Synthesis and application of sugarcane bagasse cellulose mixed esters. Part II : removal of Co2+ and Ni2+ from single spiked aqueous solutions in batch and continuous mode.

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Autor(es): dc.creatorAlmeida, Francine Tatiane Rezende de-
Autor(es): dc.creatorCarvalho, Megg Madonyk Cota Elias-
Autor(es): dc.creatorXavier, Amália Luísa Pedrosa-
Autor(es): dc.creatorFerreira, Gabriel Max Dias-
Autor(es): dc.creatorSilva, Isabela Almeida-
Autor(es): dc.creatorFilgueiras, Jefferson Gonçalves-
Autor(es): dc.creatorAzevedo, Eduardo Ribeiro de-
Autor(es): dc.creatorSilva, Luís Henrique Mendes da-
Autor(es): dc.creatorGil, Laurent Frédéric-
Autor(es): dc.creatorGurgel, Leandro Vinícius Alves-
Data de aceite: dc.date.accessioned2025-08-21T15:09:02Z-
Data de disponibilização: dc.date.available2025-08-21T15:09:02Z-
Data de envio: dc.date.issued2020-06-10-
Data de envio: dc.date.issued2020-06-10-
Data de envio: dc.date.issued2019-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/12328-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0021979719306022-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.jcis.2019.05.046-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1003587-
Descrição: dc.descriptionSugarcane bagasse cellulose succinate trimellitate (SBST) was prepared by a one-pot synthesis method. The synthesis of this novel mixed ester was investigated by a 23-factorial design. The parameters investigated were time, temperature, and succinic anhydride mole fraction (χSA). The responses evaluated were the adsorption capacity (qCo2+ and qNi2+), weight gain (wg), and number of carboxylic acid groups (nT,COOH). 13C Multiple Cross-Polarization solid-state NMR spectroscopy, 1H NMR relaxometry, and Fourier-transform infrared spectroscopy were used to elucidate the SBST structure. The best SBST reaction conditions were 100 °C, 660 min, and χSA of 0.2, which yielded SBST with a wg of 57.1%, nT,COOH of 4.48 mmol g−1, and qCo2+ and qNi2+ of 0.900 and 0.963 mmol g−1, respectively. The maximum adsorption capacities (Qmax) (pH 5.75, 25 °C) estimated by the Redlich-Peterson model for Co2+ and Ni2+ were 1.16 and 1.29 mmol g−1. The ΔadsH° values for Co2+ and Ni2+ adsorption obtained by isothermal titration calorimetry were 8.03 and 6.94 kJ mol−1. Regeneration and reuse of SBST were investigated and the best conditions applied for fixed-bed column adsorption in five consecutive cycles. SBST was fully desorbed and Qmax values for Co2+ (0.95 mmol g−1) and Ni2+ (1.02 mmol g−1) were estimated using the Bohart-Adams model.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectSugarcane bagasse mixed ester-
Palavras-chave: dc.subject13C multiple cross-polarization solid-state-
Palavras-chave: dc.subjectNickel-
Palavras-chave: dc.subjectCobalt-
Título: dc.titleSynthesis and application of sugarcane bagasse cellulose mixed esters. Part II : removal of Co2+ and Ni2+ from single spiked aqueous solutions in batch and continuous mode.-
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