Dynamic modelling of substrate degradation in sequencing batch anaerobic reactors (SBAR)

Fernandes, L.; Kennedy, Kevin J.; Zhang, Ning

doi:10.1016/0043-1354(93)90126-3

Cited by 38 publications

(21 citation statements)

References 9 publications

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“…There are also other advantages regarding the simple configuration of the reactor, such as improved effluent quality control, the nonexistence of hydraulic short circuit, no need for stabilization of the process in view of the discontinuous character of the process, and the absence of an influent distribution system. A typical cycle of the anaerobic reactor operated in batch and fed-batch mode consists of four steps: (i) feeding, which may have a variable filling time, defining the feed strategy as batch and/or fed-batch; (ii) the treatment itself, consisting of biotransforming the wastewater constituents by microorganisms; (iii) sedimentation, when the biomass is in a granular form (ASBR), although when the biomass is immobilized on an inert support (AnSBBR) this step is not necessary; and (iv) discharge, consisting of removal of treated and clarified liquid (Zaiat et al, 2001;Dague et al, 1992;Fernandes et al, 1993).…”

Section: Introductionmentioning

confidence: 99%

BIOHYDROGEN FROM CHEESE WHEY TREATMENT IN AN AnSBBR: ACHIEVING PROCESS STABILITY

Lima

Inoue

Rodrigues

et al. 2015

Braz. J. Chem. Eng.

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-An AnSBBR (anaerobic sequencing batch reactor containing biomass immobilized on an inert support) with liquid phase recirculation, containing a 3.5 L working volume, treated 1.5 L of cheese whey wastewater in 3 and 4 h cycles at 30 °C to produce biohydrogen. From startup the bioreactor presented process instability. To overcome this problem the following measures were taken, however without success: adaptation of the biomass with uncontaminated easily degradable substrates, pH control at very low levels, and a different form of inoculation (natural fermentation of the feed medium). The problem was solved by cooling the feed medium to 4 °C to prevent acidification in the storage container, by eliminating nutrient supplementation to prevent possible formation of H 2 S by sulfate-reducing bacteria and by periodic washing of the support material to improve the food/microorganism ratio. Hence, stable hydrogen production could be achieved with minimal presence of methane (36% H 2 ; 62% CO 2 ; 2% CH 4 ) and the AnSBBR fed with cheese whey (influent concentration of 4070 mgCOD.

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Section: Introductionmentioning

confidence: 99%

BIOHYDROGEN FROM CHEESE WHEY TREATMENT IN AN AnSBBR: ACHIEVING PROCESS STABILITY

Lima

Inoue

Rodrigues

et al. 2015

Braz. J. Chem. Eng.

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“…One of the most used system is the anaerobic sequencing batch reactor (ASBR), which has been widely studied since the early nineties (Fernandes et al, 1993;Brito et al, 1997;Arooj et al, 2007;Kim et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Effect of internal recirculation velocity in an anaerobic sequencing batch reactor (ASBR)

Maurina

Rosa

Beal

et al. 2014

Braz. J. Chem. Eng.

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-This paper discusses the effect of different internal recirculation velocities on the mixture and shear stress on the flocs in an anaerobic sequencing batch reactor (ASBR). Thus, simulations are performed using a computational fluid dynamics (CFD) tool to evaluate this dependency. The analysis of velocities and turbulent kinetic energy indicates that the highest flow evaluated (0.003 m³/s) results in better mixing within the reactor. However, care must be taken with the recycling pipe size, in order to maintain the shear stress inside the range of optimal values.

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“…(DAGUE et al,1992;FERNANDES et al, 1993;SUNG & DAGUE, 1995;ANGEMENT & DAGUE, 1995;TIMUR & ÖSTURK, 1999).…”

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Avaliação de desempenho do reator anaeróbio em batelada seqüencial (ASBR), contendo biomassa imobilizada em pedra pome, para tratamento de esgoto sanitário

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Dynamic modelling of substrate degradation in sequencing batch anaerobic reactors (SBAR)

Cited by 38 publications

References 9 publications

BIOHYDROGEN FROM CHEESE WHEY TREATMENT IN AN AnSBBR: ACHIEVING PROCESS STABILITY

BIOHYDROGEN FROM CHEESE WHEY TREATMENT IN AN AnSBBR: ACHIEVING PROCESS STABILITY

Effect of internal recirculation velocity in an anaerobic sequencing batch reactor (ASBR)

Avaliação de desempenho do reator anaeróbio em batelada seqüencial (ASBR), contendo biomassa imobilizada em pedra pome, para tratamento de esgoto sanitário

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