Effect of pH, inoculum dose and initial dye concentration on the removal of azo dye mixture under aerobic conditions

Krishnan, Jagannathan; Kishore, Anthony Arvind; Suresh, A.; Madhumeetha, B.; Prakash, D. Gnana

doi:10.1016/j.ibiod.2016.11.024

Cited by 49 publications

(15 citation statements)

References 25 publications

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“…27,28 This suggested that ora DDMY2 had outstanding potential to decolorize high concentration of RB19 and was relatively better than other bacterial strains under the activation of tea residue. 11,29 The phenomenon was similar to the result founded by Fu et al 30 Moreover, even if the decolorization efficiency decreased with increasing dye concentration, the actual moles of RB19 removed were increased as a function of RB19 concentration. For example, at 48 h, 88.69 AE 1.80% decolorization of 100 mg L À1 RB19 was equivalent to 88.69 AE 1.80 mg L À1 of dye removed; however, 83.73 AE 1.57% decolorization of 300 mg L À1 RB19 was equivalent to 251.19 AE 4.71 mg L À1 of dye removed.…”

Section: Effects Of Physico-chemical Parameters On Decolorization Persupporting

confidence: 83%

Highly efficient biodegradation of reactive blue 19 under the activation of tea residue by a newly screened mixed bacterial flora DDMY2

Xie

Zheng

et al. 2019

RSC Adv.

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Section: Effects Of Physico-chemical Parameters On Decolorization Persupporting

confidence: 83%

Highly efficient biodegradation of reactive blue 19 under the activation of tea residue by a newly screened mixed bacterial flora DDMY2

Xie

Zheng

et al. 2019

RSC Adv.

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“…This figure is modified from Chaudhari et al (2017) temperature, carbon and nitrogen sources, availability of oxygen, dye concentration and structure, metal ions, ventilatory capacity, reducing power, and electron donors (Krishnan et al, 2017). In general, researchers have investigated the impacts of different factors to improve the efficiency of anthraquinone dye degradation.…”

Section: Fig 2 Proposed Pathway For the Biotransformation Of Reactivmentioning

confidence: 99%

Bacterial degradation of anthraquinone dyes

Wang

et al. 2019

J. Zhejiang Univ. Sci. B

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Anthraquinone dyes, which contain anthraquinone chromophore groups, are the second largest class of dyes after azo dyes and are used extensively in textile industries. The majority of these dyes are resistant to degradation because of their complex and stable structures; consequently, a large number of anthraquinone dyes find their way into the environment causing serious pollution. At present, the microbiological approach to treating printing and dyeing wastewater is considered to be an economical and feasible method, and reports regarding the bacterial degradation of anthraquinone dyes are increasing. This paper reviews the classification and structures of anthraquinone dyes, summarizes the types of degradative bacteria, and explores the possible mechanisms and influencing factors of bacterial anthraquinone dye degradation. Present research progress and existing problems are further discussed. Finally, future research directions and key points are presented.

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“…It is known that the removal is faster at low concentrations of the dye [39], in this case MB, thus in this investigation we used the following conditions for the removal of the MB dye: a temperature of 35 • C and a MB concentration of 50 ppm, using a cell concentration of 3.2 × 10 7 cells/mL of the yeast. Reports in the literature suggest that the several biological species that are studied from the physicochemical point of view follow a pseudo-first order model [43]. Therefore, using such a model, the regression analysis was performed (Figure 3) and the process rate constant was obtained.…”

Section: Kinetic Of the Bioremoval Processmentioning

confidence: 99%

Bio-Removal of Methylene Blue from Aqueous Solution by Galactomyces geotrichum KL20A

Contreras

Grande-Tovar

Vallejo

et al. 2019

Water

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The conventional treatments used to remove dyes produced as a result of different industrial activities are not completely effective. At times, some toxic by-products are generated, affecting aquatic ecosystems. In this article, an efficient use of microorganisms is presented as a biodegradation technique that is a safe environmental alternative for the benefit of aquatic life. A strain of the yeast Galactomyces geotrichum KL20A isolated from Kumis (a Colombian natural fermented milk) was used for Methylene Blue (MB) bioremoval. Two parameters of the bioremediation process were studied at three different levels: initial dye concentration and growth temperature. The maximum time of MB exposure to the yeast was 48 h. Finally, a pseudo-first-order model was used to simulate the kinetics of the process. The removal percentages of MB, by action of G. geotrichum KL20A were greater than 70% under the best operating conditions and in addition, the kinetic simulation of the experimental results indicated that the constant rate of the process was 2.2 × 10-2 h−1 with a half time for biotransformation of 31.2 h. The cytotoxicity test based on the hemolytic reaction indicated that by-products obtained after the bioremoval process reached a much lower percentage of hemolysis (22%) compared to the hemolytic activity of the negative control (100%). All of these results suggest that the strain has the capacity to remove significant amounts of MB from wastewater effluents.

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Effect of pH, inoculum dose and initial dye concentration on the removal of azo dye mixture under aerobic conditions

Cited by 49 publications

References 25 publications

Highly efficient biodegradation of reactive blue 19 under the activation of tea residue by a newly screened mixed bacterial flora DDMY2

Highly efficient biodegradation of reactive blue 19 under the activation of tea residue by a newly screened mixed bacterial flora DDMY2

Bacterial degradation of anthraquinone dyes

Bio-Removal of Methylene Blue from Aqueous Solution by Galactomyces geotrichum KL20A

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