Biogas upgrading with hydrogenotrophic methanogenic biofilms

Karen Maegaard, Emilio Garcia-Robledo, Michael V.W. Kofoed, Laura M. Agneessens, Nadieh de Jonge, Jeppe L. Nielsen, Lars D.M. Ottosen, Lars Peter Nielsen, Niels Peter Revsbech*

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

3 Citations (Scopus)

Abstract

Hydrogen produced from periodic excess of electrical energy may be added to biogas reactors where it is converted to CH 4 that can be utilized in the existing energy grid. The major challenge with this technology is gas-to-liquid mass transfer limitation. The microbial conversions in reactors designed for hydrogenotrophic methanogenesis were studied with microsensors for H 2 , pH, and CO 2 . The H 2 consumption potential was dependent on the CO 2 concentration, but could partially recover after CO 2 depletion. Reactors with 3-dimensional biofilm carrier material and a large gas headspace allowed for a methanogenic biofilm in direct contact with the gas phase. A high density of Methanoculleus sp. in the biofilm mediated a high rate of CH 4 production, and it was calculated that a reactor filled with 75% carrier material could mediate a biogas upgrading from 50 to 95% CH 4 within 24 h when an equivalent amount of H 2 was added.

Original languageEnglish
Article number121422
JournalBioresource Technology
Volume287
ISSN0960-8524
DOIs
Publication statusPublished - 1 Sep 2019

Fingerprint

Biofuels
Biogas
Biofilms
Carbon Monoxide
biogas
biofilm
Gases
Microsensors
gas
Contacts (fluid mechanics)
Hydrogen
methanogenesis
Mass transfer
energy
mass transfer
Liquids
hydrogen
liquid
reactor
material

Keywords

  • Biofilm
  • CO limitation
  • Mass transfer
  • Methane
  • Methanogenesis
  • Microsensor

Cite this

Maegaard, K., Garcia-Robledo, E., Kofoed, M. V. W., Agneessens, L. M., de Jonge, N., Nielsen, J. L., ... Revsbech, N. P. (2019). Biogas upgrading with hydrogenotrophic methanogenic biofilms. Bioresource Technology, 287, [121422]. https://doi.org/10.1016/j.biortech.2019.121422
Maegaard, Karen ; Garcia-Robledo, Emilio ; Kofoed, Michael V.W. ; Agneessens, Laura M. ; de Jonge, Nadieh ; Nielsen, Jeppe L. ; Ottosen, Lars D.M. ; Nielsen, Lars Peter ; Revsbech, Niels Peter. / Biogas upgrading with hydrogenotrophic methanogenic biofilms. In: Bioresource Technology. 2019 ; Vol. 287.
@article{8598333df9d84754935c5f9c9f004a74,
title = "Biogas upgrading with hydrogenotrophic methanogenic biofilms",
abstract = "Hydrogen produced from periodic excess of electrical energy may be added to biogas reactors where it is converted to CH 4 that can be utilized in the existing energy grid. The major challenge with this technology is gas-to-liquid mass transfer limitation. The microbial conversions in reactors designed for hydrogenotrophic methanogenesis were studied with microsensors for H 2 , pH, and CO 2 . The H 2 consumption potential was dependent on the CO 2 concentration, but could partially recover after CO 2 depletion. Reactors with 3-dimensional biofilm carrier material and a large gas headspace allowed for a methanogenic biofilm in direct contact with the gas phase. A high density of Methanoculleus sp. in the biofilm mediated a high rate of CH 4 production, and it was calculated that a reactor filled with 75{\%} carrier material could mediate a biogas upgrading from 50 to 95{\%} CH 4 within 24 h when an equivalent amount of H 2 was added.",
keywords = "Biofilm, CO limitation, Mass transfer, Methane, Methanogenesis, Microsensor",
author = "Karen Maegaard and Emilio Garcia-Robledo and Kofoed, {Michael V.W.} and Agneessens, {Laura M.} and {de Jonge}, Nadieh and Nielsen, {Jeppe L.} and Ottosen, {Lars D.M.} and Nielsen, {Lars Peter} and Revsbech, {Niels Peter}",
year = "2019",
month = "9",
day = "1",
doi = "10.1016/j.biortech.2019.121422",
language = "English",
volume = "287",
journal = "Bioresource Technology",
issn = "0960-8524",
publisher = "Elsevier",

