Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/11184
Title: Synthesis and application of sugarcane bagasse cellulose mixed esters. Part I : removal of Co2+ and Ni2+ from single spiked aqueous solutions in batch mode using sugarcane bagasse cellulose succinate phthalate.
Authors: Carvalho, Megg Madonyk Cota Elias
Ferreira, Gabriel Max Dias
Almeida, Francine Tatiane Rezende de
Rosa, Nathália Cristina Martins
Silva, Isabela Almeida
Filgueiras, Jefferson Gonçalves
Azevedo, Eduardo Ribeiro de
Silva, Luis Henrique Mendes da
Melo, Tânia Márcia Sacramento
Gil, Laurent Frédéric
Gurgel, Leandro Vinícius Alves
Keywords: 13C Multiple Cross-Polarization solid-state
NMR
Adsorption
Isothermal titration calorimetry
Metal ion
Issue Date: 2019
Citation: CARVALHO, M. M. C. E. et al. Synthesis and application of sugarcane bagasse cellulose mixed esters. Part I : removal of Co2+ and Ni2+ from single spiked aqueous solutions in batch mode using sugarcane bagasse cellulose succinate phthalate. Journal of Colloid and Interface Science, v. 533, p. 678-691, jan. 2019. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0021979718310324>. Acesso em: 7 mar. 2019.
Abstract: Sugarcane bagasse cellulose mixed ester succinate phthalate (SBSPh) was synthesized by a novel one-pot reaction method. The effects of temperature, time and mole fraction of succinic anhydride (χSA) on the responses weight gain (wg), number of carboxylic acid groups (nT,COOH), and adsorption capacity (q) of Co2+ and Ni2+ were evaluated by a 23 experimental design. The chemical structure of the material was elucidated by Fourier transform infrared, 13C Multiple Cross-Polarization solid-state NMR spectroscopy and 1H NMR relaxometry. The best SBSPh synthesis condition (100 °C, 11 h, χSA of 0.2) yielded a wg of 59.1%, nT,COOH of 3.41 mmol g−1, and values of qCo2+ and qNi2+ of 0.348 and 0.346 mmol g−1, respectively. The Sips model fitted better the equilibrium data, and the maximum adsorption capacities (pH 5.75 and 25 °C) estimated by this model were 0.62 and 0.53 mmol g−1 for Co2+ and Ni2+, respectively. The ΔadsH° values estimated by isothermal titration calorimetry were 8.43 and 7.79 kJ mol−1 for Co2+ and Ni2+, respectively. Desorption and re-adsorption efficiencies were evaluated by a 22 experimental design, which showed that SBSPh adsorbent can be recovered and reused without significant loss of adsorption capacity.
URI: http://www.repositorio.ufop.br/handle/123456789/11184
metadata.dc.identifier.uri2: https://www.sciencedirect.com/science/article/pii/S0021979718310324
metadata.dc.identifier.doi: https://doi.org/10.1016/j.jcis.2018.08.109
ISSN: 0021-9797
Appears in Collections:DEQUI - Artigos publicados em periódicos

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