Removal of arsenic(V) by magnetic nanoparticle activated microfibrillated cellulose

Sanna Hokkanen, Eveliina Repo, Song Lou, Mika Sillanpää

Research output: Contribution to journalArticlepeer-review

133 Citations (Scopus)

Abstract

In this study a novel adsorbent, magnetic iron nanoparticles modified microfibrillated cellulose (FeNP/MFC), was used for arsenate (As(V)) removal from aqueous solutions. The modified cellulose was characterized by FTIR, elemental analysis, zeta potential analyzer, SEM, and TEM. In order to demonstrate the adsorption performance of synthesized material, the effects of contact time, pH, initial As(V) concentration, and regeneration were investigated. The equilibrium adsorption data were fitted to Langmuir, Freundlich, and Sips adsorption models, and the model parameters were evaluated. The monolayer adsorption capacity of the adsorbent, as obtained from the Langmuir isotherm, is 2.460. mmol/g. The adsorption process could be described by pseudo-second-order kinetic model. Iron nanoparticle modified MFC was found to be an exceptional adsorbent material due to its magnetic properties, high surface area and a good adsorption capacity.

Original languageEnglish
Pages (from-to)886-894
Number of pages9
JournalChemical Engineering Journal
Volume260
DOIs
Publication statusPublished - 5 Jan 2015
Externally publishedYes

Keywords

  • Adsorption
  • Arsenic
  • Magnetic nanoparticles
  • Nanocellulose
  • Water treatment

ASJC Scopus subject areas

  • General Chemistry
  • Environmental Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering

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