Decolorization of Reactive Red 195 by a mixed culture in an alternating anaerobic–aerobic Sequencing Batch Reactor

Farabegoli, G.; Chiavola, Agostina; Rolle, E.; Naso, M.

doi:10.1016/j.bej.2010.08.014

Cited by 40 publications

(13 citation statements)

References 25 publications

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“…The positive trend in COD reduction is in contrast to previous studies in which a decrease in COD reduction with the increase of the initial dye concentration has been reported [25,32]. Several factors may have played a role in determining this unusual trend.…”

Section: Resultscontrasting

confidence: 85%

Combined anaerobic–ozonation process for treatment of textile wastewater: Removal of acute toxicity and mutagenicity

Punzi

Nilsson

Anbalagan

et al. 2015

Journal of Hazardous Materials

207

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Section: Resultscontrasting

confidence: 85%

Combined anaerobic–ozonation process for treatment of textile wastewater: Removal of acute toxicity and mutagenicity

Punzi

Nilsson

Anbalagan

et al. 2015

Journal of Hazardous Materials

207

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“…Biodegradation of azo dyes invariably starts with reductive cleavage of azo bond under anaerobic conditions, generating amine-related structures that are not completely degraded under anaerobic conditions (Farabegoli et al, 2010;Hong et al, 2007b). However, such amines are reported to be readily biotransformed under aerobic conditions (Elbanna et al, 2010;Steffan et al, 2005).…”

Section: Biodegradation Via Sequential Reduction-oxidation Processesmentioning

confidence: 99%

Bacterial diversity and composition in major fresh produce growing soils affected by physiochemical properties and geographic locations

Ibekwe

Yang

et al. 2016

Science of The Total Environment

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Azo dyes and their intermediate degradation products are common contaminants of soil and groundwater in developing countries where textile and leather dye products are produced. The toxicity of azo dyes is primarily associated with their molecular structure, substitution groups and reactivity. To avoid contamination of natural resources and to minimize risk to human health, this wastewater requires treatment in an environmentally safe manner. This manuscript critically reviews biological treatment systems and the role of bacterial reductive and oxidative enzymes/processes in the bioremediation of dye-polluted wastewaters. Many studies have shown that a variety of culturable bacteria have efficient enzymatic systems that can carry out complete mineralization of dye chemicals and their metabolites (aromatic compounds) over a wide range of environmental conditions. Complete mineralization of azo dyes generally involves a two-step process requiring initial anaerobic treatment for decolorization, followed by an oxidative process that results in degradation of the toxic intermediates that are formed during the first step. Molecular studies have revealed that the first reductive process can be carried out by two classes of enzymes involving flavin-dependent and flavin-free azoreductases under anaerobic or low oxygen conditions. The second step that is carried out by oxidative enzymes that primarily involves broad specificity peroxidases, laccases and tyrosinases. This review focuses, in particular, on the characterization of these enzymes with respect to their enzyme kinetics and the environmental conditions that are necessary for bioreactor systems to treat azo dyes contained in wastewater.

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“…Although these amines are generally not further degraded anaerobically, their potential for aerobic biodegradation has been demonstrated for simple molecular structures [7]. Thus, staged anaerobic/aerobic sequencing batch reactor (SBR) systems using floc-forming biomass have been proposed for complete azo dye biodegradation, including decolorization and further aromatic amine mineralization [3,7,8]. However, the optimization of flocculent sludge technology is hampered by intrinsic operational features, such as poor settling characteristics that require a large footprint and compromise the treatment efficiency [9].…”

Section: Introductionmentioning

confidence: 99%

Comparing aerobic granular sludge and flocculent sequencing batch reactor technologies for textile wastewater treatment

Lourenço

Franca

Moreira

et al. 2015

Biochemical Engineering Journal

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Decolorization of Reactive Red 195 by a mixed culture in an alternating anaerobic–aerobic Sequencing Batch Reactor

Cited by 40 publications

References 25 publications

Combined anaerobic–ozonation process for treatment of textile wastewater: Removal of acute toxicity and mutagenicity

Combined anaerobic–ozonation process for treatment of textile wastewater: Removal of acute toxicity and mutagenicity

Bacterial diversity and composition in major fresh produce growing soils affected by physiochemical properties and geographic locations

Comparing aerobic granular sludge and flocculent sequencing batch reactor technologies for textile wastewater treatment

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