Modeling adsorption of copper(II), cobalt(II) and nickel(II) metal ions from aqueous solution onto a new carboxylated sugarcane bagasse. Part II : Optimization of monocomponent fixed-bed column adsorption.
dc.contributor.author | Xavier, Amália Luísa Pedrosa | |
dc.contributor.author | Herrera Adarme, Oscar Fernando | |
dc.contributor.author | Furtado, Laís Milagres | |
dc.contributor.author | Ferreira, Gabriel Max Dias | |
dc.contributor.author | Silva, Luis Henrique Mendes da | |
dc.contributor.author | Gil, Laurent Frédéric | |
dc.contributor.author | Gurgel, Leandro Vinícius Alves | |
dc.date.accessioned | 2018-05-21T12:39:20Z | |
dc.date.available | 2018-05-21T12:39:20Z | |
dc.date.issued | 2018 | |
dc.description.abstract | In the second part of this series of studies, the monocomponent adsorption of Cu2+, Co2+ and Ni2+ onto STA adsorbent in a fixed-bed column was investigated and optimized using a 22 central composite design. The process variables studied were: initial metal ion concentration and spatial time, and the optimized responses were: adsorption capacity of the bed (Qmax), efficiency of the adsorption process (EAP), and effective use of the bed (H). The higher Qmax for Cu2+, Co2+ and Ni2+ were 1.060, 0.800 and 1.029 mmol/g, respectively. The breakthrough curves were modeled by the original Thomas and Bohart- Adams models. The changes in enthalpy (DadsH ) of adsorption of the metal ions onto STA were determined by isothermal titration calorimetry (ITC). The values of DadsH were in the range of 3.0–6.8 kJ/mol, suggesting that the adsorption process involved physisorption. Desorption (Edes) and readsorption (Ere-ads) of metal ions from the STA adsorbent were also investigated in batch mode, and the optimum conditions were applied for three cycles of adsorption/desorption in a fixed bed column. For these cycles, the lowest values of Edes and Ere-ads were 95 and 92.3%, respectively, showing that STA is a promising candidate for real applications on a large scale. | pt_BR |
dc.identifier.citation | XAVIER, A. L. P. et al. Modeling adsorption of copper(II), cobalt(II) and nickel(II) metal ions from aqueous solution onto a new carboxylated sugarcane bagasse. Part II : Optimization of monocomponent fixed-bed column adsorption. Journal of Colloid and Interface Science, v. 516, p. 431-445, 2018. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0021979718300833?via%3Dihub>. Acesso em: 05 abr. 2018. | pt_BR |
dc.identifier.issn | 00219797 | |
dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/9961 | |
dc.identifier.uri2 | https://www.sciencedirect.com/science/article/pii/S0021979718300833?via%3Dihub | pt_BR |
dc.language.iso | en_US | pt_BR |
dc.rights | restrito | pt_BR |
dc.subject | Fixed-bed adsorption | pt_BR |
dc.subject | Modeling | pt_BR |
dc.subject | Metal ion | pt_BR |
dc.subject | Design of experiments | pt_BR |
dc.title | Modeling adsorption of copper(II), cobalt(II) and nickel(II) metal ions from aqueous solution onto a new carboxylated sugarcane bagasse. Part II : Optimization of monocomponent fixed-bed column adsorption. | pt_BR |
dc.type | Artigo publicado em periodico | pt_BR |
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