Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/34493

TitleDevelopment of porous alumina membranes for treatment of textile effluent
Author(s)Silva, Késia Karina O. S.
Paskocimas, Carlos A.
Oliveira, Fernando R.
Nascimento, José Heriberto Oliveira do
Zille, Andrea
KeywordsCeramic
Alumina
Porous membranes
Textile effluent
Filtration
Issue date2016
PublisherTaylor & Francis
JournalDesalination and water treatment
CitationKésia 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
Abstract(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.
Typearticle
DescriptionPublished online: 27 Feb 2015
URIhttp://hdl.handle.net/1822/34493
DOI10.1080/19443994.2015.1018333
ISSN1944-3994
1944-3986
Peer-Reviewedyes
AccessopenAccess
Appears in Collections:DET/2C2T - Artigos em revistas internacionais com arbitragem científica

Files in This Item:
File Description SizeFormat 
19443994_2E2015_2E1018333.pdfPaper258 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu Currículo DeGóis