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

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 capacit...

Full description

Bibliographic Details
Authors: Silva, Luis Henrique Mendes da, Elias, Megg Madonyk Cota, Ferreira, Gabriel Max Dias, Almeida, Francine Tatiane Rezende de, Rosa, Nathália Cristina Martins, Silva, Isabela Almeida, Filgueiras, Jefferson Gonçalves, Azevedo, Eduardo Ribeiro de, Melo, Tânia Márcia Sacramento, Gil, Laurent Frédéric, Gurgel, Leandro Vinícius Alves
Format: article
Status:Published version
Publication Date:2019
Country:Brasil
Institution:Universidade Federal de Viçosa (UFV)
Repository:LOCUS Repositório Institucional da UFV
Language:English
OAI Identifier:oai:locus.ufv.br:123456789/24029
Online Access:https://doi.org/10.1016/j.jcis.2018.08.109
http://www.locus.ufv.br/handle/123456789/24029
Access Level:Open access
Keyword:Mixed esters
Sugarcane bagasse
13C Multiple Cross-Polarization solid-state NMR
Metal ion
Adsorption
Isothermal titration calorimetry
Description
Summary: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.

Similar Items