Treatment of textile plant effluent by nanofiltration and/or reverse osmosis for water reuse

Suksaroj, Chaisri; Héran, Marc; Allègre, C.; Persin, F.

doi:10.1016/j.desal.2004.11.043

Cited by 96 publications

(30 citation statements)

References 8 publications

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“…The conventional techniques used to remove azo dyes (Forgacs et al 2004;Zhu et al 2007;Golob et al 2005;Suksaroj et al 2005) are based on phase transfer without degradation of the contaminant (Gupta et al 2007). In view of this, alternatives for treatment to this kind of contaminant are necessary.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Direct Red 81 mediated by Fenton reactions: multivariate optimization, effect of chloride and sulfate, and acute ecotoxicity assessment

Marson

Paiva

Gonçalves

et al. 2016

Environ Sci Pollut Res

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The role of different operational parameters related to Fenton reactions (pH, concentration of Fe and HO, and reaction time) and of Cl and SO was investigated in the degradation of the azo dye Direct Red 81, expressed in terms of its decolorization. The factorial design and Pareto's charts showed that only Fe concentration and pH influence the decolorization under the conditions evaluated. So, only these parameters were optimized using the response surface model. Under the best experimental conditions (initial pH 2.5, 11 mg L Fe, 78 mg L HO, and 20 min of reaction), 94 % of decolorization was achieved. However, even under the these conditions, but in the presence of Cl and SO , a striking loss of efficiency was observed as the concentration of these ions was increased, due the formation of chloride- and sulfate-iron complexes and less reactive inorganic radicals (Cl and SO). The results show that the presence of Cl is more deleterious, since sulfate-iron complexes are more reactive towards HO, and the SO turns out to favor the degradation. On the other hand, the negative effect of Cl can be compensated by increasing the chloride concentration up to 300 mmol L. In addition, although a high degradation level has been obtained by monitoring the dye absorbance and by HPLC-UV, a low mineralization occurred, being generated degradation products of higher ecotoxicity to Vibrio fischeri, showing the need of subsequent studies to identify these compounds as well as the application of additional treatments aiming the complete mineralization of the dye.

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Section: Introductionmentioning

confidence: 99%

Degradation of Direct Red 81 mediated by Fenton reactions: multivariate optimization, effect of chloride and sulfate, and acute ecotoxicity assessment

Marson

Paiva

Gonçalves

et al. 2016

Environ Sci Pollut Res

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“…Therefore a keen attention and serious efforts are required for the development of the low cost efficient adsorbents for the removal of the toxic wastes. Several previously developed techniques such as adsorption [13][14][15][16][17][18][19], oxidation [20,21], biological treatment [22,23], coagulation and flocculation [24,25], and membrane processes [26,27] are used for the removal of noxious dyes. Among them the adsorption is a widely used technique for the removal of dye due to its simplicity in operation and cheap price compared to other processes.…”

Section: Introductionmentioning

confidence: 99%

Application of least squares support vector regression and linear multiple regression for modeling removal of methyl orange onto tin oxide nanoparticles loaded on activated carbon and activated carbon prepared from Pistacia atlantica wood

Ghaedi

Rahimi

Ghaedi

et al. 2016

Journal of Colloid and Interface Science

107

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“…This has led to reduced extraction of groundwater [7]. Previous studies have been carried out in order to apply reverse osmosis (RO) and nanofiltration for the treatment and reuse of wastewater in other sectors, such as tannery [8] and textile industries [9]. In the steel sector, electrodialysis and ion exchange have been applied for the treatment of wastewater from rinsing of stainless steel etched in nitric acid and hydrofluoric acid [10].…”

Section: Introductionmentioning

confidence: 99%

Efficient Use of Water Resources in the Steel Industry

Colla

Matino

Branca

et al. 2017

Water

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Abstract:In the steel sector water management aims at improving the sustainability of the production cycle, resulting in resource efficiency benefits and in reduced water demand and costs. To be reused, water needs to be cooled and desalinized to avoid salt concentration in water circulation systems. The presented work includes two case studies carried out in an integrated steelmaking plant, respectively, to evaluate the possible implementation of ultrafiltration and reverse osmosis to reduce salt concentration in water streams and to investigate, through modelling and simulation, a process integration solution to improve water efficiency. Results showed that most salts are removed by reverse osmosis and that its coupling with ultrafiltration allows obtaining very high quality water; reuse of desalinated wastewater resulted in being more suitable and economically viable than its discharge. Moreover, modelling and simulation showed that the considered blowdown could be reused without significant changes in the receiving water network area. The industrial implementation of water recovery solutions can lead to a decrease of fresh water consumption, effluent discharge, and to improvement of product quality and equipment service life. The considered desalination technologies are transferable and easily implementable, and modelling and simulation are very useful in order to evaluate process modifications before real implementation.

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Treatment of textile plant effluent by nanofiltration and/or reverse osmosis for water reuse

Cited by 96 publications

References 8 publications

Degradation of Direct Red 81 mediated by Fenton reactions: multivariate optimization, effect of chloride and sulfate, and acute ecotoxicity assessment

Degradation of Direct Red 81 mediated by Fenton reactions: multivariate optimization, effect of chloride and sulfate, and acute ecotoxicity assessment

Application of least squares support vector regression and linear multiple regression for modeling removal of methyl orange onto tin oxide nanoparticles loaded on activated carbon and activated carbon prepared from Pistacia atlantica wood

Efficient Use of Water Resources in the Steel Industry

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