10.6084/m9.figshare.7998158.v1
Anderson Marcos Dias Canteli
Anderson Marcos Dias
Canteli
Fernando Augusto Pedersen Voll
Fernando Augusto Pedersen
Voll
Agnes de Paula Scheer
Agnes
de Paula Scheer
Statistical evaluation of dye desorption – mixed two- and three-level design and kinetic modeling
Taylor & Francis Group
2019
Akaike information criterion
Batch desorption
Biosorbent
Mixed design
n-order model
2019-04-16 07:50:33
Journal contribution
https://tandf.figshare.com/articles/journal_contribution/Statistical_evaluation_of_dye_desorption_mixed_two-_and_three-level_design_and_kinetic_modeling/7998158
<p>Biosorption has been shown in the literature to be effective in the removal of dye from aqueous solution. To be fully useful, a desorption process is necessary, which has a direct impact on the process costs. The aim of this work was to evaluate the desorption of the azo dye Acid Yellow 23 adsorbed in a biosorbent obtained from <i>Bombyx mori</i> cocoons. Temperature and pH media were evaluated through a mixed two- and three-level design, using NaOH as desorbing agent. Kinetic desorption was also obtained at the optimized condition. The statistical evaluation of the experimental design showed that the pH has almost two times more influence on the dye desorption than the temperature, with only the linear parameters being statistically significant. Among four kinetic desorption models adjusted to the experimental data, the proposed <i>n-</i>order model was statistically determined as the best representation of the experimental data.</p>