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In situ biomethanation: Inoculum origin influences acetate consumption rate during hydrogen addition

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In situ biomethanation : Inoculum origin influences acetate consumption rate during hydrogen addition. / Dos Reis Vechi, Nathalia; Agnessens, Laura Mia; Feilberg, Anders; Ottosen, Lars Ditlev Mørck; Kofoed, Michael Vedel Wegener.

I: Bioresource Technology Reports, Bind 14, 100656, 06.2021.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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@article{408f1c614aa64bac9d51a00405cb738c,
title = "In situ biomethanation: Inoculum origin influences acetate consumption rate during hydrogen addition",
abstract = "Biological conversion of carbon dioxide (CO 2) to methane (CH 4) through the exogenous addition of hydrogen (H 2) represent a promising biotechnology for biogas upgrading and energy conversion through the process of H 2-mediated biomethanation. Acetate accumulation has however been observed during H 2 addition, which may deteriorate process stability. Using 13C-isotope techniques, we found that acetate consumption declined by 84% upon H 2 addition in digestate from lab-scale digesters treating agricultural waste products (AD-Manure) but did not decline in digestate based on wastewater treatment sludge (AD-WWT). Dominance of different acetoclastic methanogens, along with the fact that the H 2-sensitive process of syntrophic acetate oxidation (SAO) was responsible for converting 27% of the acetate in AD-Manure and only 4% in AD-WWT, could explain the different response of AD-Manure and AD-WWT. Our results improve the understanding of acetate consumption rates during H 2 addition in reactors treating different organic feedstock, and how these are suited for H 2-mediated biomethanation. ",
keywords = "Acetate, Acetoclastic methanogesis, Biomethanation, Homoacetogenesis, Hydrogen, Syntrophic acetate oxidation",
author = "{Dos Reis Vechi}, Nathalia and Agnessens, {Laura Mia} and Anders Feilberg and Ottosen, {Lars Ditlev M{\o}rck} and Kofoed, {Michael Vedel Wegener}",
year = "2021",
month = jun,
doi = "10.1016/j.biteb.2021.100656",
language = "English",
volume = "14",
journal = "Bioresource Technology Reports",
issn = "2589-014X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - In situ biomethanation

T2 - Inoculum origin influences acetate consumption rate during hydrogen addition

AU - Dos Reis Vechi, Nathalia

AU - Agnessens, Laura Mia

AU - Feilberg, Anders

AU - Ottosen, Lars Ditlev Mørck

AU - Kofoed, Michael Vedel Wegener

PY - 2021/6

Y1 - 2021/6

N2 - Biological conversion of carbon dioxide (CO 2) to methane (CH 4) through the exogenous addition of hydrogen (H 2) represent a promising biotechnology for biogas upgrading and energy conversion through the process of H 2-mediated biomethanation. Acetate accumulation has however been observed during H 2 addition, which may deteriorate process stability. Using 13C-isotope techniques, we found that acetate consumption declined by 84% upon H 2 addition in digestate from lab-scale digesters treating agricultural waste products (AD-Manure) but did not decline in digestate based on wastewater treatment sludge (AD-WWT). Dominance of different acetoclastic methanogens, along with the fact that the H 2-sensitive process of syntrophic acetate oxidation (SAO) was responsible for converting 27% of the acetate in AD-Manure and only 4% in AD-WWT, could explain the different response of AD-Manure and AD-WWT. Our results improve the understanding of acetate consumption rates during H 2 addition in reactors treating different organic feedstock, and how these are suited for H 2-mediated biomethanation.

AB - Biological conversion of carbon dioxide (CO 2) to methane (CH 4) through the exogenous addition of hydrogen (H 2) represent a promising biotechnology for biogas upgrading and energy conversion through the process of H 2-mediated biomethanation. Acetate accumulation has however been observed during H 2 addition, which may deteriorate process stability. Using 13C-isotope techniques, we found that acetate consumption declined by 84% upon H 2 addition in digestate from lab-scale digesters treating agricultural waste products (AD-Manure) but did not decline in digestate based on wastewater treatment sludge (AD-WWT). Dominance of different acetoclastic methanogens, along with the fact that the H 2-sensitive process of syntrophic acetate oxidation (SAO) was responsible for converting 27% of the acetate in AD-Manure and only 4% in AD-WWT, could explain the different response of AD-Manure and AD-WWT. Our results improve the understanding of acetate consumption rates during H 2 addition in reactors treating different organic feedstock, and how these are suited for H 2-mediated biomethanation.

KW - Acetate

KW - Acetoclastic methanogesis

KW - Biomethanation

KW - Homoacetogenesis

KW - Hydrogen

KW - Syntrophic acetate oxidation

UR - http://www.scopus.com/inward/record.url?scp=85102069262&partnerID=8YFLogxK

U2 - 10.1016/j.biteb.2021.100656

DO - 10.1016/j.biteb.2021.100656

M3 - Journal article

VL - 14

JO - Bioresource Technology Reports

JF - Bioresource Technology Reports

SN - 2589-014X

M1 - 100656

ER -