Equilibrium and thermodynamics of azo dyes biosorption onto Spirulina platensis
| Autor: | G. L. Dotto, M. L. G. Vieira, V. M. Esquerdo, L. A. A. Pinto |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Brazilian Journal of Chemical Engineering v.30 n.1 2013 Brazilian Journal of Chemical Engineering Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ Brazilian Journal of Chemical Engineering, Volume: 30, Issue: 1, Pages: 13-21, Published: MAR 2013 Brazilian Journal of Chemical Engineering, Vol 30, Iss 1, Pp 13-21 (2013) |
| Popis: | The equilibrium and thermodynamics of azo dye (tartrazine and allura red) biosorption onto Spirulina platensis biomass were investigated. The equilibrium curves were obtained at 298, 308, 318 and 328 K, and four isotherm models were fitted the experimental data. Biosorption thermodynamic parameters (ΔG, ΔH and ΔS) were estimated. The results showed that the biosorption was favored by a temperature decrease. For both dyes, the Sips model was the best to represent the equilibrium experimental data (R²>0.99 and ARE |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|