Microbial diversity in a continuous system based on rice husks for biodegradation of the azo dyes Reactive Red 2 and Reactive Black 5

Forss, Jörgen; Pinhassi, Jarone; Lindh, Markus V.; Welander, Ulrika

doi:10.1016/j.biortech.2012.12.097

Cited by 43 publications

(19 citation statements)

References 31 publications

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“…Therefore, the results showed that shock loading of ARB could shift the bacterial community structure and bioaugmentation with the yeast TL-F1 might accelerate this shift. Additionally, phyla Proteobacteria, Firmicutes and Bacteroidetes were expected because of their common occurrence in azo dyes treatment systems (Tan et al, 2013b;Forss et al, 2013). Further analysis was conducted to identify bacteria present in the wastewater from four microbial samples at genus level (Fig.…”

Section: Taxonomic Complexity Of Bacterial and Fungal Communitiesmentioning

confidence: 99%

Reactor performance and microbial community dynamics during aerobic degradation and detoxification of Acid Red B with activated sludge bioaugmented by a yeast Candida tropicalis TL-F1 in MBR

Tan

Ning

et al. 2015

International Biodeterioration & Biodegradation

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Section: Taxonomic Complexity Of Bacterial and Fungal Communitiesmentioning

confidence: 99%

Reactor performance and microbial community dynamics during aerobic degradation and detoxification of Acid Red B with activated sludge bioaugmented by a yeast Candida tropicalis TL-F1 in MBR

Tan

Ning

et al. 2015

International Biodeterioration & Biodegradation

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“…column: Zorbax C18, 5 μm, 2.1 x 150 mm, and a Agilent UV detector Jasco UV-975 at 256 nm. The buffers used were: A = 50 mM formic acid with 3.03 mM Ammonium formate, B = Methanol, for programmed flow see [2]. To further examine if the treated water contained any aromatic amines, an acetylation with trifluoroacetic anhydride (TFAA) was performed: 10 μL samples were dissolved in 500 μl deionized water and 2 mL of solution chloroform/methanol (2:1, v/v) were added.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore it is necessary to integrate cost-efficient and simple treatment systems into textile production. Efforts to develop such novel, affordable and applicable degradation systems have been aided by investigating biodegradation performed by naturally occurring microbial communities in biofilters [2–7]. Color can be removed from the process water by microbial adsorption or degradation [5].…”

Section: Introductionmentioning

confidence: 99%

Microbial Biotreatment of Actual Textile Wastewater in a Continuous Sequential Rice Husk Biofilter and the Microbial Community Involved

et al. 2017

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Textile dying processes often pollute wastewater with recalcitrant azo and anthraquinone dyes. Yet, there is little development of effective and affordable degradation systems for textile wastewater applicable in countries where water technologies remain poor. We determined biodegradation of actual textile wastewater in biofilters containing rice husks by spectrophotometry and liquid chromatography mass spectrometry. The indigenous microflora from the rice husks consistently performed >90% decolorization at a hydraulic retention time of 67 h. Analysis of microbial community composition of bacterial 16S rRNA genes and fungal internal transcribed spacer (ITS) gene fragments in the biofilters revealed a bacterial consortium known to carry azoreductase genes, such as Dysgonomonas, and Pseudomonas and the presence of fungal phylotypes such as Gibberella and Fusarium. Our findings emphasize that rice husk biofilters support a microbial community of both bacteria and fungi with key features for biodegradation of actual textile wastewater. These results suggest that microbial processes can substantially contribute to efficient and reliable degradation of actual textile wastewater. Thus, development of biodegradation systems holds promise for application of affordable wastewater treatment in polluted environments.

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“…S1). Moosvi et al [19] showed 90 % azoreduction in a range of pH between 6.5 and 8.0, but its efficiency decreases at comparatively lower pH (3-6) and higher pH (9)(10)(11).…”

Section: Significance Of Biotic and Abiotic Traits On Azoreductionmentioning

confidence: 97%

“…Under oxygendeficient conditions, redox mediators of abiotic or biotic origin catalyze the transfer of redox equivalent from donor to azo bond and dyes are reduced [9]. This reduction causes generation of constituent aromatic moieties, which has been recognized as more carcinogenic than their parent compound [10]. Therefore, a major study has been directed toward the ecological hazards arising due to these breakdown products.…”

Section: Introductionmentioning

confidence: 99%

Microaerophilic Symmetric Reductive Cleavage of Reactive Azo Dye—Remazole Brilliant Violet 5R by Consortium VIE6: Community Synergism

Shah

Jain

Jiyani

et al. 2016

Appl Biochem Biotechnol

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The textile-dyeing industry is rated as one of the foremost industrial sectors that explodes large amount of pollutants to the environment. Reactive azo dye degradation, being a major constituent of these pollutants and perilous material, has been constantly receiving scientific attention. In textile industry, use of Remazole Brilliant Violet 5R (RBV5R) as reactive azo dyes is more frequent. Highly competent, RBV5R-degrading bacterial consortium VIE6 was developed from the soil of the Vatva Industrial Estate, Gujarat, India. Consortium VIE6 comprised of five bacterial strains Bacillus sp. DMB1, Staphylococcus sp. DMB2, Escherichia sp. DMB3, Enterococcus sp. DMB4, and Pseudomonas sp. DMB5. These strains convened a better decolorization efficiency between 200 and 1000 mg/L of dye concentration and were much stable at pH 6.5, 37 °C. Azoreductase, laccase, and lignin peroxidase activities of consortium showed significant variation throughout the degradation process indicating the different metabolic capabilities of the existing microflora. The community interactions and synergism were shown to facilitate the biotransformation of RBV5R by combination of various electron donors. Voltammograms revealed the variations in electron discharge properties which coincide with the dynamics of community derived using qPCR assays. The variation in catabolic capabilities of the individual strains was observed during active metabolism of RBV5R degradation pertaining to the aerobic and facultative functions.

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Microbial diversity in a continuous system based on rice husks for biodegradation of the azo dyes Reactive Red 2 and Reactive Black 5

Cited by 43 publications

References 31 publications

Reactor performance and microbial community dynamics during aerobic degradation and detoxification of Acid Red B with activated sludge bioaugmented by a yeast Candida tropicalis TL-F1 in MBR

Reactor performance and microbial community dynamics during aerobic degradation and detoxification of Acid Red B with activated sludge bioaugmented by a yeast Candida tropicalis TL-F1 in MBR

Microbial Biotreatment of Actual Textile Wastewater in a Continuous Sequential Rice Husk Biofilter and the Microbial Community Involved

Microaerophilic Symmetric Reductive Cleavage of Reactive Azo Dye—Remazole Brilliant Violet 5R by Consortium VIE6: Community Synergism

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