Mutual effect between electrochemically active bacteria (EAB) and azo dye in bio-electrochemical system (BES)

Cui, Dan; Cui, Min-Hua; Liang, Bin; Liu, Wenzong; Tang, Zi-En; Wang, Aijie

doi:10.1016/j.chemosphere.2019.124787

Cited by 32 publications

(2 citation statements)

References 47 publications

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“…Recent studies have demonstrated that electrochemical methods have been widely employed in the degradation of organic pollutants in various wastewaters, because of high removal efficiency and low energy consumption [17]. Electrochemical methods comprise electrocoagulation (EC), electrocatalytic oxidation [18], bioelectrochemistry [19], and electroreduction [20]. Among them, the EC method has the advantage of strong applicability, a high degree of automation, high efficiency, and low cost, and thus could be an attractive treatment technique for dye wastewaters.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Azo Dyes with Different Functional Groups in Simulated Wastewater by Electrocoagulation

Liu

Bao

et al. 2022

Water

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Increasing attention has been paid to the widespread contamination of azo dyes in water bodies globally. These chemicals can present high toxicity, possibly causing severe irritation of the respiratory tract and even carcinogenic effects. The present study focuses on the periodically reverse electrocoagulation (PREC) treatment of two typical azo dyes with different functional groups, involving methyl orange (MO) and alizarin yellow (AY), using Fe-Fe electrodes. Based upon the comparative analysis of three main parameters, including current intensity, pH, and electrolyte, the optimal color removal rates for MO and AY could be achieved at a rate of up to 98.7% and 98.6%, respectively, when the current intensity is set to 0.6 A, the pH is set at 6.0, and the electrolyte is selected as NaCl. An accurate predicted method of response surface methodology (RSM) was established to optimize the PREC process involving the three parameters above. The reaction time was the main influence for both azo dyes, while the condition of PREC treatment for AY simulated wastewater was time-saving and energy conserving. According to the further UV–Vis spectrophotometry analysis throughout the procedure of the PREC process, the removal efficiency for AY was better than that of MO, potentially because hydroxyl groups might donate electrons to iron flocs or electrolyze out hydroxyl free radicals. The present study revealed that the functional groups might pose a vital influence on the removal efficiencies of the PREC treatment for those two azo dyes.

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Section: Introductionmentioning

confidence: 99%

Degradation of Azo Dyes with Different Functional Groups in Simulated Wastewater by Electrocoagulation

Liu

Bao

et al. 2022

Water

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“…Facile route for the synthesis and characterization of new naphtho[2,3f]quinoxaline-dione, trione and anthra-dione derivatives they represent the second largest class of textile pigments (Aspland et al, 1997) and unlike these dyes, anthraquinone derivatives are resistant against degradation due to their aromatic structure (Banat et al, 1996). As the synthesis of these dyes is more complicated, their production costs are higher in comparison to azo dyes (Cui et al, 2020;Maliyappa et al, 2020;Putro et al, 2019;Tasli et al, 2020). Therefore, anthraquinone dyes are only used if the required properties and colors are remarkable or when the desired colors cannot be obtained easily by the use of azo dyes.…”

Section: Introductionmentioning

confidence: 99%

Facile route for the synthesis and characterization of new naphtho[2,3-f]quinoxaline-dione, trione and anthra-dione derivatives

Int¹

2019

Preprint

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In the present study, addition of nitroso group at position 1 of 2-aminoanthraquinone (1) to yield 2-amino-1-nitroanthraquinone (2) was carried out by the reaction of compound (1) with sodium nitrite in water. Compound (2) was used as starting material to produce many new naphtho[2,3-f] quinoxaline-dione, trione, naphtho-pyrazole quinoxaline-dione, anthra-triazine-dione, naphtho-thiazole quinoxaline-dione and anthrabenzo-triazepine-dione derivatives by elimination of one molecule of water as an initial reaction step. The reacting moieties were nitroso and amino function groups to yield a series of compounds. The structures of the products were determined by elemental mass, IR and 1H NMR analysis and the adopted method is efficient to prepare a series of compounds and could possibly be used for the synthesis of new compounds.

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Application of Microbes in Dye Decolorization

Gouthami

Lakshminarayana

Veeraraghavan

et al. 2022

Microbial Biotechnology

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Mutual effect between electrochemically active bacteria (EAB) and azo dye in bio-electrochemical system (BES)

Cited by 32 publications

References 47 publications

Degradation of Azo Dyes with Different Functional Groups in Simulated Wastewater by Electrocoagulation

Degradation of Azo Dyes with Different Functional Groups in Simulated Wastewater by Electrocoagulation

Facile route for the synthesis and characterization of new naphtho[2,3-f]quinoxaline-dione, trione and anthra-dione derivatives

Application of Microbes in Dye Decolorization

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