Global modeling and simulation of a three-phase fluidized bed bioreactor

Fuentes, Mauren; Mussati, Miguel C.; Scenna, Nicolás J.; Aguirre, Pío A.

doi:10.1016/j.compchemeng.2008.10.001

Cited by 19 publications

(23 citation statements)

References 25 publications

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“…The use of nonNewtonian liquids for the prediction of gas holdup has been done only on a limited scale 17 -20 . Since most of the industrial effluents behave as power law fluids, there is a vital need to obtain data with a wide range of variables using non-Newtonian liquids and to develop a generalized correlation to represent the data 4,5,15,18,19,21 . Since many biochemical reaction fluids behave as power law nonNewtonian liquids, an attempt has been made to study the effect of fundamental and operating variables on gas holdup, and also to develop a unified correlation for the estimation of gas holdup using the Newtonian and the non-Newtonian liquids.…”

Section: Introductionmentioning

confidence: 99%

Prediction of gas holdup in the three-phase fluidized bed: air/Newtonian and non-Newtonian liquid systems

Sivakumar¹,

Senthilkumar²,

Kannadasan

2010

Polish Journal of Chemical Technology

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The application of the three-phase fluidization technology in wastewater treatment and other biochemical processes has been regularly addressed in the past decades. For the design and development of the threephase fluidized bed reactors, knowledge of the hydrodynamic parameter such as gas holdup is essential and hence in this paper an attempt has been made to study the effect of fundamental and operating variables on gas holdup. On the basis of the experimental results, a unified correlation has been developed to predict gas holdup in the fluidized bed using the Newtonian and the non-Newtonian liquids. The experimental results showed good agreement with those predicted according to the developed correlation.

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Section: Introductionmentioning

confidence: 99%

Prediction of gas holdup in the three-phase fluidized bed: air/Newtonian and non-Newtonian liquid systems

Sivakumar¹,

Senthilkumar²,

Kannadasan

2010

Polish Journal of Chemical Technology

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“…Step-type disturbances were applied to the inlet substrate (glucose and acetic acid) concentration and the feed flow rate, and the maximum efficiency was determined as the disturbances were applied [15]. Lima et al [16] performed theoretical and experimental investigations of domestic wastewater treatment in a UASB reactor and showed satisfactory agreement between numerical and experimental results for the pressure and sludge concentration at the outlet of the reactor.…”

Section: Introductionmentioning

confidence: 99%

“…Fuentes et al [15] carried out experimental and theoretical studies on anaerobic fluidized bed biofilm reactors, which were modeled as dynamic three-phase systems and included the anaerobic degradation of complex substrates and kinetic parameters selected from the literature.…”

Section: Introductionmentioning

confidence: 99%

Optimization of methane production process from synthetic glucose feed in a multi-stage anaerobic bioreactor

Shahperi

Din

Chelliapan

et al. 2016

Desalination and Water Treatment

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A B S T R A C TThe biological conversion of biomass into methane during anaerobic digestion has been studied by many researchers in recent years. In this study, optimization of methane composition during chemical oxygen demand removal was observed in a multi-stage Anaerobic Bioreactor. Synthetic glucose was used as a feed substrate, and the reactor was operated at a hydraulic retention time (HRT) of 1-4 d. Complementary experimental and theoretical test procedures were evaluated for methane optimization. The theoretical methane was recorded as 50.13, 50.02, 50.16, and 50.22% for an HRT of 4, 3, 2, and 1 d, respectively. However, the quantity of methane determined experimentally was significantly lower than the theoretical predictions; this was likely due to the microorganism activity in the reactor that may have interfered with the efficiency of the biogas generation. Experimental data showed a decrease in the methane composition (35.4, 21.2, 19.8, and 18.4% for HRT of 4, 3, 2, and 1 d, respectively) in the reactor system. Thus, the theoretical formula and experimental data together provide an alternative method for the evaluation of bioenergy potential in anaerobic digestion.

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“…In three phase fluidization, the particles are fluidized by the co-current flow of liquid and gas [2][3][4][5][6] or immiscible liquid-liquid phase. The gas or immiscible liquid form discrete bubbles or droplets phase and the liquid a continuous phase containing the solid particles [7].…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Characteristic of Three-Phase (Liquid-Liquid-Solid) Fluidized Beds

Mohammed¹,

Sulaymon²,

Abdul-Rahmun³

2014

J Chem Eng Process Technol

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This work aims to study the hydrodynamic characteristic of three-phase fluidized beds (water, kerosene, spherical plastic or cylindrical PVC particles). The hydrodynamic parameters were investigated ( phase hold-up, droplet diameter, droplet rising velocity, particle types and sizes, holes diameter of the liquid distributor, continuous and dispersed phase velocities. The experimental work was carried out using QVF glass 0.106 m I.D. and 2 m height. Three distributors with whole diameters (2.5, 5, 7 mm) were used. Plastic particles with diameters (8, 15 mm) and PVC particles (3.34 mm) were used as a solid phase. Two methods (quick, closing valves and pressure drop method) were used to measure the continuous, dispersed and solid hold-up. A cine camera was used to measure the droplet diameter and rising velocity. It was found that the droplet diameter and rising velocity increase with increasing superficial continuous and dispersed velocities. A relationships between the dispersed phase hold-up, droplet diameter and rising velocity with continuous and dispersed superficial velocities respectively were obtained Dimensionless correlation for the prediction of the droplet rising velocity was developed. Keywords:

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Global modeling and simulation of a three-phase fluidized bed bioreactor

Cited by 19 publications

References 25 publications

Prediction of gas holdup in the three-phase fluidized bed: air/Newtonian and non-Newtonian liquid systems

Prediction of gas holdup in the three-phase fluidized bed: air/Newtonian and non-Newtonian liquid systems

Optimization of methane production process from synthetic glucose feed in a multi-stage anaerobic bioreactor

Hydrodynamic Characteristic of Three-Phase (Liquid-Liquid-Solid) Fluidized Beds

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