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>