Removal of sulfur contaminants from biogas to enable direct catalytic methanation

Christian Dannesboe; John Bøgild Hansen; Ib Johannsen

doi:10.1007/s13399-019-00570-7

Removal of sulfur contaminants from biogas to enable direct catalytic methanation

Christian Dannesboe, John Bøgild Hansen, Ib Johannsen

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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Abstract

In the near future, renewable energy sources will replace fossil energy. To allow full carbon utilization of renewable biomass, we have demonstrated a possible integration between a biogas reactor, an electrolysis unit, and a catalytic methanation reactor. Stringent removal of all sulfur contaminants in raw biogas is required to enable this integration. We demonstrate how existing bulk sulfur removal solutions, like a biotrickling filter loaded with Acidithiobacillus thiooxidans and impregnated activated carbon, are unable to meet this requirement. Only the main sulfur contaminant hydrogen sulfide (H ₂S) can effectively be removed. Contaminants carbon disulfide (CS ₂), dimethyl sulfide (DMS), and carbonyl sulfide (COS) will leak through the carbon filter, long before hydrogen sulfide can be detected. Utilization of surplus oxygen from the combined system is proven problem free and allows sulfur removal without introducing contaminants. Provided that a recommended sulfur guard is included, the proposed design is ready for full-scale implementation.

Original language	English
Journal	Biomass Conversion and Biorefinery
Volume	11
Issue	5
Pages (from-to)	1823-1834
Number of pages	12
ISSN	2190-6823
DOIs	https://doi.org/10.1007/s13399-019-00570-7
Publication status	Published - Oct 2021

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Removal of sulfur contaminants from biogas for direct catalytic methanation BCB, PublishedFinal published version, 1.15 MBLicence: CC BY

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title = "Removal of sulfur contaminants from biogas to enable direct catalytic methanation",

abstract = "In the near future, renewable energy sources will replace fossil energy. To allow full carbon utilization of renewable biomass, we have demonstrated a possible integration between a biogas reactor, an electrolysis unit, and a catalytic methanation reactor. Stringent removal of all sulfur contaminants in raw biogas is required to enable this integration. We demonstrate how existing bulk sulfur removal solutions, like a biotrickling filter loaded with Acidithiobacillus thiooxidans and impregnated activated carbon, are unable to meet this requirement. Only the main sulfur contaminant hydrogen sulfide (H 2S) can effectively be removed. Contaminants carbon disulfide (CS 2), dimethyl sulfide (DMS), and carbonyl sulfide (COS) will leak through the carbon filter, long before hydrogen sulfide can be detected. Utilization of surplus oxygen from the combined system is proven problem free and allows sulfur removal without introducing contaminants. Provided that a recommended sulfur guard is included, the proposed design is ready for full-scale implementation. ",

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Removal of sulfur contaminants from biogas to enable direct catalytic methanation. / Dannesboe, Christian; Hansen, John Bøgild; Johannsen, Ib.
In: Biomass Conversion and Biorefinery, Vol. 11, No. 5, 10.2021, p. 1823-1834.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

TY - JOUR

T1 - Removal of sulfur contaminants from biogas to enable direct catalytic methanation

AU - Dannesboe, Christian

AU - Hansen, John Bøgild

AU - Johannsen, Ib

PY - 2021/10

Y1 - 2021/10

N2 - In the near future, renewable energy sources will replace fossil energy. To allow full carbon utilization of renewable biomass, we have demonstrated a possible integration between a biogas reactor, an electrolysis unit, and a catalytic methanation reactor. Stringent removal of all sulfur contaminants in raw biogas is required to enable this integration. We demonstrate how existing bulk sulfur removal solutions, like a biotrickling filter loaded with Acidithiobacillus thiooxidans and impregnated activated carbon, are unable to meet this requirement. Only the main sulfur contaminant hydrogen sulfide (H 2S) can effectively be removed. Contaminants carbon disulfide (CS 2), dimethyl sulfide (DMS), and carbonyl sulfide (COS) will leak through the carbon filter, long before hydrogen sulfide can be detected. Utilization of surplus oxygen from the combined system is proven problem free and allows sulfur removal without introducing contaminants. Provided that a recommended sulfur guard is included, the proposed design is ready for full-scale implementation.

AB - In the near future, renewable energy sources will replace fossil energy. To allow full carbon utilization of renewable biomass, we have demonstrated a possible integration between a biogas reactor, an electrolysis unit, and a catalytic methanation reactor. Stringent removal of all sulfur contaminants in raw biogas is required to enable this integration. We demonstrate how existing bulk sulfur removal solutions, like a biotrickling filter loaded with Acidithiobacillus thiooxidans and impregnated activated carbon, are unable to meet this requirement. Only the main sulfur contaminant hydrogen sulfide (H 2S) can effectively be removed. Contaminants carbon disulfide (CS 2), dimethyl sulfide (DMS), and carbonyl sulfide (COS) will leak through the carbon filter, long before hydrogen sulfide can be detected. Utilization of surplus oxygen from the combined system is proven problem free and allows sulfur removal without introducing contaminants. Provided that a recommended sulfur guard is included, the proposed design is ready for full-scale implementation.

KW - Biogas

KW - El til gas

KW - Methanisering

KW - Svovl urenhedder

U2 - 10.1007/s13399-019-00570-7

DO - 10.1007/s13399-019-00570-7

M3 - Journal article

SN - 2190-6823

VL - 11

SP - 1823

EP - 1834

JO - Biomass Conversion and Biorefinery

JF - Biomass Conversion and Biorefinery

IS - 5

ER -

Removal of sulfur contaminants from biogas to enable direct catalytic methanation

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