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*

*Kontaktforfatter

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

2 Citationer (Scopus)

Resumé

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.

OriginalsprogEngelsk
Artikelnummer121422
TidsskriftBioresource Technology
Vol/bind287
ISSN0960-8524
DOI
StatusUdgivet - 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

Citer dette

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. I: Bioresource Technology. 2019 ; Bind 287.
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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}",
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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, bind 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.

I: Bioresource Technology, Bind 287, 121422, 01.09.2019.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer 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

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U2 - 10.1016/j.biortech.2019.121422

DO - 10.1016/j.biortech.2019.121422

M3 - Journal article

VL - 287

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

M1 - 121422

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