Indigo dye waste recovery from blue denim textile effluent: a by-product synergy approach

Wambuguh, Dennis; Chianelli, Russell R.

doi:10.1039/b806213g

Cited by 40 publications

(23 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The seriousness of water pollution depends on the quantity of water and chemicals used in the wet process [23]. The dye concentration in a dye house range from 0.01g/L to 0.25 g/L depending on the type of the dye and the process carried out [61][62][63]. Vat dyes are used at a concentration in the range of 0.05-0.1 g/L [61,63,64], while indigo dyes are used at a concentration of 0.02 g/L [63].…”

Section: Chemicalsmentioning

confidence: 99%

“…The dye concentration in a dye house range from 0.01g/L to 0.25 g/L depending on the type of the dye and the process carried out [61][62][63]. Vat dyes are used at a concentration in the range of 0.05-0.1 g/L [61,63,64], while indigo dyes are used at a concentration of 0.02 g/L [63]. Textile dyestuffs are found to contain a large amount of organic substances which are difficult to degrade and are resistant to aerobic degradation.…”

Section: Chemicalsmentioning

confidence: 99%

See 1 more Smart Citation

Production, Characterization and Treatment of Textile Effluents: A Critical Review

Ananthashankar¹

2013

Chem Eng Process Technol

258

View full text Add to dashboard Cite

Textile industry is one of the major industries in the world that provide employment with no required special skills and play a major role in the economy of many countries. There are three different types of fibres used in the manufacture of various textile products: cellulose fibres, protein fibres and synthetic fibres. Each type of fibre is dyed with different types of dyes. Cellulose fibres are dyed using reactive dyes, direct dyes, napthol dyes and indigo dyes. Protein fibres are dyed using acid dyes and lanaset dyes. Synthetic fibres are dyed using disperse dyes, basic dyes and direct dyes. The textile industry utilizes various chemicals and large amount of water during the production process. About 200 L of water are used to produce 1 kg of textile. The water is mainly used for application of chemicals onto the fibres and rinsing of the final products. The waste water produced during this process contains large amount of dyes and chemicals containing trace metals such as Cr, As, Cu and Zn which are capable of harming the environment and human health. The textile waste water can cause haemorrhage, ulceration of skin, nausea, skin irritation and dermatitis. The chemicals present in the water block the sunlight and increase the biological oxygen demand thereby inhibiting photosynthesis and reoxygenation process. The effluent water discharged from the textile industries undergoes various physio-chemical processes such as flocculation, coagulation and ozonation followed by biological treatments for the removal of nitrogen, organics, phosphorous and metal. The whole treatment process involves three steps: primary treatment, secondary treatment and tertiary treatment. The primary treatment involves removal of suspended solids, most of the oil and grease and gritty materials. The secondary treatment is carried out using microorganisms under aerobic or anaerobic conditions and involves the reduction of BOD, phenol and remaining oil in the water and control of color. The tertiary treatment involves the use of electrodialysis, reverse osmosis and ion exchange to remove the final contaminants in the wastewater. The major disadvantages of using the biological process are that the presence of toxic metals in the effluent prevents efficient growth of microorganisms and the process requires a long retention time. The advanced oxidation processes is gaining attention in the recent days due to the ability to treat almost all the solid components in the textile effluents. The photo oxidation of the effluents is carried out using H 2 O 2 , combination of H 2 O 2 and UV and Combination of TiO 2 and UV. Advanced oxidation process generates low waste and uses hydroxyl radicals (OH • ) as their main oxidative power. The hydroxyl radicals (OH • ) are produced by chemical, electrical, mechanical or radiation energy and therefore advanced oxidation processes are classified under chemical, photochemical, catalytic, photocatalytic, mechanical and electrical processes. The effluents treated with advanced oxidation process were ...

show abstract

Section: Chemicalsmentioning

confidence: 99%

Section: Chemicalsmentioning

confidence: 99%

Production, Characterization and Treatment of Textile Effluents: A Critical Review

Ananthashankar¹

2013

Chem Eng Process Technol

258

View full text Add to dashboard Cite

show abstract

“…Waste water containing indigo is characterised by a moderate amount of chemical oxygen demand (COD), pH, suspended solids, dissolved solids and a dark blue colour. Although colour and COD are some of the important parameters monitored to meet effluent discharge standards, companies are discouraged from treating or recovering the waste dye by cost implications [23].…”

