Comparison between nanofiltration and forward osmosis in the treatment of dye solutions

Ammar, Abdalmunem, Dofan, Ibrahim, Jegatheesan, Veeriah, Muthukumaran, Shobha and Shu, Li 2015, Comparison between nanofiltration and forward osmosis in the treatment of dye solutions, Desalination and water treatment, vol. 54, no. 4-5, pp. 853-861, doi: 10.1080/19443994.2014.908419.

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Title Comparison between nanofiltration and forward osmosis in the treatment of dye solutions
Author(s) Ammar, Abdalmunem
Dofan, Ibrahim
Jegatheesan, Veeriah
Muthukumaran, Shobha
Shu, Li
Journal name Desalination and water treatment
Volume number 54
Issue number 4-5
Start page 853
End page 861
Total pages 9
Publisher Taylor & Francis
Place of publication London, Eng.
Publication date 2015
ISSN 1944-3994
Keyword(s) Dye
Forward osmosis
Textile effluent
Summary Colour removal and the flux behaviour of nanofiltration (NF-DOW FILMTEC-NF245) and forward osmosis (FO-a flat sheet cellulose triacetate membrane with a woven embedded backing support) membranes were investigated in this study. The NF membrane was employed to perform dye removal experiments with aqueous solutions containing 15 g/L of NaCl and different concentrations of Acid Green 25, Remazol Brilliant Orange FR and Remazol Blue BR dyes. The increase in dye concentration resulted in a decline in water permeability and an increase in colour removal. When the concentrations of dye solutions varied from 250 to 1000 mg/L, at 0.8 bar of trans-membrane pressure, the NF system exhibited a steady permeate flux of more 30 L/m2h and a colour removal of more than 99%; salt rejection was more than 20.0%. Furthermore, the FO system possessed high dye rejection efficiency (almost 100%), with low permeate flux of around 2.0 L/m2h, when using dye solutions as feed streams and seawater as draw stream. The mode of operation (either FO or pressure retarded osmosis (PRO) did not change the flux significantly but PRO mode always produced higher fluxes than FO mode under the operating conditions used in this study. While both NF and FO can be used to reduce the volume of effluent containing dyes from textile industries, the energy spent in NF on applied pressure can be substituted by the osmotic pressure of draw solution in FO when concentrated draw solutions such as sea water or reverse osmosis concentrate are readily available.
Language eng
DOI 10.1080/19443994.2014.908419
Field of Research 090404 Membrane and Separation Technologies
090508 Water Quality Engineering
090407 Process Control and Simulation
Socio Economic Objective 829803 Management of Liquid Waste from Plant Production (excl. Water)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Balaban Desalination Publications
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