}

Maegaard, K, Garcia-Robledo, E, Kofoed, MVW, Agneessens, LM, de Jonge, N, Nielsen, JL, Ottosen, LDM, Nielsen, LP & Revsbech, NP 2019, 'Biogas upgrading with hydrogenotrophic methanogenic biofilms', Bioresource Technology, vol. 287, 121422. https://doi.org/10.1016/j.biortech.2019.121422

Biogas upgrading with hydrogenotrophic methanogenic biofilms. / Maegaard, Karen; Garcia-Robledo, Emilio; Kofoed, Michael V.W.; Agneessens, Laura M.; de Jonge, Nadieh; Nielsen, Jeppe L.; Ottosen, Lars D.M.; Nielsen, Lars Peter; Revsbech, Niels Peter.

In: Bioresource Technology, Vol. 287, 121422, 01.09.2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Biogas upgrading with hydrogenotrophic methanogenic biofilms

AU - Maegaard, Karen

AU - Garcia-Robledo, Emilio

AU - Kofoed, Michael V.W.

AU - Agneessens, Laura M.

AU - de Jonge, Nadieh

AU - Nielsen, Jeppe L.

AU - Ottosen, Lars D.M.

AU - Nielsen, Lars Peter

AU - Revsbech, Niels Peter

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Hydrogen produced from periodic excess of electrical energy may be added to biogas reactors where it is converted to CH 4 that can be utilized in the existing energy grid. The major challenge with this technology is gas-to-liquid mass transfer limitation. The microbial conversions in reactors designed for hydrogenotrophic methanogenesis were studied with microsensors for H 2 , pH, and CO 2 . The H 2 consumption potential was dependent on the CO 2 concentration, but could partially recover after CO 2 depletion. Reactors with 3-dimensional biofilm carrier material and a large gas headspace allowed for a methanogenic biofilm in direct contact with the gas phase. A high density of Methanoculleus sp. in the biofilm mediated a high rate of CH 4 production, and it was calculated that a reactor filled with 75% carrier material could mediate a biogas upgrading from 50 to 95% CH 4 within 24 h when an equivalent amount of H 2 was added.

AB - Hydrogen produced from periodic excess of electrical energy may be added to biogas reactors where it is converted to CH 4 that can be utilized in the existing energy grid. The major challenge with this technology is gas-to-liquid mass transfer limitation. The microbial conversions in reactors designed for hydrogenotrophic methanogenesis were studied with microsensors for H 2 , pH, and CO 2 . The H 2 consumption potential was dependent on the CO 2 concentration, but could partially recover after CO 2 depletion. Reactors with 3-dimensional biofilm carrier material and a large gas headspace allowed for a methanogenic biofilm in direct contact with the gas phase. A high density of Methanoculleus sp. in the biofilm mediated a high rate of CH 4 production, and it was calculated that a reactor filled with 75% carrier material could mediate a biogas upgrading from 50 to 95% CH 4 within 24 h when an equivalent amount of H 2 was added.

KW - Biofilm

KW - CO limitation

KW - Mass transfer

KW - Methane

KW - Methanogenesis

KW - Microsensor

UR - http://www.scopus.com/inward/record.url?scp=85065447645&partnerID=8YFLogxK

U2 - 10.1016/j.biortech.2019.121422

DO - 10.1016/j.biortech.2019.121422

M3 - Journal article

AN - SCOPUS:85065447645

VL - 287

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

M1 - 121422

ER -