Reactive dyes rejection and textile effluent treatment study using ultrafiltration and nanofiltration processes

Aouni, Anissa; Fersi, Cheïma; Cuartas-Uribe, B.; Bes-Piá, A.; Alcaina–Miranda, M.I.; Dhahbi, Mahmoud

doi:10.1016/j.desal.2012.04.022

Cited by 174 publications

(89 citation statements)

References 54 publications

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“…These include: the nature of the membrane material, the type of solute, solute concentration, and pH (Aouni et al, 2012). During all experiments, the membrane surface was observed to be coloured, with the intensity varying according to the feed solution that was filtered.…”

Section: Resultsmentioning

confidence: 98%

“…With a low contact angle, the hydrophilicity will increase while the propensity for fouling of the membrane is decreased Aouni et al (2012). Lau and Ismail (2009) showed that a small contact angle, which corresponds to the hydrophilic surface of a membrane, could reduce the tendency of the membrane to foul, through preferential wetting of the membrane material by water.…”

Section: Resultsmentioning

confidence: 99%

“…However, the use of these streams does not give a true representation of the effluent from the dye bath and the effects it has on membrane performance in terms of permeate quality and recovery of chemicals for reuse. Typical textile wastewater characteristics have been outlined in the studies of Bisschops and Spanjers (2003); Aouni et al (2012); Kurt et al (2012) and Thamaraiselvan and Noel (2015). Little or no attention has previously been given to the importance of investigating the influences of the use of permeate water obtained from NF processes on the quality of the final textile product; this is a crucial aspect that requires investigation, especially in the integration of membranes for the treatment of reactive dye-bath effluent for recycling purposes.…”

Section: Introductionmentioning

confidence: 99%

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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: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…Do ponto de vista ambiental, o setor têxtil se caracteriza por um elevado consumo de água, bem como pela geração de resíduos sólidos, emissões atmosféricas e efluentes líquidos que possuem grande potencial de contaminação ambiental [1,2,3,4].…”

Section: Introductionunclassified

Análise da utilização de cerâmica vermelha como adsorvente na remoção do corante têxtil Direct Blue de uma solução aquosa

et al. 2017

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A adsorção tem sido estudada como alternativa para tratamento de efluentes têxteis contendo corantes tóxicos, carcinogênicos, mutagênicos e que interferem no equilíbrio dos ecossistemas aquáticos ao serem lançados no ambiente sem adequado tratamento prévio. Este problema é agravado pois até 50% da quantidade de corante aplicado nas etapas de tingimento e de lavagem não se fixa às fibras dos tecidos. O objetivo deste estudo foi avaliar a remoção de cor de uma solução aquosa contendo o corante direct blue, na concentração inicial de 5 g/L, através da adsorção em cerâmica vermelha. Para isto, foram selecionadas as faixas de diâmetro de 1,21 mm a 2,4 mm e de 2,41 mm a 4,8 mm e as massas de 200, 250 e 300 g do adsorvente para cada faixa. Os ensaios foram conduzidos sob agitação constante de 120 rpm a temperatura ambiente, com duração total de 5 horas, para avaliar o desempenho da adsorção a partir dos valores obtidos para remoção de cor. Além disto, os resultados foram ajustados aos modelos cinéticos de pseudo-primeira ordem e pseudo-segunda ordem de Lagergren. Em todas as configurações experimentais avaliadas, o equilíbrio se deu após a primeira hora de ensaio e as remoções de cor variaram de 98,2% a 99,5%. Do ponto de vista da capacidade de adsorção por massa de adsorvente, os melhores resultados foram verificados com massa de 200 g do adsorvente. Constatou-se ainda que os resultados foram moderadamente mais efetivos na faixa de menor de diâmetro com desempenho 0,5% superior à faixa de maiores diâmetros. O modelo cinético de pseudo-segunda ordem se ajustou melhor aos resultados experimentais quando comparado ao de pseudoprimeira ordem. Foi possível concluir através da pesquisa que a cerâmica de argila adquirida na Região Metropolitana de Curitiba foi um material efetivo na remoção do corante Direct Blue de uma solução aquosa. Palavras-chave:Adsorção, direct blue, cerâmica vermelha, cinética. ABSTRACTAdsorption has been studied as an alternative to the treatment of textile effluents containing toxic, carcinogenic, mutagenic dyes that also interfere in the equilibrium of aquatic ecosystems when discharged in the environment without proper previous treatment. This problem is as 50% of the amount of dye applied in the steps of dyeing and laundering does not attach to the fabric fibers. The aim of this study was to evaluate color removal from an aqueous solution containing blue direct dye at an initial concentration of 5 g/L, by the adsorption on ceramic clay. For this purpose, the ranges of diameter of 1.21 mm to 2.4 mm and 2.41 mm to 4.8 mm and the quantities mass of 200, 250 and 300 g of the adsorbent were selected for each range. Assays were carried out under constant agitation of 120 rpm at room temperature, with a total duration of 5 hours, to evaluate the performance of the adsorption from the values obtained for color removal. Furthermore, the results were adjusted to the kinetic pseudo-first order and pseudo-second order models of Lagergren. In all the experimental settings evaluated, the equilibrium was reache...

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“…Due to its excellent properties, the PA-NF membrane is believed to have high potential for the decolourisation of dye wastewater. Even though a considerable amount of literature has been published on the nanofiltration of dyes wastewaters [5][6][7][18][19][20], there have been very limited studies regarding nanofiltration of Congo red (CR) dye using polypiperazine amide (PA) membranes.…”

Section: Introductionmentioning

confidence: 99%

Nanofiltration of hazardous Congo red dye: Performance and flux decline analysis

Hairom

Mohammad

Kadhum

2014

Journal of Water Process Engineering

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Reactive dyes rejection and textile effluent treatment study using ultrafiltration and nanofiltration processes

Cited by 174 publications

References 54 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

Análise da utilização de cerâmica vermelha como adsorvente na remoção do corante têxtil Direct Blue de uma solução aquosa

Nanofiltration of hazardous Congo red dye: Performance and flux decline analysis

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