Removal of malachite green dye from aqueous solutions by a magnetic adsorbent

C. De Marco, R. S. Mauler, T. S. Daitx, I. Krindges, A. Cemin, L. R. Bonetto, J. S. Crespo, R. Guégan, L. N. Carli, M. Giovanela

研究成果: Article査読

3 被引用数 (Scopus)

抄録

A magnetic adsorbent was prepared through chemical precipitation using a solution of iron salts and halloysite clay. The obtained material was then characterized and subsequently applied in the removal of malachite green (MG) dye. The pseudo-second-order model was found to explain the adsorption kinetics most effectively, while the equilibrium was well fitted with the Freundlich isotherm model. The data also suggest that MG dye adsorption was spontaneous and exothermic, involving physisorption. Moreover, the adsorbent can be easily separated from the aqueous medium by applying an external magnetic field and reused without significant loss of properties after its regeneration.

本文言語English
ページ(範囲)1089-1101
ページ数13
ジャーナルSeparation Science and Technology (Philadelphia)
55
6
DOI
出版ステータスPublished - 2020 4 12

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • プロセス化学およびプロセス工学
  • ろ過および分離

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