Effects of fluid dynamics on enhanced biohydrogen production in a pilot stirred tank reactor: CFD simulation and experimental studies

Niño-Navarro, C.; Chairez, Isaac; Torres-Bustillos, Luis G.; Ramírez-Muńoz, J.; Salgado-Manjarrez, Edgar; García-Peña, E. I.

doi:10.1016/j.ijhydene.2016.06.236

Cited by 30 publications

(11 citation statements)

References 33 publications

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“…There are a number of technologies which have been applied at lab-scale to dark fermentation by bacteria to decrease product inhibition by H 2 and significantly increase H 2 production. Research in this area is ongoing but examples of these technologies include particular mixing regimes [ 152 ], gas sparging [ 153 ], ultrasonication [ 154 ], gas separation by membranes [ 155 ], the maintenance of low-pressure fermentation environments [ 156 ] and electrochemical removal [ 157 ]. For example, Mizuno et al [ 153 ] demonstrated that the H 2 yield from anaerobic communities growing on glucose could be increased from 0.85 mol-H 2 mol-hexose −1 to 1.43 mol-H 2 mol-hexose −1 by using a flow of N 2 gas to continuously sparge the fermentation system.…”

Section: Emerging Opportunities For Industrial Biofuel Productionmentioning

confidence: 99%

“…Other investigators have reported comparable improvements to H 2 yields when sparging with CO 2 [ 158 ]. In another study by Niño-Navarro et al [ 152 ], it was reported that a selection between the use of two common impeller designs resulted in a greater than 2-fold increase in fermentative H 2 productivity which the authors attributed to mass transfer of H 2 gas from the liquid phase. More recently, Ramírez-Morales et al [ 155 ] successfully implemented the use of polymeric membranes to separate H 2 from the headspace gas created during fermentation by a microbial consortium native to tobacco wastewater.…”

Section: Emerging Opportunities For Industrial Biofuel Productionmentioning

confidence: 99%

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The Anaerobic Fungi: Challenges and Opportunities for Industrial Lignocellulosic Biofuel Production

et al. 2021

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Lignocellulose is a promising feedstock for biofuel production as a renewable, carbohydrate-rich and globally abundant source of biomass. However, challenges faced include environmental and/or financial costs associated with typical lignocellulose pretreatments needed to overcome the natural recalcitrance of the material before conversion to biofuel. Anaerobic fungi are a group of underexplored microorganisms belonging to the early diverging phylum Neocallimastigomycota and are native to the intricately evolved digestive system of mammalian herbivores. Anaerobic fungi have promising potential for application in biofuel production processes due to the combination of their highly effective ability to hydrolyse lignocellulose and capability to convert this substrate to H2 and ethanol. Furthermore, they can produce volatile fatty acid precursors for subsequent biological conversion to H2 or CH4 by other microorganisms. The complex biological characteristics of their natural habitat are described, and these features are contextualised towards the development of suitable industrial systems for in vitro growth. Moreover, progress towards achieving that goal is reviewed in terms of process and genetic engineering. In addition, emerging opportunities are presented for the use of anaerobic fungi for lignocellulose pretreatment; dark fermentation; bioethanol production; and the potential for integration with methanogenesis, microbial electrolysis cells and photofermentation.

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Section: Emerging Opportunities For Industrial Biofuel Productionmentioning

confidence: 99%

Section: Emerging Opportunities For Industrial Biofuel Productionmentioning

confidence: 99%

The Anaerobic Fungi: Challenges and Opportunities for Industrial Lignocellulosic Biofuel Production

et al. 2021

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“…The density of medium is 1000 kg/m 3 and the viscosity is 0.001 kg m −1 s −1 . Using the MRF approach and k−ϵ model, the 3D turbulent flow field has been modeled in this study by Ninõ-Navarro et al 78 CSTR on the pilot scale after Rushon and PB4 turbines for (C/D t = 0.5 and D i = 1) gave the highest yield of 1.8 mol H 2 per mol of glucose substrate and 440.63 mL/Lh of 31.6% purity for PB4 OC impeller. 78 The studies performed on axial pumping impellers demonstrated a greater yield of biohydrogen (88.4% of the theoretical value), as shown in Figure 11.…”

Section: Simulation Of Pilot Scale Cstrmentioning

confidence: 99%

Dark Fermentative Biohydrogen Production: Recent Advances and Challenges

Sohale,

Janardanan,

Yadav

et al. 2023

Ind. Eng. Chem. Res.

