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Optimization of biosorptive removal of dye from aqueous system by cone shell of Calabrian pine.

Deniz F - ScientificWorldJournal (2014)

Bottom Line: Langmuir model fitted better to the biosorption equilibrium data than Freundlich model.Dubinin-Radushkevich model and the standard Gibbs free energy change proposed physical biosorption for predominant mechanism.The logistic function presented the best fit to the data of biosorption kinetics.

View Article: PubMed Central - PubMed

Affiliation: Birecik Anatolian High School, 63400 Birecik, Turkey.

ABSTRACT
The biosorption performance of raw cone shell of Calabrian pine for C.I. Basic Red 46 as a model azo dye from aqueous system was optimized using Taguchi experimental design methodology. L9 (3(3)) orthogonal array was used to optimize the dye biosorption by the pine cone shell. The selected factors and their levels were biosorbent particle size, dye concentration, and contact time. The predicted dye biosorption capacity for the pine cone shell from Taguchi design was obtained as 71.770 mg g(-1) under optimized biosorption conditions. This experimental design provided reasonable predictive performance of dye biosorption by the biosorbent (R (2): 0.9961). Langmuir model fitted better to the biosorption equilibrium data than Freundlich model. This displayed the monolayer coverage of dye molecules on the biosorbent surface. Dubinin-Radushkevich model and the standard Gibbs free energy change proposed physical biosorption for predominant mechanism. The logistic function presented the best fit to the data of biosorption kinetics. The kinetic parameters reflecting biosorption performance were also evaluated. The optimization study revealed that the pine cone shell can be an effective and economically feasible biosorbent for the removal of dye.

Show MeSH
Comparison of kinetic models for biosorption dynamics.
© Copyright Policy - open-access
Related In: Results  -  Collection


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fig6: Comparison of kinetic models for biosorption dynamics.

Mentions: The logistic model is mainly used for modeling of microbial growth and product formation [45, 46]. However, this model is slightly employed for explaining dye biosorption dynamics. The logistic model was used to define the biosorption kinetics of dye onto the cone shell and this model presented the best fit to the experimental results with the most suitable statistical outcomes as displayed in Table 6. Furthermore, Figure 6 shows that the logistic points were quite close to the experimental points over all the biosorption period. Thus, these results reveal that the logistic model can be applied effectively for characterizing the removal kinetics of C.I. Basic Red 46 by the pine cone shell.


Optimization of biosorptive removal of dye from aqueous system by cone shell of Calabrian pine.

Deniz F - ScientificWorldJournal (2014)

Comparison of kinetic models for biosorption dynamics.
© Copyright Policy - open-access
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4227375&req=5

fig6: Comparison of kinetic models for biosorption dynamics.
Mentions: The logistic model is mainly used for modeling of microbial growth and product formation [45, 46]. However, this model is slightly employed for explaining dye biosorption dynamics. The logistic model was used to define the biosorption kinetics of dye onto the cone shell and this model presented the best fit to the experimental results with the most suitable statistical outcomes as displayed in Table 6. Furthermore, Figure 6 shows that the logistic points were quite close to the experimental points over all the biosorption period. Thus, these results reveal that the logistic model can be applied effectively for characterizing the removal kinetics of C.I. Basic Red 46 by the pine cone shell.

Bottom Line: Langmuir model fitted better to the biosorption equilibrium data than Freundlich model.Dubinin-Radushkevich model and the standard Gibbs free energy change proposed physical biosorption for predominant mechanism.The logistic function presented the best fit to the data of biosorption kinetics.

View Article: PubMed Central - PubMed

Affiliation: Birecik Anatolian High School, 63400 Birecik, Turkey.

ABSTRACT
The biosorption performance of raw cone shell of Calabrian pine for C.I. Basic Red 46 as a model azo dye from aqueous system was optimized using Taguchi experimental design methodology. L9 (3(3)) orthogonal array was used to optimize the dye biosorption by the pine cone shell. The selected factors and their levels were biosorbent particle size, dye concentration, and contact time. The predicted dye biosorption capacity for the pine cone shell from Taguchi design was obtained as 71.770 mg g(-1) under optimized biosorption conditions. This experimental design provided reasonable predictive performance of dye biosorption by the biosorbent (R (2): 0.9961). Langmuir model fitted better to the biosorption equilibrium data than Freundlich model. This displayed the monolayer coverage of dye molecules on the biosorbent surface. Dubinin-Radushkevich model and the standard Gibbs free energy change proposed physical biosorption for predominant mechanism. The logistic function presented the best fit to the data of biosorption kinetics. The kinetic parameters reflecting biosorption performance were also evaluated. The optimization study revealed that the pine cone shell can be an effective and economically feasible biosorbent for the removal of dye.

Show MeSH