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Reclaiming spent liquor from cotton reactive dyebaths using nanofiltration membrane for possible reuse of water and salt

Shu, L., Waite, T. D., Bliss, P. J., Fane, A. G., Pailthorpe, M. T. and Jegatheesan, V. 2003, Reclaiming spent liquor from cotton reactive dyebaths using nanofiltration membrane for possible reuse of water and salt, in Water quality management and the environment in Asia (Asian waterqual 2003). : selected proceedings of Asian Waterqual 2003, the IWA Asia-Pacific Regional Conference, held in Bangkok, Thailand, 19-23 October 2003, IWA Publishing, London, England.

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Title Reclaiming spent liquor from cotton reactive dyebaths using nanofiltration membrane for possible reuse of water and salt
Author(s) Shu, L.
Waite, T. D.
Bliss, P. J.
Fane, A. G.
Pailthorpe, M. T.
Jegatheesan, V.
Conference name IWA Asia-Pacific Regional Conference (2003 : Bangkok, Thailand)
Conference location Bangkok, Thailand
Conference dates 20-22 Oct. 2003
Title of proceedings Water quality management and the environment in Asia (Asian waterqual 2003). : selected proceedings of Asian Waterqual 2003, the IWA Asia-Pacific Regional Conference, held in Bangkok, Thailand, 19-23 October 2003
Editor(s) Panswad, T.
Polprasert, C.
Karnchanawong, S.
Publication date 2003
Series Water science and technology
Conference series IWA Asia-Pacific Regional Conference
Publisher IWA Publishing
Place of publication London, England
Keyword(s) dye aggregation
dye rejection
nanofiltration membrane
salt associates
salt rejection
Summary During dyeing, salts are placed in a dyebath to aid the fixation of various dyes on to the fabric while bases are added to raise the pH from around neutral to pH 11. Afterwards, the used dyebath solution, called dyebath spent liquor, is discharged with almost all the salts and bases added as well as unfixed dyes. Consequently, a lot of raw materials are lost in the waste stream ending up in the environment as pollutants. In this study, possibilities of reusing water and salts of dyebathes were investigated, using a nanofiltration membrane. When the salt concentration in the spent liquor was increased from 10 to 80 g/L, the salt rejection by membrane was found to decrease initially; however, the salt rejection increased over the time, which was not expected. The aggregation of dye was also studied and found to decrease in the concentrate when the salt concentration was increased. This may be due to the aggregation of salt in the concentrate, which explains the increase in salt rejection. This information is useful for the textile industry in evaluating the treated water quality for the purpose of reuse.
ISBN 9781843394822
1843394820
ISSN 0273-1223
Language eng
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category E1.1 Full written paper - refereed
ERA Research output type E Conference publication
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039594

Document type: Conference Paper
Collection: Faculty of Science, Engineering and Built Environment
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