Influence of operating pressure on the biological hydrogen methanation in trickle-bed reactors

Ullrich, Timo; Lindner, Jonas; Bär, Katharina; Mörs, Friedemann; Graf, Frank; Lemmer, Andreas

doi:10.1016/j.biortech.2017.09.069

Cited by 54 publications

(63 citation statements)

References 25 publications

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“…As shown in Ullrich et al. (), the pH value dropped to 6.34 ± 0.03 when the pressure was increased to 9 bar due to the improved solubility of the injected CO 2 .…”

Section: Resultsmentioning

confidence: 77%

“…The operating pressure of the modulation experiments was set at 5 bar absolute to avoid a possible impairment of the results by low pH values. As shown in Ullrich et al (2018), the pH value dropped to 6.34 ± 0.03 when the pressure was increased to 9 bar due to the improved solubility of the injected CO 2 .…”

Section: Operating Parametersmentioning

confidence: 93%

“…Pressurised TBRs were investigated in Ullrich et al. (), where the methane content of the TBR was increased by 34 vol‐% with an increase in pressure from one to nine bar absolute.…”

Section: Introductionmentioning

confidence: 99%

“…The volumetric productivity of biological hydrogen methanation (BHM) can be improved by enhancing the gas-liquid mass transfer (Seifert, Rittmann, & Herwig, 2014). Thus, over the past few years, trickle bed reactors (TBRs) have been investigated in order to improve BHM performance (Burkhardt, Koschack, & Busch, 2015;Strübing, Huber, Lebuhn, Drewes, & Koch, 2017;Ullrich et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…According to Henry`s law, the amount of a dissolved gas in the liquid phase is proportional to its partial pressure in the gas phase. Pressurised TBRs were investigated in Ullrich et al (2018), where the methane content of the TBR was increased by 34 vol-% with an increase in pressure from one to nine bar absolute.…”

Section: Introductionmentioning

confidence: 99%

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Performance enhancement of biological methanation with trickle bed reactors by liquid flow modulation

Ullrich

Lemmer

2018

GCB Bioenergy

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Experiments were carried out to investigate the influence of liquid flow modulation of trickle bed reactors (TBR) on biological hydrogen methanation (BHM).The modulation promises to improve the gas-liquid mass transfer and has already been demonstrated in trickle bed reactors of other fields of application. Therefore, the influence of four different circulation intervals with pauses from two to 1,440 min was investigated in TBR for BHM. The results showed that as pause intervals without sprinkling became longer, the methane content increased from 88.61 ± 1.58 vol-% at a circulation interval of 2 min to up to 97.19 ± 0.46 vol-% at a circulation interval of 1,440 min. The analysis of the process liquid indicated a stable biological process at any trial phase. This study demonstrated that the performance of TBR on BHM can be significantly improved by liquid flow modulation, thus significantly reducing operating costs. K E Y W O R D Sbiological methanation, hydrogen, liquid flow modulation, power-to-gas, renewable energy, trickle-bedreactor

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“…As shown in Ullrich et al. (), the pH value dropped to 6.34 ± 0.03 when the pressure was increased to 9 bar due to the improved solubility of the injected CO 2 .…”

Section: Resultsmentioning

confidence: 77%

Section: Operating Parametersmentioning

confidence: 93%

“…Pressurised TBRs were investigated in Ullrich et al. (), where the methane content of the TBR was increased by 34 vol‐% with an increase in pressure from one to nine bar absolute.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance enhancement of biological methanation with trickle bed reactors by liquid flow modulation

Ullrich

Lemmer

2018

GCB Bioenergy

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Comparative analysis of the effect of cell immobilization on the hydrogenothrophic biomethanation of CO₂

et al. 2021

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Carbon capture and utilization (CCU) has been offered as a potential technological solution for mitigating the greenhouse gas emissions and climate change concern worldwide. Anaerobically carbon utilization has started to be in the agenda of researchers in recent years since this approach offers significant advantages such as use of catalysis reactions through environmentally friendly microorganisms under low temperature and pressure operational conditions. Moreover, a cleaner and more effective bioenergy production is realized in the form of biomethane. This study aimed to exploit the merits of cell immobilization in order to provide a stable hydrogenotrophic biomethanation process. For this purpose, two different immobilized bioreactors packed with plastic moving bed biofilm reactor (MBBR) and glass beads packing materials were comparatively investigated. To the best of our knowledge, these two immobilization materials were used for the first time for this purpose. Two different bioreactor configurations were compared for the performance parameters such as methane formation rate, H2 consumption and methane contents in the headspace. Methane content in the headspace of these bioreactors were measured to be 80 and 75% for MBBR bioreactor and glass bead bioreactors, respectively. In addition, methane formation rates (MFR) of 5.14 and 4.8 m3/m3/day were achieved in MBBR and glass beads bioreactors, respectively. Even though both bioreactor configurations performed highly efficient biomethanation of CO2, the statistical evaluation of the results indicated that MBBR performance was more favourable for hydrogenotrophic biomethanation. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Methanation

Schildhauer,

Gantenbein

2024

Green Energy and Technology

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Influence of operating pressure on the biological hydrogen methanation in trickle-bed reactors

Cited by 54 publications

References 25 publications

Performance enhancement of biological methanation with trickle bed reactors by liquid flow modulation

Performance enhancement of biological methanation with trickle bed reactors by liquid flow modulation

Comparative analysis of the effect of cell immobilization on the hydrogenothrophic biomethanation of CO₂

Methanation

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Influence of operating pressure on the biological hydrogen methanation in trickle-bed reactors

Cited by 54 publications

References 25 publications

Performance enhancement of biological methanation with trickle bed reactors by liquid flow modulation

Performance enhancement of biological methanation with trickle bed reactors by liquid flow modulation

Comparative analysis of the effect of cell immobilization on the hydrogenothrophic biomethanation of CO2

Methanation

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Comparative analysis of the effect of cell immobilization on the hydrogenothrophic biomethanation of CO₂