Study on removal of Se(IV) using Fe-Mn layered double hydroxides and Fe-Mn Dos (double oxides)

  • Enkhtur Otgonjargal Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, 4th Building of MAS, Ulaanbaatar, 13330, Mongolia
  • Kitae Baek Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeongju, Jeollabukdo 570-752, Republic of Korea
  • Jung-Seok Yang KIST-Gangneung Institute, Gangneung, Gangwon 210-340, Republic of Korea
  • Enkhtuul Surenjav Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences, 4th Building of MAS, Ulaanbaatar, 13330, Mongolia
  • Aruukhan Dashkhuu Khasbaatar School of Engineering and Applied Sciences, National University of Mongolia, P.O.Box 46A/257, 14201 Main building of NUM, University street 1, Sukhbaatar district, Ulaanbaatar, Mongolia https://orcid.org/0000-0002-1311-1506
Keywords: Adsorption, double oxide, layered double hydroxide, selenium

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.

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Published
2019-12-27
How to Cite
Otgonjargal, E., Baek, K., Yang, J.-S., Surenjav, E., & Khasbaatar, A. (2019). Study on removal of Se(IV) using Fe-Mn layered double hydroxides and Fe-Mn Dos (double oxides). Mongolian Journal of Chemistry, 20(46), 29-37. https://doi.org/10.5564/mjc.v20i46.1239
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