Textile wastewater treatment by AOPs for brine reuse

Bilińska, Lucyna; Gmurek, Marta; Ledakowicz, S.

doi:10.1016/j.psep.2017.04.019

Cited by 94 publications

(49 citation statements)

References 25 publications

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“…According to many literature reports, like Colindres et al, 2010 [2] and Bamperng et al 2010 [3], the decolourisation of dyes is supposed to be the the dominant phenomenon in the initial phase of the ozonation process. This observation was reported in the authors' previous work as well [38]. The easiest explanation for decolourisation could be the direct attack of ozone on the chromophore of the dye.…”

Section: Stoichiometry Of Br5 Reaction With Ozonesupporting

confidence: 79%

Modeling of Ozonation of Reactive Black 5 Through a Kinetic Approach

Bilińska

Żyłła

Smółka

et al. 2017

Fibres and Textiles in Eastern Europe

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C.I. Reactive Black 5 (RB5) is the most commonly used dye in the textile industry. Ozone is a strong oxidan that can decompose many barely degradable pollutants, including dyes. Although there are many literature reports devoted to the treatment of textile wastewater and dye solutions by ozone, the ozonation mechanism and modeling of the kinetics is still not well covered. In this work a kinetic model of the process of RB5 decolourisation by ozone has been proposed and validated on the basis of experimental data. The experiments were carried out in a liquid-liquid system to avoid mass transfer limitation. A model was established for acid reaction medium. The main RB5 reaction was direct oxidation of the dye with molecular ozone. The self-decomposition of ozone in liquid phase was taken into account and described by an empirical equation. The reaction rate constants of RB5 with ozone were estimated from the experimental data in the range of (1.88 ± 0.08) × 104 – (2.53 ± 0.10) × 105 M-1s-1 (invariant with initial dye concentration). An empirical equation k2′ = 1.06 × 108(COH−)0.31 was built for the constant to make it dependent on the pH value. A solution of the non-linear inverse problem allowed for identification of the kinetic constants on the basis of the experimental data obtained. The model gave a good match between the prediction and experimental data for pH between 1.88 and 4.0.

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Section: Stoichiometry Of Br5 Reaction With Ozonesupporting

confidence: 79%

Modeling of Ozonation of Reactive Black 5 Through a Kinetic Approach

Bilińska

Żyłła

Smółka

et al. 2017

Fibres and Textiles in Eastern Europe

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“…2 The amount of generated textile wastewater can reach more than 300 L per kg of product. 3 The main adverse effect of 1042 MITROVIĆ et al dyes in the environment are their inhibitory effect on aquatic photosynthesis. Moreover, degradation by-products of dyes, which can include aromatic structures with a large variety of substituents (e.g., amines) that could be cancerogenic.…”

Section: Introductionmentioning

confidence: 99%

Sulfate radicals-based degradation of antraquinone textile dye in a plug flow photoreactor

et al. 2019

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The study evaluated the degradation of the antraquinone textile dye reactive blue 19, a frequently used dye in the textile industry, by means of sulfate radicals. Sulfate radicals were generated by activation of peroxydisulfate with UV-C (254 nm) irradiation. UV irradiation alone did not affect the removal efficiency, while with the addition of an oxidant, the removal efficiency was significantly improved. The degradation rates of the textile dye increased at higher initial dosages of oxidant, while the opposite trend was observed in the case of increasing initial dye concentration. Acidic conditions were more convenient for degradation of the dye then neutral or basic. Degradation of the textile dye was not affected by the presence of bicarbonate and chloride anions within the concentrations range from 1 to 200 mmol•L-1. The presence of carbonate showed a suppressing effect on the removal efficiency, especially at carbonate levels below 20 mmol•L-1. However, at carbonate levels greater than 20 mmol•L-1 , the dye removal efficiency increased. The use of methanol and tert-butanol as scavengers revealed that both radicals, HO • and SO 4 •-, would be generated depending on initial pH value of the dye solution.

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“…The number of researches and publications on the environmental issue is increasing. Several groups of contaminants at different levels of concentrations have been studied by researches from all over the world, among them, the most cited environmental pollutants in the academic world are: pharmaceuticals (NAPOLEÃO et al, 2018;BANASCHIK et al, 2018), hormones (YONGZE et al, 2017), polycyclic aromatic hydrocarbons (HAPs) (LABIADH et al, 2015) and dyes (BILINSKA;GMUREK;LEDAKOWICZ, 2017;SANTANA et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Kinetic and ecotoxicological evaluation of the direct orange 26 dye degradation by Fenton and solar photo-Fenton processes

Santana

Nascimento

Silva

et al. 2018

REGET

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The presence of color in textile effluents has been studied because of the need for more effective treatments. Therefore, advanced oxidative processes (AOP) have been used in the degradation of dyes, as well as in the conversion of organic matter. This study evaluated the degradation of the direct orange 26 textile dye by Fenton and photo-Fenton processes (with natural solar radiation). A statistical analysis, based on factorial 23 indicated the best working conditions, being: [H2O2] = 100 mg·L-1 and pH 3-4, for both AOP in that the [Fe] = 1 e 5 mg·L-1, for photo-Fenton and Fenton, respectively. The results of the kinetic studies demonstrated a good fit to the nonlinear kinetic model proposed by Chan and Chu, with values of R2 > 0,996 (photo-fenton) and R2 > 0,939 (Fenton). The tests performed to evaluate the chemical oxygen demand indicated conversions of 62.05% (Fenton) and 66.41% (photo-Fenton). Finally, the ecotoxicity study indicated that the post-treatment samples were non-toxic to the bacteria Escherichia coli and Proteus mirabilis but showed growth inhibition for Lactuca sativa (Fenton and photo-Fenton) seeds and for Brassica juncea and Portulaca grandiflora (Fenton).

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Textile wastewater treatment by AOPs for brine reuse

Cited by 94 publications

References 25 publications

Modeling of Ozonation of Reactive Black 5 Through a Kinetic Approach

Modeling of Ozonation of Reactive Black 5 Through a Kinetic Approach

Sulfate radicals-based degradation of antraquinone textile dye in a plug flow photoreactor

Kinetic and ecotoxicological evaluation of the direct orange 26 dye degradation by Fenton and solar photo-Fenton processes

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