Combined Anaerobic‐Aerobic Bacterial Degradation of Dyes

Sugumar, Ramya; Sadanandan, Sandhya

doi:10.1155/2010/987362

Cited by 9 publications

(6 citation statements)

References 5 publications

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“…1) by sewage effluent under anaerobic conditions has been reported in the literature but no a subsequent finishing biological treatment using an aerobic MBR process [9][10][11]. Based on this observation the present research describes a sequential anaerobic-aerobic process for complete mineralization of AO7.…”

Section: Introductionmentioning

confidence: 73%

Biodegradation of acid orange 7 in an anaerobic–aerobic sequential treatment system

García-Martínez

Bengoa

Fortuny

et al. 2015

Chemical Engineering and Processing - Process Intensification

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Section: Introductionmentioning

confidence: 73%

Biodegradation of acid orange 7 in an anaerobic–aerobic sequential treatment system

García-Martínez

Bengoa

Fortuny

et al. 2015

Chemical Engineering and Processing - Process Intensification

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“…This indicates that in this model of binary biosystem the presence of P. luteola significantly enhanced decolorization performance of E. coli. The importance and the efficiency of bacterial consortium to decolorize azo dyes than monoculture technique was reported (Isik and Sponza, 2003;Khehra et al, 2005;Chen et al, 2006;Moosvi et al, 2007;Dafale et al, 2008;Sharma et al, 2009;Tony et al, 2009;Chaube et al, 2010;Sugumar and Sadanandan, 2010).…”

Section: Decolorization Of Mb By Bacterial Consortium Of E Coli and mentioning

confidence: 99%

“…It is known that anaerobic fermentation is more suitable for Azo dye decolorization and aerobic fermentation is required to the hydrolysis of the substituted amines, that is, the experimental facultative bacterial consortium completely decolorize and hydrolyze MB. Some workers used combined anaerobic-aerobic bacterial degradation of dyes (Karatas et al, 2010;Sugumar and Sadanandan, 2010).…”

Section: Optimization Of Culture Conditions Affecting Mb Decolorizatimentioning

confidence: 99%

Statistical optimization of cultural conditions for decolorization of methylene blue by mono and mixed bacterial culture techniques

Ghanem¹

2011

Afr. J. Microbiol. Res.

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Acinetobacter baumannii, Corynebacterium sp., Cytophaga columnaris, Escherichia coli, Pseudomonas fluorescence and Pseudomonas luteola were locally isolated bacteria from sewage Disposal Lake at Jeddah, Saudi Arabia and they can decolorize methylene blue. E. coli was the most potent MB decolorizing and to a lesser extend P. luteola. Five different media were tested to elucidate medium formulation in favor of MB decolorization by E. coli and P. luteola. Ingredients of the basal medium favored the complete decolorization of 50 µg MB/ml after 84 h of fermentation. Time course decolorization of MB by E. coli indicated that 75 h of fermentation was satisfactory to decolorize 50 µg MB/ml. It was also able to decolorize different levels of MB up to 150 µg MB/ml after 95 h of fermentation. Bacterial consortium of E. coli and P. luteola was highly efficient to decolorize MB than monoculture, where the decolorization period reduced by more than 37% and increased decolorization rate (µgMB/h) up to 58%. Statistical designs of two phase multifactorial optimization (Plackett-Burman and Box-Behnken) were carried out to optimize cultural conditions to increase the efficiency of mixed culture to decolorize 150 µg MB/ml. Under the optimized conditions the decolorization period was reduced by about 31.7% and with increased decolorization rate by 46.4%. Methylene blue can be efficiently decolorized by facultative aerobic bacteria (E. coli and P. luteola). The decolorization process was markedly influenced by the composition of the fermentation medium and concentration of MB. Mixed culture of E. coli and P. luteola was highly efficient to decolorize MB than monoculture technique. The cultural conditions were considerably optimized using statistical experimental designs of Plackett-Burman and Box-Behnken.

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“…The concentration range was chosen in the present study based on the discharge concentration of a dye plant in Malaysia. In fact, the presence of a very small amount of dye in water (<1 mg ⁄ l for some dyes) is highly visible [37] and enough to present an aesthetic problem [38].…”

Section: Procedures and Analysismentioning

confidence: 99%

Investigation into photocatalytic decolorisation of CI Reactive Black 5 using titanium dioxide nanopowder

Low

Teh

et al. 2011

Coloration Technology

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The photocatalytic decolorisation of CI Reactive Black 5 using titanium dioxide nanopowder as a catalyst was studied and the results obtained are discussed in terms of its decolorisation efficiency. All experiments were performed using a double‐walled quartz immersion well batch reactor in which the slurry form of the reactants was at its natural pH of 5.1. The performance of titanium dioxide nanopowder (size <25 nm; surface area 200–220 m2/g) was compared with that of reference titanium dioxide powder (size ca. 230 nm; surface area 11 m2/g); in both cases, the titanium dioxide samples were anatase. It was found that the photocatalytic decolorisation efficiencies obtained using titanium dioxide nanopowder were higher than those of the reference titanium dioxide powder, with the latter taking approximately 8 min longer to achieve almost complete decolorisation of 10 mg/l CI Reactive Black 5. The photocatalytic decolorisation rate of CI Reactive Black 5 using both titanium dioxide photocatalysts typically followed a first‐order reaction and the decolorisation kinetics were successfully fitted to a simplified Langmuir–Hinshelwood kinetic model. In addition, the effects of light type and intensity, catalyst loading and initial CI Reactive Black 5 concentration were investigated using titanium dioxide nanopowder as the photocatalyst in the decolorisation of the dye. This study shows that the recommended parameters for treating 10 mg/l CI Reactive Black 5 based on the experimental set‐up and operating conditions are an ultraviolet light power of 125 W (39.3 mW/cm2) and a 0.3‐g/l catalyst loading.

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Combined Anaerobic‐Aerobic Bacterial Degradation of Dyes

Cited by 9 publications

References 5 publications

Biodegradation of acid orange 7 in an anaerobic–aerobic sequential treatment system

Biodegradation of acid orange 7 in an anaerobic–aerobic sequential treatment system

Statistical optimization of cultural conditions for decolorization of methylene blue by mono and mixed bacterial culture techniques

Investigation into photocatalytic decolorisation of CI Reactive Black 5 using titanium dioxide nanopowder

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