Development of porous alumina membranes for treatment of textile effluent

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dc.contributor.authorSilva, Késia Karina de Oliveira Souto
dc.contributor.authorPaskocimas, Carlos Alberto
dc.contributor.authorOliveira, Fernando R.
dc.contributor.authorNascimento, José Heriberto Oliveira do
dc.contributor.authorZille, Andrea
dc.date.accessioned2022-10-11T19:34:44Z
dc.date.available2022-10-11T19:34:44Z
dc.date.issued2015-02-27
dc.description.resumoCeramic porous membranes sintered at two different temperature using polyvinyl alcohol and ethylene glycol as binders, and composed of two types of α-alumina with different parti- cle sizes were investigated for the microfiltration of a textile effluent containing indigo dye, auxiliaries, heavy metals, oils, and solids. The physicochemical properties of the membranes and effluent were evaluated. X-ray diffraction, energy dispersive X-ray fluorescence spectros- copy, differential scanning calorimetry, and thermogravimetric analysis confirm that the thin membrane is composed of high crystalline and pure α-alumina. Scanning electron microscopy observation indicates that the membranes have smooth porous surface making it suitable for microfiltration applications. The membrane sintered at 1,450 ̊C exhibited higher water absorp- tion (WA) and apparent porosity than that sintered at 1,475 ̊C. The apparent specific gravity and flexural strength are in inverse correlation with the WA due to the enhanced densification of the membranes. The filtered effluent was evaluated using a membrane with an average pore size of 0.4 μm and a total porosity of 29.6%. The average values of rejection were 90% for color, 93% for suspended solids, 95% for turbidity, 60% for metals, and 73% for chemical oxygen demand. These results demonstrate that low-cost ceramic alumina membranes are a very promising advanced treatment for textile industrial effluentspt_BR
dc.identifier.citationSILVA, Késia Karina Oliveira Souto; PASKOCIMAS, Carlos Alberto; OLIVEIRA, Fernando R.; NASCIMENTO, José Heriberto Oliveira do; ZILLE, Andrea. Development of porous alumina membranes for treatment of textile effluent. Desalination And Water Treatment, [S. l.], v. 57, n. 6, p. 2640-2648, 27 fev. 2015. Informa UK Limited. DOI: http://dx.doi.org/10.1080/19443994.2015.1018333. Disponível em: https://www.tandfonline.com/doi/abs/10.1080/19443994.2015.1018333?journalCode=tdwt20. Acesso em: 11 abr. 2021.pt_BR
dc.identifier.doi10.1080/19443994.2015.1018333
dc.identifier.issnPrint: 1944-3994 Electronic: 1944-3986
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/49547
dc.languageenpt_BR
dc.publisherTaylor & Francispt_BR
dc.subjectCeramicpt_BR
dc.subjectAluminapt_BR
dc.subjectPorous membranespt_BR
dc.subjectTextile effluentpt_BR
dc.subjectFiltrationpt_BR
dc.titleDevelopment of porous alumina membranes for treatment of textile effluentpt_BR
dc.typearticlept_BR

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