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Nanofiltration for the possible reuse of water and recovery of sodium chloride salt from textile effluent

Shu, L., Waite, T. D., Bliss, P. J., Fane, A. and Jegatheesan, V. 2005, Nanofiltration for the possible reuse of water and recovery of sodium chloride salt from textile effluent, Desalination, vol. 172, no. 3, pp. 235-243, doi: 10.1016/j.desal.2004.07.037.

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Title Nanofiltration for the possible reuse of water and recovery of sodium chloride salt from textile effluent
Author(s) Shu, L.
Waite, T. D.
Bliss, P. J.
Fane, A.
Jegatheesan, V.
Journal name Desalination
Volume number 172
Issue number 3
Start page 235
End page 243
Publisher Elsevier BV
Place of publication Amsterdam, The Netherlands
Publication date 2005-02-20
ISSN 0011-9164
1873-4464
Keyword(s) dye aggregation
dye rejection
nanofiltration membrane
salt rejection
Summary During the reactive dyeing of cotton, salts such as sodium chloride (NaCI) are placed in a dyebath to aid the exhaustion of various dyes onto the fabric while bases are added to raise the pH from around neutral to pH 11 to achieve fixation. 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, many raw materials are lost in the waste stream ending up in the environment as pollutants. In this study possibilities of reusing the water and salts of dyebaths were investigated using a nanofiltration membrane. When the NaCI concentration in the spent liquor was increased from 10 to 80 g/L, the NaC1 rejection by the membrane was found to decrease initially; however, the NaC1 rejection increased over 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 information is useful for the textile industry in evaluating the treated water quality for the purpose of reuse.
Language eng
DOI 10.1016/j.desal.2004.07.037
Field of Research 099999 Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2005, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039667

Document type: Journal Article
Collection: School of Engineering
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