Analysis of F removal from aqueous solutions using MgO

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2 Citations (Scopus)

Abstract

MgO was found to take up F from NaF aqueous solutions due to the electrostatic attractive force between the positively charged MgO and F. The F adsorption by MgO can be represented by pseudo first-order reaction kinetics, and the magnitude of the apparent activation energy (71.6 kJ mol−1) confirms that this is a chemisorption process. The thermodynamic behavior of this process follows Langmuir-type adsorption, with the maximum adsorption amount of 5.6 mmol g–1. The F can be desorbed from MgO using NaOH solution. The regenerated MgO can still take up F from the solution despite the lowered adsorption capacity. Therefore, it is possible to recycle the MgO for F adsorption.

Original languageEnglish
Pages (from-to)54-57
Number of pages4
JournalJournal of Water Process Engineering
Volume25
DOIs
Publication statusPublished - 2018 Oct

Keywords

  • Equilibrium
  • FWater treatment
  • Kinetics
  • MgO

ASJC Scopus subject areas

  • Biotechnology
  • Safety, Risk, Reliability and Quality
  • Waste Management and Disposal
  • Process Chemistry and Technology

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