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Article
Enhanced reduction of Fe(III) oxides and methyl orange by Klebsiella oxytoca in presence of anthraquinone-2-disulfonate
Klebsiella oxytoca GS-4-08 is capable of azo dye reduction, but its quinone respiration and Fe(III) reduction abilities have not been reported so far. In this study, the abilities of this...
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Article
Decolorization characteristics of a newly isolated salt-tolerant Bacillus sp. strain and its application for azo dye-containing wastewater in immobilized form
Strain CICC 23870 capable of decolorization of various azo dyes under high saline conditions was isolated from saline-alkali soil. The oxygen-insensitive azoreductase in crude extracts exhibited a wide substra...
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Article
Intracellular azo decolorization is coupled with aerobic respiration by a Klebsiella oxytoca strain
Reduction of azo dye methyl red coupled with aerobic respiration by growing cultures of Klebsiella oxytoca GS-4-08 was investigated. In liquid media containing dye and 0.6 % glucose in a mineral salts base, 100 m...
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Article
A novel integrated approach to quantitatively evaluate the efficiency of extracellular polymeric substances (EPS) extraction process
A novel integrated approach is developed to quantitatively evaluate the extracellular polymeric substances (EPS) extraction efficiency after taking into account EPS yield, EPS damage, and cell lysis. This appr...
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Article
SMP production by activated sludge in the presence of a metabolic uncoupler, 3,3′,4′,5-tetrachlorosalicylanilide (TCS)
3,3′,4′,5-Tetrachlorosalicylanilide (TCS) is an effective metabolic uncoupler utilized for microbial yield reduction. However, its potential impact, in particular on the soluble microbial products (SMP) format...
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Article
Isolation and characterization of a Klebsiella oxytoca strain for simultaneous azo-dye anaerobic reduction and bio-hydrogen production
A facultative anaerobic bacteria strain GS-4-08, isolated from an anaerobic sequence batch reactor for synthetic dye wastewater treatment, was investigated for azo-dye decolorization. This bacterium was identi...
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Article
Anaerobic biodecolorization mechanism of methyl orange by Shewanella oneidensis MR-1
In this work, we investigated the anaerobic decolorization of methyl orange (MO), a typical azo dye, by Shewanella oneidensis MR-1, which can use various organic and inorganic substances as its electron acceptor ...
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Article
Adsorption and decolorization kinetics of methyl orange by anaerobic sludge
Adsorption and decolorization kinetics of methyl orange (MO) by anaerobic sludge in anaerobic sequencing batch reactors were investigated. The anaerobic sludge was found to have a saturated adsorption capacity...
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Article
Enhanced reductive degradation of methyl orange in a microbial fuel cell through cathode modification with redox mediators
A model azo dye, methyl orange (MO), was reduced through in situ utilization of the electrons derived from the anaerobic conversion of organics in a microbial fuel cell (MFC). The MO reduction process could be...
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Article
Electricity generation from mixed volatile fatty acids using microbial fuel cells
Fermentative hydrogen production, as a process for clean energy recovery from organic wastewater, is limited by its low hydrogen yield due to incomplete conversion of substrates, with most of the fermentation ...