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

doi:10.1080/01496395.2019.1585455

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

Global Center for Science and Engineering

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

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 language	English
Journal	Separation Science and Technology (Philadelphia)
DOIs	https://doi.org/10.1080/01496395.2019.1585455
Publication status	Published - 2019 Jan 1

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

Access to Document

10.1080/01496395.2019.1585455

Fingerprint Dive into the research topics of 'Removal of malachite green dye from aqueous solutions by a magnetic adsorbent'. Together they form a unique fingerprint.

Cite this

@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 = jan,

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

AN - SCOPUS:85062452698

JO - Separation Science and Technology

JF - Separation Science and Technology

SN - 0149-6395

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this