Mixing assessment of an industrial anaerobic digestion reactor using CFD

Abyaneh, Ehsan Zamani; Zarghami, Reza; Krühne, Ulrich; Grundtvig, Ines Pereira Rosinha; Ramin, Pedram; Mostoufi, Navid

doi:10.1016/j.renene.2022.04.147

Cited by 6 publications

(2 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The anaerobic granular sludge (AGS) and wastewater had increased contact, facilitated by the structure of the EGSB reactor that allows for wastewater recycling. These favorable conditions enabled it to effectively treat fresh leachate at an exceptionally high OLR of up Energies 2023, 16, 7496 2 of 15 to 37.94 g COD/L•d and achieve a remarkable COD degradation rate exceeding 80% [4]. Additionally, high-concentration wastewater (such as cheese whey wastewater [5], high-salt fatty acid organic production wastewater [6], corn starch processing wastewater [7], and soft drink industry wastewater [8]) could function normally even under OLRs exceeding 7 gCOD/L•d, and the COD removal rate reached more than 80% (details provided in Table 1).…”

Section: Introductionmentioning

confidence: 99%

“…The study conducted by Aaneh et al also employed CFD to assess the distribution of flow velocity, identification of dead zones, and characterization of residence time distribution (RTD) within the reactor. Additionally, they proposed a compartment model that accurately represents RTD by considering distinct regions of plug flow, continuous mixing zones, dead volumes, and recirculation flow patterns [16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Performance and Energy Utilization Efficiency of an Expanded Granular Sludge Bed Reactor in the Treatment of Cassava Alcohol Wastewater

Xu,

Ji,

Zheng

et al. 2023

Energies

View full text Add to dashboard Cite

In recent years, expanded granular sludge blanket (EGSB) reactor has been widely used in the treatment of high-concentration organic wastewater, but its research mainly focused on treatment efficiency and microbial community composition. There were few studies on the relationship of operation conditions and energy utilization efficiency. Therefore, the methanogenic characteristics and energy utilization efficiency of EGSB reactor were studied by using cassava alcohol wastewater (CAW) as a raw material at (36 ± 1) °C. The results show that the degradation of volatile fatty acids (VFAs) is an important step affecting methane generation compared to the hydrolysis stage. When organic load rate (OLR) was 12.73 gCOD/L·d, the chemical oxygen demand (COD) removal rate was above 95%, the methane production efficiency of raw material was 202.73 mLCH4/ gCOD·d, the four-stage conversion efficiency was the highest, and the energy utilization efficiency was 62.26%, which was the optimal stage for EGSB reactor to treat CAW. These findings support high-efficiency bioenergy recovery from CAW in practice and highlight the potential wide application of high-performance anaerobic reactors for CAW.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance and Energy Utilization Efficiency of an Expanded Granular Sludge Bed Reactor in the Treatment of Cassava Alcohol Wastewater

Xu,

Ji,

Zheng

et al. 2023

Energies

View full text Add to dashboard Cite

show abstract

CFD simulation of anaerobic granular sludge reactors: A review

2023

View full text Add to dashboard Cite

Critical Review of Gas–Liquid Mixing Using Gas-Inducing Impellers: Modeling, CFD Simulation, and ANN Applications

Zamani Abyaneh,

Ein-Mozaffari,

Lohi

2024

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

This manuscript provides a comprehensive overview of gas-inducing reactors (GIRs) and identifies areas for further investigation. It examines the gas induction systems available in the literature, categorizing them into conventional types of 11, 12, and 22, and highlights the importance of focusing on double-impeller systems as a practical solution for large-scale GIRs. The work includes a thorough review of applied models and correlations for estimating critical impeller speed (N C), induced gas flow rate (Q G), influence of fluid’s physical properties, power consumption (P G), gas holdup (εG), and gas–liquid mass transfer coefficient (k L a). Furthermore, it discusses the necessity for further research in understanding non-Newtonian flow behaviors, the impact of fluid physical properties across a broad range of fluids, the interdependence of variables, the identification of key parameters, and stability analysis in large-scale reactors. Additionally, the manuscript addresses the challenges and limitations in experimental techniques, equipment utilization, scale-up processes, and the application of modeling tools such as artificial neural networks (ANN) and computational fluid dynamics (CFD) in the context of gas induction.

show abstract

Mixing assessment of an industrial anaerobic digestion reactor using CFD

Cited by 6 publications

References 43 publications

Performance and Energy Utilization Efficiency of an Expanded Granular Sludge Bed Reactor in the Treatment of Cassava Alcohol Wastewater

Performance and Energy Utilization Efficiency of an Expanded Granular Sludge Bed Reactor in the Treatment of Cassava Alcohol Wastewater

CFD simulation of anaerobic granular sludge reactors: A review

Critical Review of Gas–Liquid Mixing Using Gas-Inducing Impellers: Modeling, CFD Simulation, and ANN Applications

Contact Info

Product

Resources

About