Section: Characterisation Studiesmentioning

confidence: 99%

Dye Removal From Textile Waste Water Through The Adsorption By Pumice Used In Stone Washing

Körlü

Yapar

Perıncek

et al. 2015

Autex Research Journal

View full text Add to dashboard Cite

Because the waste production is inevitable in almost all industries, the elimination of these wastes is a requirement in terms of environmental regulations and welfare of all the creatures in the future. In this study, the use of the waste pumice stones of a denim washing mill is intended to eliminate the pollutant by a waste material and obtain economic benefits by converting it to the adsorbent. The pollutants in the effluents obtained from three different localisations of waste water treatment system of the same factory were removed through the adsorption. The experimental studies were carried out in three different steps; characterisation of adsorbent before and after adsorption; adsorption isotherm studies and biological oxygen demand (BOD), chemical oxygen demand (COD) measurements. Characterisation studies showed that the waste pumice has almost the same structural properties with unused one except the existence of some organic residues coming from washing process. The results of adsorption studies conducted at the adsorbent concentrations changing from 5 to 35 g/l revealed that the decolourisation was initial dye-concentration dependent. According to the BOD and COD measurements, the supernatants obtained at the end of adsorption could be assumed as somewhat polluted and this result indicates that the organic impurities other than indigo were also removed through the adsorption.

show abstract

“…Furthermore, they are potentially carcinogenic and mutagenic, and may also cause allergenic dermatitis and skin irritation even in small amounts. 1,2 Because of these reasons, the discharge of dye effluents requires special handling and proper and effective treatments, not just for the possible reuse of disinfected water, but also to promote a cleaner and healthier environment.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5] More than 60% of the world production of dyes is utilized in textile industries, and during the processing about 10-20% is discharged as effluents. 1,2 These dye effluents distract the food web in water because their intense color reduces the light transmission, and thus inhibits the growth of most aquatic plants, as well as raises the biological oxygen demand (BOD) and the chemical oxygen demand (COD) in the water. Furthermore, they are potentially carcinogenic and mutagenic, and may also cause allergenic dermatitis and skin irritation even in small amounts.…”

Section: Introductionmentioning

confidence: 99%

Fast and complete degradation of Congo red under visible light with Er3+ and Nd3+ ions doped TiO2 nanocomposites

et al. 2011

View full text Add to dashboard Cite

We report fast and complete destruction of the dye Congo red (CR) under visible light in the presence of Nd 3+ and Er 3+ doped TiO 2 nanocomposites (NCs). TiO 2 NCs with general composition TiO 2 [R 2 O 3 ] x , {x=0.1, 0.2; R≡ Nd, Er} and particle size 12-16 nm were synthesized through co-precipitation/hydrolysis (CPH). A set of similar composites was also prepared through solid state reaction (SSR) route, which produced 31-47 nm particles. After characterization, visible light photocatalytic activity of all the samples was recorded for the degradation of CR. NCs with molar concentration x=0.2 of both doping types produced close to 100% degradation in 180 min. The apparent rate constant (k obs ) was found to be 2.91×10 -2 min -1 and 2.36×10 -2 min -1 , for these Nd 3+ and Er 3+ doped NCs, respectively. The other NCs with x=0.1, also showed significant degradation of CR, but the samples prepared through SSR performed worse. The excellent degradation obtained with the NCs may be attributed to their small particle size. Moreover, the doping of Nd 3+ and Er 3+ ions further supported the photocatalysis through formation of intermediate energy levels within the band gap of TiO 2 . These new levels not only acted as electron traps for efficient suppression of the undesired e -/h + recombination, but also facilitated to a certain extent the absorption of visible irradiation.

show abstract

Indigo dye waste recovery from blue denim textile effluent: a by-product synergy approach

Cited by 40 publications

References 19 publications

Production, Characterization and Treatment of Textile Effluents: A Critical Review

Production, Characterization and Treatment of Textile Effluents: A Critical Review

Dye Removal From Textile Waste Water Through The Adsorption By Pumice Used In Stone Washing

Fast and complete degradation of Congo red under visible light with Er3+ and Nd3+ ions doped TiO2 nanocomposites

Contact Info

Product

Resources

About