Removal of methyl violet 2B dye from aqueous solution using a magnetic composite as an adsorbent

L. R. Bonetto, F. Ferrarini, C. De Marco, J. S. Crespo, Regis Guegan, M. Giovanela

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Despite the important role of the textile industry in the global economy, its effluents generate deep concern with regard to treatment and disposal. Adsorption is a promising technique for the removal of textile color effluent at relatively low cost and with satisfactory efficiency. This study aimed to evaluate the adsorption capacity of a halloysite-magnetite-based composite in the removal of methyl violet 2B cationic dye. After preparation, the obtained composite was characterized by applying several instrumental techniques, including X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy and determination of pH at the point of zero charge. The influences of stirring rate, adsorbent mass, pH, initial concentration of dye and contact time on the adsorption process were also studied. The adsorption capacity of the composite was then investigated in a temperature-controlled batch system. The experimental results showed that the adsorption kinetics were better described using a pseudo-second-order model. Regarding the adsorption equilibrium, the experimental results suggest that both the Langmuir and Freundlich models were applicable. The thermodynamic data showed that dye adsorption onto the composite was spontaneous and endothermic and occurred by physisorption. The employed composite could also be regenerated at least four times using a 1.0molL-1 solution of NaOH as an eluent and was shown to be a promising adsorbent for the removal of cationic dyes.

Original languageEnglish
Pages (from-to)11-20
Number of pages10
JournalJournal of Water Process Engineering
Volume6
DOIs
Publication statusPublished - 2015 Jun 1
Externally publishedYes

Fingerprint

Gentian Violet
Adsorbents
Adsorption
dye
Coloring Agents
aqueous solution
Dyes
adsorption
Composite materials
Effluents
Ferrosoferric Oxide
effluent
Textile Industry
halloysite
Physisorption
Textiles
global economy
Magnetite
textile industry
Textile industry

Keywords

  • Adsorption
  • Halloysite-magnetite-based composite
  • Kinetics
  • Methyl violet 2B
  • Thermodynamics

ASJC Scopus subject areas

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

Cite this

Removal of methyl violet 2B dye from aqueous solution using a magnetic composite as an adsorbent. / Bonetto, L. R.; Ferrarini, F.; De Marco, C.; Crespo, J. S.; Guegan, Regis; Giovanela, M.

In: Journal of Water Process Engineering, Vol. 6, 01.06.2015, p. 11-20.

Research output: Contribution to journalArticle

Bonetto, L. R. ; Ferrarini, F. ; De Marco, C. ; Crespo, J. S. ; Guegan, Regis ; Giovanela, M. / Removal of methyl violet 2B dye from aqueous solution using a magnetic composite as an adsorbent. In: Journal of Water Process Engineering. 2015 ; Vol. 6. pp. 11-20.
@article{9e3cc3d1aaa84e6db273d07f893e5a49,
title = "Removal of methyl violet 2B dye from aqueous solution using a magnetic composite as an adsorbent",
abstract = "Despite the important role of the textile industry in the global economy, its effluents generate deep concern with regard to treatment and disposal. Adsorption is a promising technique for the removal of textile color effluent at relatively low cost and with satisfactory efficiency. This study aimed to evaluate the adsorption capacity of a halloysite-magnetite-based composite in the removal of methyl violet 2B cationic dye. After preparation, the obtained composite was characterized by applying several instrumental techniques, including X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy and determination of pH at the point of zero charge. The influences of stirring rate, adsorbent mass, pH, initial concentration of dye and contact time on the adsorption process were also studied. The adsorption capacity of the composite was then investigated in a temperature-controlled batch system. The experimental results showed that the adsorption kinetics were better described using a pseudo-second-order model. Regarding the adsorption equilibrium, the experimental results suggest that both the Langmuir and Freundlich models were applicable. The thermodynamic data showed that dye adsorption onto the composite was spontaneous and endothermic and occurred by physisorption. The employed composite could also be regenerated at least four times using a 1.0molL-1 solution of NaOH as an eluent and was shown to be a promising adsorbent for the removal of cationic dyes.",
keywords = "Adsorption, Halloysite-magnetite-based composite, Kinetics, Methyl violet 2B, Thermodynamics",
author = "Bonetto, {L. R.} and F. Ferrarini and {De Marco}, C. and Crespo, {J. S.} and Regis Guegan and M. Giovanela",
year = "2015",
month = "6",
day = "1",
doi = "10.1016/j.jwpe.2015.02.006",
language = "English",
volume = "6",
pages = "11--20",
journal = "Journal of Water Process Engineering",
issn = "2214-7144",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Removal of methyl violet 2B dye from aqueous solution using a magnetic composite as an adsorbent

AU - Bonetto, L. R.

AU - Ferrarini, F.

AU - De Marco, C.

AU - Crespo, J. S.

AU - Guegan, Regis

AU - Giovanela, M.

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Despite the important role of the textile industry in the global economy, its effluents generate deep concern with regard to treatment and disposal. Adsorption is a promising technique for the removal of textile color effluent at relatively low cost and with satisfactory efficiency. This study aimed to evaluate the adsorption capacity of a halloysite-magnetite-based composite in the removal of methyl violet 2B cationic dye. After preparation, the obtained composite was characterized by applying several instrumental techniques, including X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy and determination of pH at the point of zero charge. The influences of stirring rate, adsorbent mass, pH, initial concentration of dye and contact time on the adsorption process were also studied. The adsorption capacity of the composite was then investigated in a temperature-controlled batch system. The experimental results showed that the adsorption kinetics were better described using a pseudo-second-order model. Regarding the adsorption equilibrium, the experimental results suggest that both the Langmuir and Freundlich models were applicable. The thermodynamic data showed that dye adsorption onto the composite was spontaneous and endothermic and occurred by physisorption. The employed composite could also be regenerated at least four times using a 1.0molL-1 solution of NaOH as an eluent and was shown to be a promising adsorbent for the removal of cationic dyes.

AB - Despite the important role of the textile industry in the global economy, its effluents generate deep concern with regard to treatment and disposal. Adsorption is a promising technique for the removal of textile color effluent at relatively low cost and with satisfactory efficiency. This study aimed to evaluate the adsorption capacity of a halloysite-magnetite-based composite in the removal of methyl violet 2B cationic dye. After preparation, the obtained composite was characterized by applying several instrumental techniques, including X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy and determination of pH at the point of zero charge. The influences of stirring rate, adsorbent mass, pH, initial concentration of dye and contact time on the adsorption process were also studied. The adsorption capacity of the composite was then investigated in a temperature-controlled batch system. The experimental results showed that the adsorption kinetics were better described using a pseudo-second-order model. Regarding the adsorption equilibrium, the experimental results suggest that both the Langmuir and Freundlich models were applicable. The thermodynamic data showed that dye adsorption onto the composite was spontaneous and endothermic and occurred by physisorption. The employed composite could also be regenerated at least four times using a 1.0molL-1 solution of NaOH as an eluent and was shown to be a promising adsorbent for the removal of cationic dyes.

KW - Adsorption

KW - Halloysite-magnetite-based composite

KW - Kinetics

KW - Methyl violet 2B

KW - Thermodynamics

UR - http://www.scopus.com/inward/record.url?scp=84924696788&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84924696788&partnerID=8YFLogxK

U2 - 10.1016/j.jwpe.2015.02.006

DO - 10.1016/j.jwpe.2015.02.006

M3 - Article

AN - SCOPUS:84924696788

VL - 6

SP - 11

EP - 20

JO - Journal of Water Process Engineering

JF - Journal of Water Process Engineering

SN - 2214-7144

ER -