The authors would like to thank the Lab of Multifunctional Material and Central Analysis Laboratory, University of Science, Vietnam National University Ho Chi Minh City for freeze-drying our samples and ICP-OES measurments.

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Correspondence to Bach Thang Phan.

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Mai, N.X.D., Le, T.A.C., Doan, T.L. et al. Agarose@MgO Composite Tablet for Heavy Metal Removal From Acid Sulfate Water. Journal of Elec Materi 49, 1857–1863 (2020).

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  • Agarose
  • MgO
  • composite
  • heavy metals removal
  • acid sulfate water treatment