Decolourisation and detoxifying of Remazol Red dye and its mixture using Fenton's reagent

Meriç, Süreyya; Selçuk, Hüseyin; Gallo, M.; Belgıorno, Vincenzo

doi:10.1016/j.desal.2004.09.002

Cited by 57 publications

(42 citation statements)

References 40 publications

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“…Chemical processes include coagulation-flocculation (Wong et al 2007;Golob et al 2005) and ozonation (Taplad et al 2008;Inaloo et al 2011). Advanced oxidation processes (AOP) include Fenton's reagent (Meric et al 2005;Gutowska et al 2007;Koprivanac andKusic 2009), photo-Fenton (Khan et al 2010), and photocatalysis (Daneshwar et al 2003;Mashkour et al 2011). Electrochemical processes include electrocoagulation (Phalakornkule et al 2010;Daneshvar et al 2007;Patel et al 2011), electrooxidation (Chou et al 2011;Costa et al 2009), and electrochemical reduction (Uliana et al 2012).…”

Section: Decolourization and Degradation Of Dyes By Various Methodsmentioning

confidence: 99%

Destruction of azo dyes by anaerobic–aerobic sequential biological treatment: a review

Popli

Patel

2014

Int. J. Environ. Sci. Technol.

270

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Dyes are synthetic organic compounds widely used in various industries such as, textile, leather, plastic, food, pharmaceutical, and paints manufacturing industries. Coloured effluents are highly toxic to the aquatic life and mutagenic to humans. Wastewater containing dyes has become an important issue demanding serious attention. Among the synthetic dyes, azo dyes are the largest and most widely used dyes and account for more than half of the annually produced dyes. The biodegradation of azo dyes is difficult due to their complex structure and synthetic nature. Several treatments have been proposed for efficient azo dye removal, most of them presenting some limitations such as generation of waste sludge, high operational costs, poor efficiency, and incomplete mineralization. Biological treatment is a cost-effective and eco-friendly process for dye degradation. Sequential anaerobic-aerobic biological treatment is considered as one of the most cost-effective methods for the complete mineralization of azo dyes. The anaerobic stage yields decolourization through reductive cleavage of the dye's azo linkages, resulting in the formation of generally colourless but potentially hazardous aromatic amines. The aerobic stage involves degradation of the aromatic amines. It is the most logical step for removing the azo dyes from the wastewater. Several factors can influence the microbial activity and consequently the efficacy and effectiveness of the complete biodegradation processes. This paper summarizes the results of biological decolourization of azo dyes using various types of reactors, elaborates biochemical mechanisms involved, and discusses influence of various operational parameters on decolourization based on reports published in the last decade.

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Section: Decolourization and Degradation Of Dyes By Various Methodsmentioning

confidence: 99%

Destruction of azo dyes by anaerobic–aerobic sequential biological treatment: a review

Popli

Patel

2014

Int. J. Environ. Sci. Technol.

270

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“…Besides, the applied O 3 dose as well as the oxidation time should be optimized to evaluate its contribution to toxicity removal, instead causing any toxicity increase in the effluent [5,12]. 10 min ozonation at 5, 9 and 11.0 pH values did not improve the toxicity removal (0% at all pH values) as shown in Figure 5.…”

Section: Generalmentioning

confidence: 99%

“…However, the raw water displayed 100% toxicity even at 50% dilution when the conductivity [6] and ammonia parameters were below the toxic limits. Therefore, the preozone oxidation was considered to remove the toxic component such as dyes, were toxic on D. magna [4,5] or auxilaries, found toxic on Vibrio fisheri [7]. (Figure 1b).…”

Section: Generalmentioning

confidence: 99%

“…Raw and ozone pre-treated samples were tested within 2 h to avoid any effect of residual O 3 [23]. Daphnids were grown in the laboratory at 16 h day light and 8 h dark periods supplying a 3000 lux illumination [4,5,8]. They were fed with Selenastrum capricornutum (300.000 cell ml C and a minimum 6 mg l -1 of dissolved oxygen was supplied by air filtered through activated carbon.…”

Section: Daphnia Magnamentioning

confidence: 99%

“…Many azo dyes which cause intensive colour in the wastewater [1][2][3][4][5] and textile industry effluent [6][7][8] have been found to mutagen/carcinogen/toxic to aquatic organisms. Many advanced oxidation processes (AOPs) such as photocatalytic oxidation [9], Fenton [8] and Photo-fenton oxidation [10] have been applied individually or combined with UV, H 2 O 2 oxidants to decolourize, detoxicify and degradate textile wastewater and dyes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ozone pre-oxidation of a textile industry wastewater for acute toxicity removal

2013

Global NEST Journal

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In this work, pre-ozonation for degradation, decolourization and detoxicifying of a raw textile wastewater collected in a textile fininshing industry, Istanbul (Turkey) is investigated. Differing from the previous studies, a low ozone (O 3 ) flow rate (9.6 mg min -1 ) was applied at original pH of the wastewater. The effect of pH varying from 5 to 11 and the H 2 O 2 dose of 600 mg l -1 on ozone oxidation were also investigated. The acute toxicity of raw and treated wastewater samples were measured using 24 h newborn Daphnia magna. COD, colour in APHA Pt-Co (platin-cobalt) unit and absorbance at 450, 500 and 550 nm wave lengths which were coinciding the peak absorbance band of the raw wastewater were analyzed in treated samples.A 60% of acute toxicity, 92% of and 50% of total COD removal were obtained at original pH of wastewater by applying ozone for 30 min. Absorbed ozone dose was 105 mg l -1 with a ozone transfer rate of 3.5 mg l -1 . Varying pH did not improve toxicity removal, however, soluble COD removal increased at 3 and 6% respectively for 9.0 and 11.0 values while colour removal increased (7%) only at 11.0 pH. Adding 600 mg l -1 of H 2 O 2 increased COD removal at 10% after 20 min oxidation. Colour removal increase was more significant in O 3 /H 2 O 2 oxidation in parallel with the increase in absorbance kinetics.All over results obtained this study are expected to contribute to control the textile industry wastewater pollution and to protect aquatic environment.

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Separation of dyes using composite carbon membranes

Sachdeva

Kumar

2009

AIChE Journal

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A composite, clay supported carbon membrane has been synthesized by carbonization of a blend of polyethylene glycol and phenol formaldehyde resin and the membrane thus obtained is characterized by separation of dyes. This membrane is subjected to permeability test using pure water which is found to be considerably higher than that reported in literature. It is subsequently shown to reject Acid Orange 7 dye from water with the rejection dependent on pressure and concentration of the dye which is typical phenomenon observed for a charged membrane. The separation data has been analyzed using the Space charge model and the membrane charge is estimated by minimizing the root mean square error between the experimental results and those calculated from the model.

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Decolourisation and detoxifying of Remazol Red dye and its mixture using Fenton's reagent

Cited by 57 publications

References 40 publications

Destruction of azo dyes by anaerobic–aerobic sequential biological treatment: a review

Destruction of azo dyes by anaerobic–aerobic sequential biological treatment: a review

Ozone pre-oxidation of a textile industry wastewater for acute toxicity removal

Separation of dyes using composite carbon membranes

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