Treatment of textile effluents by membrane technologies

Fersi, Cheïma; Gzara, Lassâad; Dhahbi, Mahmoud

doi:10.1016/j.desal.2005.03.087

Cited by 165 publications

(77 citation statements)

References 11 publications

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“…To the best of the authors' knowledge previous studies have focused on making synthetic feed simulating dye-bath effluent (Irena et al, 2007) or using biologically treated wastewater to serve as feed to NF (Fersi et al, 2005). Treated effluents from other conventional methods have also been used as feed to NF (Khouni et al, 2011;Thamaraiselvan and Noel, 2015).…”

Section: Introductionmentioning

confidence: 99%

The applicability of nanofiltration for the treatment and reuse of textile reactive dye effluent

Chollom¹,

Rathilal²,

Pillay³

et al. 2015

WSA

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The main aim of the study was to test the feasibility of using nanofiltration (NF) processes for the treatment of reactive dyebath effluents from the textile industry, in order to recover the water and chemicals (salts) for reuse purposes. The study of the reusability of nanofiltered water for dyeing has been given little or no attention. About 30% of reactive dyes remain unfixed on fibres; the unfixed dyes are responsible for the colouration in effluents. Membrane processes were employed to treat reactive dye-bath effluents to recover the salts and water. Investigations were conducted firstly with ultrafiltration (UF) used as a pretreatment for NF. Secondly, evaluations were performed for 2 types of NF membranes (SR90 and NF90), in terms of quality of permeate produced and fluxes achieved for 2 different samples of effluent. The effect of cleaning on membrane performance was assessed. A reusability test was carried out on both permeate samples for dyeing light and dark shade recipes. The use of UF as pre-treatment to NF resulted in rejection of colloidal substances > 90% and a 15% flux improvement. Permeate from NF90 had a conductivity of 76 µS/cm and total organic carbon (TOC) of 20 mg/ℓ, as compared to SR90 which had a conductivity of 8.3 mS/cm and a TOC of 58 mg/ℓ. Light shade from NF90 gave satisfactory results on dyeing, with no colour difference. However a variation in colour was noticed when the medium sample was used to dye the light shade. Both NF permeates gave satisfactory results when used to dye the dark shades. Permeate from NF90 was within the accepted range for reuse, while permeate from SR90 had a higher salt recovery. Chemical cleaning resulted in 80% flux recovery. From the reusability test it was concluded that permeate from NF90 met the reuse criteria for feed water to the dye bath.

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Section: Introductionmentioning

confidence: 99%

The applicability of nanofiltration for the treatment and reuse of textile reactive dye effluent

Chollom¹,

Rathilal²,

Pillay³

et al. 2015

WSA

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“…Fersi et al (2005) found that the use of NF after biological treatment gives more than 90 % of removal of color, turbidity and TDS. Coagulation/ flocculation (C/F) can be also used prior to Rierra-Torres et al (2010) found that the combination of C/F and NF almost provided more than 90 % of color retention for different dyes solutions.…”

Section: Introductionmentioning

confidence: 99%

New treatment at source approach using combination of microfiltration and nanofiltration for dyeing effluents reuse

Masmoudi

Trabelsi

Ellouze

et al. 2013

Int. J. Environ. Sci. Technol.

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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.

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“…Many methods are available for the removal of pollutants from water, the most important of which are biodegradation, flocculation-coagulation and adsorption [3][4][5]. Also membrane separation technologies have been used for the separation of dyes [6,7]. Among membrane processes, the nanofiltration is the most suitable for the decolouration of effluent from textile industry.…”

Section: Introductionmentioning

confidence: 99%

Study of the combining adsorption-microfiltration process for the treatment of coloured waters

Addaou¹,

Laajeb²,

Lahsini³

et al. 2012

Bol. Soc. Esp. Ceram. Vidr.

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Generally textile effluents are highly coloured, contain non-biodegradable compounds and they have high content of solid wastes, comprising fibres and paper wastes. The discharge of such effluents in the environment is worrying for both toxicological and esthetical reasons. The aim of the present work is to study the performances of the combining microfiltration-adsorption process for the treatment of coloured waters. Methylene Blue (MB) was used as model compound. The effects of significant operating parameters such as transmembrane pressure (TMP) and bentonite concentration on the process performance characterized by flux and rejection factor were investigated. Experiments carried out with Methylene Blue solutions confirmed the potential of this combined process for the treatment of dyed waters. keywords: Bentonite, clay, Methylene Blue, adsorption, microfiltration Estudio del proceso combinado de adsorcion-microfiltracion en el tratamiento de aguas coloreadasNormalmente los efluentes de la industria textil están coloreados y contienen compuestos no biodegradables además de residuos sólidos, fibras y residuos de papel. La liberación de tales efluentes al ambiente es preocupante tanto por razones estéticas como toxicológicas. El propósito del presente trabajo es realizar el estudio de las prestaciones del proceso combinado de adsorción-microfiltración para el tratamiento de aguas coloreadas. Se utilizó Azul de Metileno como compuesto tipo. La influencia de parámetros de operación tales como Presión transmembrana y la concentración de bentonita en el comportamiento del proceso, caracterizado por el flujo del permeado y el factor de retorno que fueron los parámetros estudiados. Los experimentos realizados con las soluciones de Azul de Metileno han confirmado el potencial del proceso combinado para el tratamiento de las aguas teñidas. Vol 51, 3, 165-168, mayo-junio 2012 iSSn 0366-3175. eiSSn 2173-0431.

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Treatment of textile effluents by membrane technologies

Cited by 165 publications

References 11 publications

The applicability of nanofiltration for the treatment and reuse of textile reactive dye effluent

The applicability of nanofiltration for the treatment and reuse of textile reactive dye effluent

New treatment at source approach using combination of microfiltration and nanofiltration for dyeing effluents reuse

Study of the combining adsorption-microfiltration process for the treatment of coloured waters

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