Decolorization of direct dye in textile wastewater by ozonization in a semi-batch bubble column reactor

Turhan, Kadir; Turgut, Zühal

doi:10.1016/j.desal.2008.05.005

Cited by 112 publications

(38 citation statements)

References 25 publications

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“…Dyes play a very important role in various branches of the textile industry; dyes used in this industry are often synthetic, usually derived from two sources: coal tar and petroleum-based intermediates [20][21][22][23][24][25]. Synthetic dyes have become common water pollutants and are usually found in trace quantities in industrial wastewater owing to their good solubility in water [26,27].…”

Section: Dyesmentioning

confidence: 99%

Roles of titanium dioxide and ion-doped titanium dioxide on photocatalytic degradation of organic pollutants (phenolic compounds and dyes) in aqueous solutions: A review

Teh¹,

Mohamed²

2011

Journal of Alloys and Compounds

419

182

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Section: Dyesmentioning

confidence: 99%

Roles of titanium dioxide and ion-doped titanium dioxide on photocatalytic degradation of organic pollutants (phenolic compounds and dyes) in aqueous solutions: A review

Teh¹,

Mohamed²

2011

Journal of Alloys and Compounds

419

182

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“…Some of the important chromophores are -N=N-, -C=O, -NO 2 , and quinoid groups and important auxochromes are -NH 3 , -OH, -SO 3 H, and -CO 2 H. Both chromophore and auxochrome increase the bath chromic effect on a conjugated system of dye. In addition to enhancing the chromophore in the production of colour, auxochromes are also responsible for the solubility of dye and increase its reactivity towards fibres (Turhan et al 2009). …”

Section: Dyesmentioning

confidence: 99%

“…The responsive cleavage of azo linkage is accountable for the development of harmful amines in the effluent. Anthraquinone-based colours are more impervious to degradation because of their fused aromatic structures and in this way, stay coloured for a more extended period of time in the wastewater (Turhan et al 2009;Santos et al 2007). The azo colour and pigment production plants deliver a waste which has low pH, high colour, high organic content, and low risk to biological degradation and can be characterised as a typical dye waste.…”

Section: Environmental Impacts Of Textile Effluentmentioning

confidence: 99%

Recycling and Reuse of Textile Effluent Sludge

Karthik

Rathinamoorthy

2015

Environmental Footprints and Eco-Design of Products and Processes

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In the whole world today there has been a growing awareness of the damage caused to the environment by the haphazard use of chemicals, some of which are very poisonous and carcinogenic. The textile industry has been strongly criticised as being one of the world's worst lawbreakers in terms of pollution because it demands a large amount of water and chemicals. Although air, water, and noise pollution are created at every step of fabric treatment, the most problem-filled is fabric wet processing, in terms of the huge amount of water and goodly number of chemicals used in wet processing and on completion of the process, leftover dyes and chemicals together with water are discharged as effluents. As the amount of sludge created by wastewater treatment increases, effective reuse and safe disposal of sludge becomes most important. This chapter provides comprehensive information about the various methods and techniques in recycling textile effluents and sludge treatment process of textile effluents.

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“…From several decades various methods have been evolved in wastewater treatment such as electrochemical treatment methods [12][13][14], oxidation [15], and ozonation [16]. However, the adsorption process has been proven as a most effective and reliable method for dye removal.…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of hazardous anionic dye “Congo red” from wastewater using waste materials and recovery by desorption

Mittal

Malviya

et al. 2009

Journal of Colloid and Interface Science

662

210

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a b s t r a c tThe present investigation assesses the applicability of waste materials-bottom ash and deoiled soya-for the removal of the colorant Congo red from wastewaters. The adsorption characteristics and dye removal efficiency of adsorbents have been determined by investigating factors such as effect of pH, effect of concentration of the dye, amount of adsorbents, contact time, and temperature. Langmuir, Freundlich, Tempkin, and Dubinin-Radushkevich isotherm models have been used to evaluate the ongoing adsorption. With the help of adsorption isotherm data different thermodynamic parameters such as free energy; enthalpy, and entropy have been calculated. The estimated free energy has been obtained as À21.52 kJ mol À1 for bottom ash and À16.88 kJ mol À1 for deoiled soya. On the basis of pseudo-first-order and pseudo-second-order kinetic equations different kinetic parameters have been obtained. Column operations depicted good adsorptive tendencies for Congo red with 96.95% and 97.14% saturation of dye on bottom ash and deoiled soya, respectively. Regeneration of the saturated columns has been made by eluting NaOH solution and more than 90% dye has been recovered in both cases.

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Decolorization of direct dye in textile wastewater by ozonization in a semi-batch bubble column reactor

Cited by 112 publications

References 25 publications

Roles of titanium dioxide and ion-doped titanium dioxide on photocatalytic degradation of organic pollutants (phenolic compounds and dyes) in aqueous solutions: A review

Roles of titanium dioxide and ion-doped titanium dioxide on photocatalytic degradation of organic pollutants (phenolic compounds and dyes) in aqueous solutions: A review

Recycling and Reuse of Textile Effluent Sludge

Adsorptive removal of hazardous anionic dye “Congo red” from wastewater using waste materials and recovery by desorption

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