Biological treatment of effluent containing textile dyes

Gonçalves, Isabel; Gomes, Abel J. P.; Brás, Rui; Ferra, M. I. A.; Amorim, M. T. Pessoa de; Porter, Regina S.

doi:10.1111/j.1478-4408.2000.tb00016.x

Cited by 59 publications

(33 citation statements)

References 6 publications

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“…Improper disposal of dye-containing wastewaters that cause aesthetic problems concerns not only the scientists, but is now beginning also to draw the public authority's attention and can generate toxic effects to aquatic life. Effluents from textile dyeing are constituted by complex mixtures of dyes, auxiliary chemicals, salts, acids, bases, organochlorines and sometimes heavy metals (Goncalves et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Removal of Remazol Blue 19 from wastewater by zinc–aluminium–chloride-layered double hydroxides

et al. 2013

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Layered double hydroxides (LDHs), also called anionic clays, consist of cationic brucite-like layers and exchangeable interlayer anions. These hydrotalcite-like compounds, with Zn and Al in the layers and chloride in the interlayer space, were prepared following the coprecipitation method at constant pH. The affinity of this material for Remazol Blue 19, RB19 [2-(3-(4-Amino-9,10-dihydro-3-sulpho-9,10-dioxoanthracen-4-yl) aminobenzenesulphonyl) vinyl) disodiumsulphate], was studied as a function of contact time, pH of the solutions LDH dose and the RB19/[Zn-Al-Cl] mass ratio. It was found that 48 h is enough time for the equilibrium state to be reached with maximum RB19 retention at pH of 9 for an LDH dose equal to 100 mg and with an RB19/[Zn-Al-Cl] mass ratio higher than 3. The adsorption isotherm, described by the Langmuir model, is of L-type. The results demonstrate that RB19 retention on LDHs occurs by adsorption on external surface when RB19/[Zn-Al-Cl] mass ratio is equal or \3 and by both adsorption and interlayer ion exchange for ratios higher than 3. A mechanism for removal of RB19 anion has been confirmed by X-ray diffraction, IR spectroscopy and TG analysis (TG and DTG curves).

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Section: Introductionmentioning

confidence: 99%

Removal of Remazol Blue 19 from wastewater by zinc–aluminium–chloride-layered double hydroxides

et al. 2013

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“…Estimates put the dye losses at between 10-15% (Vaidya and Datye, 1982). Though not generally toxic to the environment, dyes colour water bodies and may hinder light penetration thereby affecting aquatic life and limiting the utilization (Ajayi and Osibanjo, 1980;Goncalves et al, 2000). It has been reported that a typical textile effluent contains a dye mass concentration of 10-50 mg/L (Clarke and Anliker, 1980).…”

Section: Discussionmentioning

confidence: 99%

Decolorization And Physico Chemical Analysis Of Textile AZO DYE By Bacillus

Jayan¹,

Maragatham²,

Saravanan³

2011

Int. Jour. Appl. Bio-Eng.

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Water pollution control is at present one of the major areas of scientific activity. The textile wastewaters are characterized by extreme fluctuations in many parameters such as chemical oxygen demand (COD), biochemical oxygen demand (BOD), pH, colour and salinity. Biotreatment offers a cheaper and environmentally friendlier alternative for colour removal in textile effluents. The ubiquitous nature of bacteria makes them invaluable tools in effluent biotreatment. Potential decolourization and COD removal of the simulated effluent by each isolate were investigated. The gram staining test showed the isolate to be non-motile, gram positive, spore forming, rod-shaped bacteria. Biochemical characterization of the isolate revealed it to be negative for Indole, Methyl Red test. The potential strain was phylogenetically identified as Bacillus. Only effluent-adapted isolates of Bacillus species have relatively high COD removal activities while all the non-adapted isolates have high COD removal capabilities. This study discovered effluent adapted strains of Bacillus with potentials for colour removal and strains of Bacillus with potential use for COD removal. The results suggest that the non-adapted adapted isolates. Reports however indicate that though several microorganisms may seem to have a potential for dye degradation, very few strains can withstand the conditions of dyeing effluents thus the effluent-adapted strains may be better candidates for potential bioremediative uses.

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“…[9,10] Several researchers attempted treatment of textile effluent using membrane separation processes, [11,12] electro-coagulation techniques, [13,14] and biological treatment. [15,16] However, each technique has its drawbacks. For example, removal of dyes using nanofiltration (NF) requires high operating pressure and releases concentrated sludge into the environment.…”

Section: Introductionmentioning

confidence: 99%

Modelling of cross‐flow microfiltration of dye‐loaded activated carbon in a ceramic tubular membrane module

Mondal

Karmakar

2015

Can J Chem Eng

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A hybrid process involving adsorption followed by microfiltration is a less energy-intensive alternative for treatment of textile effluent. Modelling of microfiltration of dye-loaded activated carbon in a tubular module is important for design and scale-up. In this work, a simple kinetic model for cake removal during microfiltration in a tubular module is derived from first principles.. Reactive black dye exhibits the highest flux decline rate among the four different dyes. Cake layer thickness is less than 1 % of the channel diameter for different operating conditions. The mathematical analysis is extended to predict the limiting pressure. Cake removal rate is in the range of 0.01-0.05 Pa À1 Á s À1 for different dyes, lowest for reactive black and highest for reactive brown. The cake is thickest (14 mm) for reactive black, compared to other dyes at 104 kPa and 100 L/h cross-flow rate. Cake resistance of black dye is 1.5 times the membrane hydraulic resistance at a 50 L/h crossflow rate and 104 kPa, and it is the highest among all the dyes analyzed. Simulation shows that steady state permeate flux increases with Reynolds number at higher transmembrane pressure whereas it varies insignificantly at lower pressure. Attainment of steady state is delayed for a lower cake removal constant. For yellow dye, steady state is achieved at 15 min for k r ¼ 0.1 Pa À1 Á s À1 and beyond 1 h for k r ¼ 0.1 Pa À1 Á s À1. Cake compressibility has a stronger influence on limiting transmembrane pressure compared to cake removal rate at higher Reynolds numbers.

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Biological treatment of effluent containing textile dyes

Cited by 59 publications

References 6 publications

Removal of Remazol Blue 19 from wastewater by zinc–aluminium–chloride-layered double hydroxides

Removal of Remazol Blue 19 from wastewater by zinc–aluminium–chloride-layered double hydroxides

Decolorization And Physico Chemical Analysis Of Textile AZO DYE By Bacillus

Modelling of cross‐flow microfiltration of dye‐loaded activated carbon in a ceramic tubular membrane module

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