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Study on removal of se(Iv) using fe-mn layered double hydroxides and fe-mn dos (double oxides)

  • Enkhtur Otgonjargal
  • , Kitae Baek
  • , Jung Seok Yang
  • , Enkhtuul Surenjav
  • , Aruukhan Dashkhuu Khasbaatar*
  • *Corresponding author for this work
  • Mongolian Academy of Sciences
  • Korea Institute of Science and Technology
  • National University of Mongolia

Research output: Contribution to journalJournal articlepeer-review

Abstract

In this study, Fe-Mn-CO3 layered double hydroxide (LDHs) and Fe-Mn Double oxide (DOs) were synthesized by the co-recipitation methods for Se(IV) removal from aqueous solutions. The Se(IV) adsorption capacities and removal mechanism of Fe-Mn LDH and Fe-Mn DOs determined by batch and column experiments. The calculated Se(IV) adsorption capacities on Fe-Mn LDH and Fe-Mn DOs were 52.5 and 55.3 mg/g, respectively. Kinetic models applied to the adsorption of Se(IV) on the Fe-Mn LDH and Fe-Mn DOs calculated using pseudo-first, second-order, Elovich, and Intraparticle diffusion kinetic models and all kinetic parameters were calculated and discussed. Isotherm studies were also performed using Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich equations in the temperature range of 283-323 K. Adsorption kinetics and isotherm experiments are well fitted pseudo-second order model and Freundlich isotherm, respectively. The production of this adsorbent is cost-effective for industrial applications.

Original languageEnglish
Pages (from-to)29-37
Number of pages9
JournalMongolian Journal of Chemistry
Volume20
Issue number46
DOIs
StatePublished - 2019.12.27

Keywords

  • Adsorption
  • Double oxide
  • Layered double hydroxide
  • Selenium

Quacquarelli Symonds(QS) Subject Topics

  • Environmental Sciences
  • Materials Science
  • Engineering - Petroleum
  • Chemistry
  • Biological Sciences

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