Enhanced ex-situ biomethanation of hydrogen and carbon dioxide in a trickling filter bed reactor

Thapa, Ajay; Park, Jun-Gyu

doi:10.1016/j.bej.2021.108311

Cited by 23 publications

(9 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other study by Thapa et al. ( 2022 ) showed the conversion of two stoichiometric CO 2 /H 2 ratios into biomethane in a BTF reactor, showing that in the first stage the use of a ratio of 1:4 allowed a CO 2 conversion efficiency of 23.92%, whereas in a second stage a ratio of 1:6 led to a CO 2 conversion efficiency of 92.58%. Recently, other studies have addressed the conversion of CO 2 from syngas using these reactors.…”

Section: Resultsmentioning

confidence: 92%

“…Currently, there are no other studies that evaluate the CO 2 fixation from flue gases in BTF reactors; only a few studies have applied this configuration for CO 2 fixation through biogas upgrading; for instance, Muñoz-Páez and Buitrón (2022) assessed the biomethane production in a BTF using a synthetic gas mixture containing CO 2 /H 2 (40:60% v/v) evaluating the effect of EBRT, pH, and temperature, achieving a CO 2 removal of 24%. Other study by Thapa et al (2022) showed the conversion of two stoichiometric CO 2 /H 2 ratios into biomethane in a BTF reactor, showing that in the first stage the use of a ratio of 1:4 allowed a CO 2 conversion efficiency of 23.92%, whereas in a second stage a ratio of 1:6 led to a CO 2 conversion efficiency of 92.58%. Recently, other studies have addressed the conversion of CO 2 from syngas using these reactors.…”

Section: Operation Of a Biotrickling-filter Reactor For Co 2 Fixation...mentioning

confidence: 93%

See 1 more Smart Citation

Effect of electron donors on CO₂ fixation from a model cement industry flue gas by non‐photosynthetic microbial communities in batch and continuous reactors

Alvarez‐Guzmán,

Muñoz‐Páez,

Valdez‐Vazquez

2023

Microbial Biotechnology

View full text Add to dashboard Cite

The aim of this work was to evaluate the effect of different inorganic compounds as electron donors for the capture of CO2 from a model cement flue gas CO2/O2/N2 (4.2:13.5:82.3% v/v) using a non‐photosynthetic microbial community. The inoculum obtained from a H2‐producing reactor was acclimated to CO2 consumption achieving 100% of CO2 removal after 45 days. Na2S, MnCl2, NaNO2, NH4Cl, Na2S2O3, and FeCl2 were used as energy source for CO2 fixation by the acclimated microbial community showing different efficiencies, being Na2S the best electron donor evaluated (100% of CO2 consumption) and FeCl2 the less effective (28% of CO2 consumption). In all treatments, acetate and propionate were the main endpoint metabolites. Moreover, scaling the process to a continuous laboratory biotrickling filter using Na2S as energy source showed a CO2 consumption of up to 77%. Analysis of the microbial community showed that Na2S and FeCl2 exerted a strong selection on the microbial members in the community showing significant differences (PERMANOVA, p = 0.0001) compared to the control and the other treatments. Results suggest that the CO2 fixing pathways used by the microbial community in all treatments were the 3‐hydroxypropionate‐4‐hydroxybutyrate cycle and the Wood‐Ljungdahl pathway.

show abstract

Section: Resultsmentioning

confidence: 92%

Section: Operation Of a Biotrickling-filter Reactor For Co 2 Fixation...mentioning

confidence: 93%

Effect of electron donors on CO₂ fixation from a model cement industry flue gas by non‐photosynthetic microbial communities in batch and continuous reactors

Alvarez‐Guzmán,

Muñoz‐Páez,

Valdez‐Vazquez

2023

Microbial Biotechnology

View full text Add to dashboard Cite

show abstract

“…This liquid circulation strategy promoted biological reactions and increased the methane level to 98% of the biogas. 15 A continuous stirred tank reactor can be integrated with various delivery and distribution devices (such as a bubble column, tube, or persistent pump) to increase biogas-upgrade capacity. 16 Membrane biofilm reactors have attracted considerable attention in recent years.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the liquid was sprayed from top to bottom in a trickling filter bed, effectively increasing the contact area between the hydrogen and liquid. This liquid circulation strategy promoted biological reactions and increased the methane level to 98% of the biogas …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Spiral-Pipe Gas Anaerobic Digester

Li,

Zhao,

et al. 2024

ACS Omega

View full text Add to dashboard Cite

The reduction of carbon dioxide to methane using hydrogen is an important process in biogas production. However, designing gas anaerobic digesters (GADs) based on this reaction presents several challenges. In this study, we developed an innovative spiral-pipe gas anaerobic digester (SGAD) to increase the displacement distance between the bubbles, thus prolonging the gas retention time and facilitating the reduction of CO2 to CH4 via H2. The process was successfully demonstrated by using a CO2/H2 ratio of 1:3 and a gas-feeding rate of 3.9 L Lr –1 d–1. During the experiment, more than 98% of the CO2 and 96% of the H2 were consumed, resulting in biogas containing ca. 86–96% CH4. Additionally, we applied our proposed evaluation methodology for assessing GAD performance to evaluate the performance of the SGAD. This methodology serves as a reference for evaluating and designing GAD systems. The innovative design of the SGAD and the corresponding evaluation methodology offer new insights into the design of reactors.

show abstract

Bioprocesses Coupling for Biohydrogen Production: Applications and Challenges

Magdalena,

Pérez-Bernal,

del Rosario Rodero

et al. 2024

Springer Water

View full text Add to dashboard Cite

Enhanced ex-situ biomethanation of hydrogen and carbon dioxide in a trickling filter bed reactor

Cited by 23 publications

References 63 publications

Effect of electron donors on CO₂ fixation from a model cement industry flue gas by non‐photosynthetic microbial communities in batch and continuous reactors

Effect of electron donors on CO₂ fixation from a model cement industry flue gas by non‐photosynthetic microbial communities in batch and continuous reactors

Spiral-Pipe Gas Anaerobic Digester

Bioprocesses Coupling for Biohydrogen Production: Applications and Challenges

Contact Info

Product

Resources

About

Enhanced ex-situ biomethanation of hydrogen and carbon dioxide in a trickling filter bed reactor

Cited by 23 publications

References 63 publications

Effect of electron donors on CO2 fixation from a model cement industry flue gas by non‐photosynthetic microbial communities in batch and continuous reactors

Effect of electron donors on CO2 fixation from a model cement industry flue gas by non‐photosynthetic microbial communities in batch and continuous reactors

Spiral-Pipe Gas Anaerobic Digester

Bioprocesses Coupling for Biohydrogen Production: Applications and Challenges

Contact Info

Product

Resources

About

Effect of electron donors on CO₂ fixation from a model cement industry flue gas by non‐photosynthetic microbial communities in batch and continuous reactors

Effect of electron donors on CO₂ fixation from a model cement industry flue gas by non‐photosynthetic microbial communities in batch and continuous reactors