Removal of textile dye by adsorption on the cake as solid waste from the press-extraction of the macaúba (Acrocomia aculeata) kernel oil
terça-feira, julho 03, 2018
Authors: Alice Santos Caldeira, José Domingos Fabris, David Lee Nelson, Sandra Matias Damasceno
ABSTRACT
The textile industries face difficulties in removing dyes
from the liquid effluent, even after what is thought to be conventional
cleaning treatments.
The use of adsorbents to retain dyes in textile
effluents has been showing to be a simple and promisingly efficient
method. The objective of this research was to test the macaúba
(Acrocomia aculeata) kernel cake as adsorbent to remove Remazol
Brilliant Blue dye in batch adsorption tests.
The obtained adsorption
kinetic data at equilibrium were modeled by assuming both the
Langmuir and the Freundlich isotherms. The values were better fitted
with the Langmuir model (R2 = 0.983), with a maximum adsorption
capacity of 3.5 mg g-1 monolayer. This essay showed that the macaúba
cake is an effective adsorbent to remove Remazol Brilliant Blue textile
dye and it is a good alternative for treatment of textile liquid effluents.
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