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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 11, No. 4, 2014, pp. 1007-1016
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Bioline Code: st14099
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 11, No. 4, 2014, pp. 1007-1016
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New treatment at source approach using combination of microfiltration and nanofiltration for dyeing effluents reuse
Masmoudi, G.; Trabelsi, R.; Ellouze, E. & Amar, R. B.
Abstract
Textile effluents are considered among the most
polluted wastewaters all over the world. Among different
textile processes, dyeing is the operation that produces the
most important amounts of chemical pollution. Many
studies have been carried out toward the treatment of these
hazardous effluents, and a variety of techniques have been
applied for this aim. In this work, the effluents coming from
different steps of the dyeing cycle were treated following
different mixtures of baths using membrane technology.
Nanofiltration (NF) experiments were performed for color
removal, but membrane fouling still a major limitation. To
enhance NF performances, microfiltration (MF) was carried
out as pretreatment to NF. The results showed almost above
99 % of color and turbidity removal and also an important
decrease in COD, chloride and salts contents with an
improvement in the MF and NF stabilized fluxes of different
mixtures compared to that corresponding to the dyeing
effluent treated separately. In order to accomplish a full
reuse cycle, dyeing experiments were performed using the
combined system (MF/NF) permeates. Results were evaluated
regarding total color difference between samples and
a standard test done with fresh water.
Keywords
Baths mixtures; Dyeing cycle; Microfiltration; Nanofiltration; Reuse
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