Thermal degradation of monoethylene glycol in aqueous saline solution: evaluation by thermogravimetric and physicochemical analyses
dc.contributor.author | Chiavone Filho, Osvaldo | |
dc.contributor.author | Monteiro, Mateus Fernandes | |
dc.contributor.author | Moura Neto, Mário Hermes de | |
dc.contributor.author | Macedo, G. M. | |
dc.contributor.author | Silva, G. V. | |
dc.contributor.author | Silva, Dannielle Janainne | |
dc.contributor.author | Pereira, L. S. | |
dc.contributor.author | Nascimento, J. F. | |
dc.date.accessioned | 2021-11-12T15:08:45Z | |
dc.date.issued | 2019-06-11 | |
dc.description.embargo | 2030-12-30 | |
dc.description.resumo | In order to represent the thermal effects of the operational conditions of a monoethylene glycol (MEG) regeneration unit, 86 wt % MEG aqueous solutions with salt concentrations up to 5.52 wt % were heated for 56 h in an ebulliometer. Seven analytical techniques were applied to the samples, aiming to evaluate MEG degradation. Results demonstrated that increasing the sodium chloride concentration from 0 to 5.52 wt % reduced the MEG thermal stability time from 44 to 8 h. Thermogravimetric analysis was the most adequate studied technique to quantify MEG thermal degradation. Measurements of MEG degradation were correlated, using an allometric expression for each sodium chloride concentration. The salt-free solutions presented 7.2% MEG degradation after 56 h heating, while for 5.52 wt % NaCl it increased to 21.1%. As expected, sodium chloride concentration and time of exposure to temperatures up to 140 °C are important variables for monitoring MEG thermal degradation, especially in the flash evaporator | pt_BR |
dc.identifier.citation | MONTEIRO, M. F.; MOURA-NETO, M. H.; MACEDO, G. M.; SILVA, G. V.; SILVA, D. J.; PEREIRA, L. S.; NASCIMENTO, J. F. ; CHIAVONE-FILHO, O. . Thermal Degradation of Monoethylene Glycol in Aqueous Saline Solution: Evaluation by Thermogravimetric and Physicochemical Analyses. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v. 58, p. 12159-12165, 2019. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0957582019300631?via%3Dihub. Acesso em: 16 jun. 2021. https://doi.org/10.1021/acs.iecr.9b01914. | pt_BR |
dc.identifier.doi | 10.1021/acs.iecr.9b01914 | |
dc.identifier.issn | 1520-5045 | |
dc.identifier.uri | https://repositorio.ufrn.br/handle/123456789/44903 | |
dc.language | en | pt_BR |
dc.publisher | ACS Publications | pt_BR |
dc.subject | Thermal Degradation | pt_BR |
dc.subject | Monoethylene Glycol | pt_BR |
dc.subject | Evaluation | pt_BR |
dc.subject | Thermogravimetric | pt_BR |
dc.title | Thermal degradation of monoethylene glycol in aqueous saline solution: evaluation by thermogravimetric and physicochemical analyses | pt_BR |
dc.type | article | pt_BR |
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