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https://hdl.handle.net/1822/34493
Título: | Development of porous alumina membranes for treatment of textile effluent |
Autor(es): | Silva, Késia Karina O. S. Paskocimas, Carlos A. Oliveira, Fernando R. Nascimento, José Heriberto Oliveira do Zille, Andrea |
Palavras-chave: | Ceramic Alumina Porous membranes Textile effluent Filtration |
Data: | 2016 |
Editora: | Taylor and Francis |
Revista: | Desalination and water treatment |
Citação: | Késia Karina O.S. Silva, Carlos A. Paskocimas, Fernando R. Oliveira, José H.O. Nascimento & Andrea Zille (2016): Development of porous alumina membranes for treatment of textile effluent, Desalination and Water Treatment, DOI: 10.1080/19443994.2015.1018333 |
Resumo(s): | Ceramic 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 particle 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 spectroscopy, 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 absorption (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 effluents. |
Tipo: | Artigo |
Descrição: | Published online: 27 Feb 2015 |
URI: | https://hdl.handle.net/1822/34493 |
DOI: | 10.1080/19443994.2015.1018333 |
ISSN: | 1944-3994 1944-3986 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | DET/2C2T - Artigos em revistas internacionais com arbitragem científica |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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19443994_2E2015_2E1018333.pdf | Paper | 258 kB | Adobe PDF | Ver/Abrir |