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The growing demand for hydrogen gas as a fuel has led to the development of efficient technologies for production of hydrogen from renewable sources. Biohydrogen generation technologies such as “waste to wealth” systems have enormous potential for commercial applications and scaleup. In the present Review, the dependence of various process conditions and computational fluid dynamics (CFD) simulation studies on the yield, production rate, and hydrodynamics of the reactors has been discussed on various scales of operation. The optimum operating parameters, scaleup aspects, and comparative analysis for various feedstocks have shown sugar cane molasses as a potential substrate along with other cosubstrates like groundnut deoiled cake for dark fermentative biohydrogen production on a commercial scale. In addition, the works of various research groups for pilot scale biohydrogen production and a roadmap toward the future work in this field has been discussed.

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“…For the PFR model, no backmixing happened and it was conducive to product diffusion . From the experimental scale to the productive scale, CFD simulation reflects the flow patterns and mass transfer of actual operations. , Recently, it was widely utilized to explain the complex physical phenomenon in biochemical reactors for wastewater treatment. ,− …”

Section: Introductionmentioning

confidence: 99%

“…21 From the experimental scale to the productive scale, CFD simulation reflects the flow patterns and mass transfer of actual operations. 26,27 Recently, it was widely utilized to explain the complex physical phenomenon in biochemical reactors for wastewater treatment. 26,28−31 ■ MATERIALS AND METHODS Reactor Construction.…”

Section: ■ Introductionmentioning

confidence: 99%

Hydrodynamics Analysis for an Upflow Integrated Anaerobic Digestion Reactor with Microbial Electrolysis under Different Hydraulic Retention Times: Effect of Bioelectrode Spatial Distribution on Functional Communities Involved in Methane Production and Organic Removal

Gao

Sangeetha

Guo

et al. 2019

ACS Sustainable Chem. Eng.

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The electrode plays a significant role in an integrated anaerobic digestion reactor with microbial electrolysis that can increase energy production. Optimizing electrode positions by means of hydrodynamic analysis was proven feasible. In this work, different spatial distributions of bioelectrodes in upflow integrated anaerobic digestion reactors were researched to obtain a highly effective configuration. The hydrodynamic characters of each reactor were evaluated by a residence time distribution (RTD) test and computational fluid dynamics (CFD) simulation. The optimal structural design in this work was in that electrodes were placed at the bottom of the reactor with the cathode placed above the anode. It had an obvious hydrodynamics advantage and generated maximum methane production of 304.5 mL CH4/L reactor/day and a maximum chemical oxygen demand (COD) removal of 92.1% at a hydraulic retention time (HRT) of 36 h. The better flow pattern was in favor of mass transfer and further improved the reactor performance. The hydrodynamics character also affected the distribution of functional communities attached to the electrode surface. Results implied that Enterobacteriaceae and Desulfovibrio were sensitive to hydrodynamic shear. Methanogens on electrodes had the highest diversity under higher hydrodynamic shear when electrodes were placed on the bottom of the reactors with the best flow regime among that of other positions.

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Effects of fluid dynamics on enhanced biohydrogen production in a pilot stirred tank reactor: CFD simulation and experimental studies

Cited by 30 publications

References 33 publications

The Anaerobic Fungi: Challenges and Opportunities for Industrial Lignocellulosic Biofuel Production

The Anaerobic Fungi: Challenges and Opportunities for Industrial Lignocellulosic Biofuel Production

Dark Fermentative Biohydrogen Production: Recent Advances and Challenges

Hydrodynamics Analysis for an Upflow Integrated Anaerobic Digestion Reactor with Microbial Electrolysis under Different Hydraulic Retention Times: Effect of Bioelectrode Spatial Distribution on Functional Communities Involved in Methane Production and Organic Removal

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