Modelling anaerobic biofilm reactors—A review

Saravanan, Vignesh; Sreekrishnan, T.R.

doi:10.1016/j.jenvman.2005.10.002

Cited by 92 publications

(33 citation statements)

References 96 publications

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“…The biofilm also increases the particle's size, thereby increasing the drag force exerted on it by the liquid flowing upward. The particles in a fluidized bed are expected to segregate according to size and mean density (Saravanan and Sreekrishnan, 2006). The results obtained for the AFBR containing PVC were in accordance with those of Hidalgo and García-Encina (2002), who observed that a decrease of the expansion provoked a biomass increase in the reactor and a decrease in the removal rate of organic matter.…”

Section: Evaluation Of Anaerobic Phenol Degradation By the Mixed Cultsupporting

confidence: 83%

Phenol degradation in an anaerobic fluidized bed reactor packed with low density support materials

Sancinetti

Sader

Varesche

et al. 2012

Braz. J. Chem. Eng.

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-The objective of this research was to study phenol degradation in anaerobic fluidized bed reactors (AFBR) packed with polymeric particulate supports (polystyrene -PS, polyethylene terephthalate -PET, and polyvinyl chloride -PVC). The reactors were operated with a hydraulic retention time (HRT) of 24 h. The influent phenol concentration in the AFBR varied from 100 to 400 mg L -1 , resulting in phenol removal efficiencies of ~100%. The formation of extracellular polymeric substances yielded better results with the PVC particles; however, deformations in these particles proved detrimental to reactor operation. PS was found to be the best support for biomass attachment in an AFBR for phenol removal. The AFBR loaded with PS was operated to analyze the performance and stability for phenol removal at feed concentrations ranging from 50 to 500 mg L -1 . The phenol removal efficiency ranged from 90-100%.

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Section: Evaluation Of Anaerobic Phenol Degradation By the Mixed Cultsupporting

confidence: 83%

Phenol degradation in an anaerobic fluidized bed reactor packed with low density support materials

Sancinetti

Sader

Varesche

et al. 2012

Braz. J. Chem. Eng.

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“…grass silage, cattle manure and agricultural substrates, [34][35][36][37] and has been modified and extended by a great number of research groups. [38][39][40][41][42] Several studies report good model performance. 42,43 A MATLAB script was developed to connect ADM1 to DyBiM, since the models needed different solvers.…”

Section: Modelmentioning

confidence: 99%

Demand-Orientated Power Production from Biogas: Modeling and Simulations under Swedish Conditions

et al. 2015

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The total share of intermittent renewable electricity is increasing, intensifying the need for power balancing in future electricity systems. Demand-orientated combined heat and power (CHP) production from biogas has potential for this purpose. An agricultural biogas plant, using cattle manure and sugar beet for biogas and CHP production was analysed here. The model Dynamic Biogas plant Model (DyBiM) was developed and connected to the Anaerobic Digestion Model No. 1 (ADM1). Flexible scenarios were simulated and compared against a reference scenario with continuous production, in order to evaluate the technical requirements and economic implications of demand-orientated production. The study was set in Swedish conditions regarding electricity and heat price and the flexibility approaches assessed were increased CHP and gas storage capacity and feeding management. The results showed that larger gas storage capacity was needed for demand-orientated CHP production, but that feeding management reduced the storage requirement because of fast biogas production response to feeding. Income from 2 electricity increased by 10%, applying simple electricity production strategies to a doubled CHP capacity. However, as a result of the currently low Swedish diurnal electricity price variation and lack of subsidies for demand-orientated electricity production, the increase in income was too low to cover the investment costs. Nevertheless, DyBiM proved to be a useful modelling tool for assessing the economic outcome of different flexibility scenarios for demand-orientated CHP production.

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“…Full scale anaerobic fluidized bed reactors are not common (Saravanan and Sreekrishnan, 2006). However, in experiments to produce hydrogen from glucose fermentation in this reactor configuration using expanded clay as support material, a satisfactory result was achieved (2.49 mol H 2 .mol -1 glucose), with 90% glucose consumption for a HRT of 2 hours (Amorim et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…It achieves high efficiency with relatively low hydraulic retention times (Amorim et al, 2009). This reactor configuration favors the retention of high biomass concentration, substantially reducing the area and volume required for removal efficiency and, consequently, increasing the organic matter removal (Saravanan and Sreekrishnan, 2006). Different support materials can be used for biomass immobilization, such as sand, activated charcoal, nylon, polystyrene (Martinelli and Silva, 2005), clay, glass beads and others.…”

Section: Introductionmentioning

confidence: 99%

Anaerobic degradation of linear alkylbenzene sulfonate in fluidized bed reactor

Oliveira

Costa

Duarte

et al. 2010

Braz. J. Chem. Eng.

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-An anaerobic fluidized bed reactor was used to assess the degradation of the surfactant linear alkylbenzene sulfonate (LAS). The reactor was inoculated with sludge from an UASB reactor treating swine wastewater and was fed with a synthetic substrate supplemented with LAS. Sand was used as support material for biomass immobilization. The reactor was kept in a controlled temperature chamber (30±1 ºC) and operated with a hydraulic retention time (HRT) of 18 h. The LAS concentration was gradually increased from 8.2±1.3 to 45.8±5.4 mg.L -1 . The COD removal was 91%, on average, when the influent COD was 645±49 mg.L -1 . The results obtained by chromatographic analysis showed that the reactor removed 93% of the LAS after 270 days of operation.

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Modelling anaerobic biofilm reactors—A review

Cited by 92 publications

References 96 publications

Phenol degradation in an anaerobic fluidized bed reactor packed with low density support materials

Phenol degradation in an anaerobic fluidized bed reactor packed with low density support materials

Demand-Orientated Power Production from Biogas: Modeling and Simulations under Swedish Conditions

Anaerobic degradation of linear alkylbenzene sulfonate in fluidized bed reactor

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