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

[Display omitted] 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...

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Published in:Journal of colloid and interface science 2019-01, Vol.533, p.678-691
Main Authors: Elias, Megg Madonyk Cota, Ferreira, Gabriel Max Dias, de Almeida, Francine Tatiane Rezende, Rosa, Nathália Cristina Martins, Silva, Isabela Almeida, Filgueiras, Jefferson Gonçalves, de Azevedo, Eduardo Ribeiro, da Silva, Luis Henrique Mendes, Melo, Tânia Márcia Sacramento, Gil, Laurent Frédéric, Gurgel, Leandro Vinícius Alves
Format: Article
Language:English
Subjects:
13C Multiple Cross-Polarization solid-state NMR
Adsorption
Isothermal titration calorimetry
Metal ion
Mixed esters
Sugarcane bagasse
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Summary:[Display omitted] 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.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2018.08.109