Aerobic biodegradation of a mixture of sulfonated azo dyes by a bacterial consortium immobilized in a two-stage sparged packed-bed biofilm reactor

2011 ◽  
Vol 12 (1) ◽  
pp. 39-48 ◽  
Author(s):  
Daniel de los Cobos-Vasconcelos ◽  
Nora Ruiz-Ordaz ◽  
Juvencio Galíndez-Mayer ◽  
Héctor Poggi-Varaldo ◽  
Cleotilde Juàrez-Ramírez ◽  
...  
Keyword(s):  
Azo Dyes ◽  
Packed Bed ◽  
Bacterial Consortium ◽  
Biofilm Reactor ◽  
Aerobic Biodegradation ◽  
Two Stage ◽  
Sulfonated Azo Dyes

High-rate anaerobic treatment of Fischer–Tropsch wastewater in a packed-bed biofilm reactor

2010 ◽  
Vol 44 (9) ◽  
pp. 2745-2752 ◽  
Author(s):  
Mauro Majone ◽  
Federico Aulenta ◽  
Davide Dionisi ◽  
Ezio N. D'Addario ◽  
Rosa Sbardellati ◽  
...  
Keyword(s):  
Packed Bed ◽  
Anaerobic Treatment ◽  
Biofilm Reactor ◽  
High Rate ◽  
Fischer Tropsch

Performance of a pilot-scale packed bed reactor for perchlorate reduction using a sulfur oxidizing bacterial consortium

2011 ◽  
Vol 109 (3) ◽  
pp. 637-646 ◽  
Author(s):  
Amber R. Boles ◽  
Teresa Conneely ◽  
Robert McKeever ◽  
Paul Nixon ◽  
Klaus R. Nüsslein ◽  
...  
Keyword(s):  
Packed Bed ◽  
Bacterial Consortium ◽  
Pilot Scale ◽  
Packed Bed Reactor ◽  
Perchlorate Reduction ◽  
Sulfur Oxidizing

Development of a two-stage flexible fibre biofilm reactor for treatment of food processing wastewater

2003 ◽  
Vol 47 (11) ◽  
pp. 189-194 ◽  
Author(s):  
Q.J. Yu ◽  
H. Xu ◽  
D. Yao ◽  
P. Williams
Keyword(s):  
Removal Efficiency ◽  
Food Processing ◽  
Cost Effective ◽  
Biofilm Reactor ◽  
Cod Removal ◽  
Two Stage ◽  
Cod Removal Efficiency ◽  
Cost Effective Treatment ◽  
Removal Efficiencies ◽  
Food Processing Wastewater

Biofilm (or attached growth) reactors can be effectively used to treat organic wastewater from various industries such as food processing industry. They have a number of advantages including high organic loading rates (OLRs) and improved operational stability. A flexible fibre biofim reactor (FFBR) has been developed for efficient and cost effective treatment of food processing wastewater. In the process, simple flexible fibre packing with a very high specific surface area is used as support for microorganisms. The COD removal efficiencies for a range of OLRs have been studied. The FFBR can support an increasingly high OLR, but with a corresponding decrease in the COD removal efficiency. Therefore, a two-stage FFBR was developed to increase the treatment efficiency for systems with high OLRs. Experimental results indicated that a high overall COD removal efficiency could be achieved. At an influent COD of about 2700 mg/L and an OLR of 7.7 kgCOD/m3d, COD removal efficiencies of 76% and 82% were achieved in the first and the second stage of the reactor, respectively. The overall COD removal efficiency was 96%. Therefore, even for wastewater samples with high organic strength, high quality treated effluents could be readily achieved by the use of multiple stage FFBRs.

Aerobic biodegradation of benzene, toluene and ethylbenzene in liquid medium by a bacterial consortium, isolated from non-history clay soil, and their interrelation effect

2000 ◽  
Vol 42 (1-2) ◽  
pp. 25-30
Author(s):  
R. Armon ◽  
T. Arbel ◽  
N. Narkis ◽  
H. Rubin
Keyword(s):  
Liquid Medium ◽  
Aqueous Phase ◽  
Soil Bacteria ◽  
Clay Soil ◽  
Tween 80 ◽  
Bacterial Consortium ◽  
Aerobic Biodegradation ◽  
Second Stage ◽  
Benzene Toluene ◽  
Monoaromatic Hydrocarbons

The present study was carried out in order to investigate the ability of isolated subsurface bacteria, from a non-history clay soil, to biodegrade the non-aqueous phase-liquids (NAPLs), monoaromatic hydrocarbons: benzene, toluene and ethylbenzene. First stage of the study was focussed on stand-alone biodegradation of each contaminant under described conditions. Benzene (100, 260 and 500 mg/l) exposed to isolated soil bacteria for 14 days, was biodegraded 100, 70 and 50%, respectively, ethylbenzene (100, 260 and 500 mg/l) at 85, 87 and 90%, respectively and toluene (100, 260 and 500 mg/l) revealed the lowest rate of 45, 50 and 52%. Toluene and ethylbenzene showed a direct increase in biodegradation associated with increase in their concentration. The second stage was the biodegradation of benzene, toluene and ethylbenzene admixture (all three compounds at the very same concentrations, w/v) in glucose absence and supplemented with Tween 80 (10 and 15 mg/l). The overall biodegradation improved when contaminants were mixed together.

Decolorization of various azo dyes by bacterial consortium

2005 ◽  
Vol 67 (1) ◽  
pp. 55-61 ◽  
Author(s):  
M KHEHRA ◽  
H SAINI ◽  
D SHARMA ◽  
B CHADHA ◽  
S CHIMNI
Keyword(s):  
Azo Dyes ◽  
Bacterial Consortium
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