Adsorption of Reactive Dye onto Uçá Crab Shell (Ucides cordatus): Scale-Up and Comparative Studies
| Autor: | Karla Silvana Menezes Gadelha de Sousa, Genaro Zenaide Clericuzi, Andrea Lopes de Oliveira Ferreira, Maria Eduarda Araújo Pessoa, José Cavalcante de Queiroz Neto, Maria Clara de Souza Soares |
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| Rok vydání: | 2021 |
| Předmět: |
scale-up
Technology dye Control and Optimization Renewable Energy Sustainability and the Environment crab shell adsorption Shell (structure) Analytical chemistry Energy Engineering and Power Technology Kinetic energy Isothermal process chemistry.chemical_compound Adsorption chemistry Reactive dye Freundlich equation Point of zero charge Electrical and Electronic Engineering Fourier transform infrared spectroscopy Engineering (miscellaneous) Energy (miscellaneous) |
| Zdroj: | Energies, Vol 14, Iss 5876, p 5876 (2021) Energies; Volume 14; Issue 18; Pages: 5876 |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en14185876 |
| Popis: | The growing interest in using low-cost methods that use natural sources makes the study of adsorption processes increasingly frequent and common. Thus, the use of uçá crab shell (Ucides cordatus) in the adsorption of reactive dye (reactive blue 222) was studied in two systems (S1 and S2) in a finite bath, with a scale-up of 12 times and considering different forms of agitation. The biosorbent material was previously characterized from FTIR and EDX spectroscopies, SEM, physical adsorption of N2, and point of zero charge. The kinetic study allowed modeling the experimental data and defining the equilibrium time for the S1 system as 400 min, and the S2 system as 360 min. The equilibrium adsorption capacities are 3.623 mg·g−1 (S1) and 4.191 mg·g−1 (S2). The pseudo-second-order (PSO) model best described the experimental data. The favorable multilayer adsorption was confirmed for the isothermal analysis, and the Freundlich and Sips models represented the experimental data of S1 and S2, respectively. The results obtained are positive indications of the scale-up of the S2 system. |
| Databáze: | OpenAIRE |
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