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, Regis Guegan, L. N. Carli, M. Giovanela

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
JournalSeparation Science and Technology (Philadelphia)
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Adsorbents
Coloring Agents
Dyes
Adsorption
Physisorption
Isotherms
Clay
Iron
Salts
Magnetic fields
Kinetics
clay
malachite green

Keywords

  • adsorption
  • Halloysite
  • kinetics and thermodynamics parameters
  • magnetite
  • malachite green dye

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Process Chemistry and Technology
  • Filtration and Separation

Cite this

De Marco, C., Mauler, R. S., Daitx, T. S., Krindges, I., Cemin, A., Bonetto, L. R., ... Giovanela, M. (2019). Removal of malachite green dye from aqueous solutions by a magnetic adsorbent. Separation Science and Technology (Philadelphia). https://doi.org/10.1080/01496395.2019.1585455

Removal of malachite green dye from aqueous solutions by a magnetic adsorbent. / De Marco, C.; Mauler, R. S.; Daitx, T. S.; Krindges, I.; Cemin, A.; Bonetto, L. R.; Crespo, J. S.; Guegan, Regis; Carli, L. N.; Giovanela, M.

In: Separation Science and Technology (Philadelphia), 01.01.2019.

Research output: Contribution to journalArticle

De Marco, C, Mauler, RS, Daitx, TS, Krindges, I, Cemin, A, Bonetto, LR, Crespo, JS, Guegan, R, Carli, LN & Giovanela, M 2019, 'Removal of malachite green dye from aqueous solutions by a magnetic adsorbent', Separation Science and Technology (Philadelphia). https://doi.org/10.1080/01496395.2019.1585455
De Marco, C. ; Mauler, R. S. ; Daitx, T. S. ; Krindges, I. ; Cemin, A. ; Bonetto, L. R. ; Crespo, J. S. ; Guegan, Regis ; Carli, L. N. ; Giovanela, M. / Removal of malachite green dye from aqueous solutions by a magnetic adsorbent. In: Separation Science and Technology (Philadelphia). 2019.
@article{10fa57a6ee8a4883a71ec9938ed44a7a,
title = "Removal of malachite green dye from aqueous solutions by a magnetic adsorbent",
abstract = "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.",
keywords = "adsorption, Halloysite, kinetics and thermodynamics parameters, magnetite, malachite green dye",
author = "{De Marco}, C. and Mauler, {R. S.} and Daitx, {T. S.} and I. Krindges and A. Cemin and Bonetto, {L. R.} and Crespo, {J. S.} and Regis Guegan and Carli, {L. N.} and M. Giovanela",
year = "2019",
month = "1",
day = "1",
doi = "10.1080/01496395.2019.1585455",
language = "English",
journal = "Separation Science and Technology",
issn = "0149-6395",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - Removal of malachite green dye from aqueous solutions by a magnetic adsorbent

AU - De Marco, C.

AU - Mauler, R. S.

AU - Daitx, T. S.

AU - Krindges, I.

AU - Cemin, A.

AU - Bonetto, L. R.

AU - Crespo, J. S.

AU - Guegan, Regis

AU - Carli, L. N.

AU - Giovanela, M.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - 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.

AB - 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.

KW - adsorption

KW - Halloysite

KW - kinetics and thermodynamics parameters

KW - magnetite

KW - malachite green dye

UR - http://www.scopus.com/inward/record.url?scp=85062452698&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062452698&partnerID=8YFLogxK

U2 - 10.1080/01496395.2019.1585455

DO - 10.1080/01496395.2019.1585455

M3 - Article

JO - Separation Science and Technology

JF - Separation Science and Technology

SN - 0149-6395

ER -