Experimental and theoretical study of membrane-aerated biofilm reactor behavior under different modes of oxygen supply for the treatment of synthetic wastewater

González-Brambila, M.; Monroy, O.; López‐Isunza, Felipe

doi:10.1016/j.ces.2006.03.049

Cited by 39 publications

(18 citation statements)

References 26 publications

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“…9 presents the evolution of the rate of microbial growth during the first 6.0 h of batch operation. The comparison of these transients shows that the main differences between the homo- geneous model and the heterogeneous model are: a narrower length of cell activity and smaller rate values of microbial growth for the predictions using the homogeneous model [29]. The predicted values for the rate of microbial growth adopted the homogeneous model are agreement with the predictions [29].…”

Section: Homogeneous Model Predictionsupporting

confidence: 62%

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Membrane‐Aerated Biofilm Reactor Behaviors for the Treatment of High‐Strength Ammonium Industrial Wastewater

Chen

Zhao

et al. 2009

Chem Eng & Technol

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A single-tube membrane-aerated biofilm reactor (MABR) was used to investigate the effect of the reaction time, reaction temperature, pH value, C/N ratio, and sludge concentration on the removal rates of the NO x --N and COD in highstrength ammonium industrial water by supplying oxygen during the batch experiment. The homogeneous mathematical model is developed to predict their transient responses using Monod kinetics with dual substrate limitation. The model incorporates mass transport by convection and diffusion in the surrounding liquid contained inside the interconnected pores and channels within the biofilm. Transport and kinetic parameters are estimated from experiments and the model successfully predicts concentration measurements in some of the sets of experiments.

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Section: Homogeneous Model Predictionsupporting

confidence: 62%

“…(6) was approximated by a quadrature, using the weights from the orthogonal collocation approximation. The resulting set of nonlinear ODEs was solved with a fourth-order RungeKutta method [29]. …”

Section: Numerical Solution For the Moving Boundary Problemmentioning

confidence: 99%

Membrane‐Aerated Biofilm Reactor Behaviors for the Treatment of High‐Strength Ammonium Industrial Wastewater

Chen

Zhao

et al. 2009

Chem Eng & Technol

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“…In case of MABR, the adjusted parameter used to calibrate the model was kl (Table 3) whose observed magnitude is within the wide range (0.003-0.42 m/h) reported for immobilized biofilms (Matsumoto et al, 2007;González-Brambila et al, 2006). This parameter seems to be affected by the up-flow velocity (V up ) of the liquid.…”

Section: Calibration and Validation Of The Icnrmmentioning

confidence: 95%

“…This model is based on two coupled models: a) COD removal at the UASB and MABR based on the AD1 and on a homogeneous model (González-Brambila et al, 2006), and b) ammonia nitrogen removal at the DNB based on a multiple species model (Huiliñir et al, 2010). The model's assumptions are À The UASB is a continuous stirred tank reactor (CSTR), and the MABR consists of two parallel CSTR: ESC and MABR.…”

Section: The Icnrmmentioning

confidence: 99%

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Operation and dynamic modeling of a novel integrated anaerobic–aerobic–anoxic reactor for sewage treatment

Plascencia-Jatomea

González

Gómez

et al. 2015

Chemical Engineering Science

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A three‐dimensional computer model analysis of three hypothetical biofilm detachment mechanisms

Chambless

Stewart²

2007

Biotech & Bioengineering

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Three hypothetical mechanisms of detachment were incorporated into a three-dimensional computer model of biofilm development. The model integrated processes of substrate utilization, substrate diffusion, growth, cell advection, and detachment in a cellular automata framework. The purpose of this investigation was to characterize each of the mechanisms with respect to four criteria: the resulting biofilm structure, the existence of a steady state, the propensity for sloughing events, and the dynamics during starvation. The three detachment mechanisms analyzed represented various physical and biological influences hypothesized to affect biofilm detachment. The first invoked the concept of fluid shear removing biomass that protrudes far above the surface and is therefore subjected to relatively large drag forces. The second pathway linked detachment to changes in the local availability of a nutrient. The third pathway simulated an erosive process in which individual cells are lost from the surface of a biofilm cell cluster. The detachment mechanisms demonstrated diverse behaviors with respect to the four analysis criteria. The height-dependant mechanism produced flat, steady state biofilms that lacked sloughing events. Detachment based on substrate limitation produced significant sloughing events. The resulting biofilm structures included distinct, hollow clusters separated by channels. The erosion mechanism produced neither a non-zero steady state nor sloughing events. A mechanism combining all three-detachment mechanisms produced mushroom-like structures. The dynamics of biofilm decay during starvation were distinct for each detachment mechanism. These results show that detachment is a critical determinant of biofilm structure and of the dynamics of biofilm accumulation and loss.

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Experimental and theoretical study of membrane-aerated biofilm reactor behavior under different modes of oxygen supply for the treatment of synthetic wastewater

Cited by 39 publications

References 26 publications

Membrane‐Aerated Biofilm Reactor Behaviors for the Treatment of High‐Strength Ammonium Industrial Wastewater

Membrane‐Aerated Biofilm Reactor Behaviors for the Treatment of High‐Strength Ammonium Industrial Wastewater

Operation and dynamic modeling of a novel integrated anaerobic–aerobic–anoxic reactor for sewage treatment

A three‐dimensional computer model analysis of three hypothetical biofilm detachment mechanisms

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