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 | |
| Publication status | Published - 2019 Jan 1 |
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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
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 journal › Article
}
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 -