Deep removal of sulfur and trace organic compounds from biogas to protect a catalytic methanation reactor

Calbry-Muzyka, Adelaide; Gantenbein, Andreas; Schneebeli, Jörg; Frei, A.; Knorpp, Amy J.; Schildhauer, Tilman J.; Biollaz, Serge M.A.

doi:10.1016/j.cej.2018.12.012

Cited by 54 publications

(38 citation statements)

References 32 publications

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“…This is above the accepted sulfur level recommended for methanation catalyst [46][47][48] and clearly specifies the need for a sulfur guard before the methanation reactor. A similar pilot study (COSYMA) also observed DMS as the first sulfur species to break through the carbon adsorbent [56]. As H 2 S cannot be detected in any of the samples, clearly a continuous analysis of the most predominant sulfur species, H 2 S, is insufficient when evaluating carbon capacity.…”

Section: Performance Of the Carbon Filtermentioning

confidence: 89%

“…This has been demonstrated as an effective way to remove chemisorbed H 2 S from nickel [50,51]. Although H 2 S is the dominant sulfur compound in biogas, several other sulfur compounds like COS, DMS, CS 2 , and thiophene also contribute to sulfur poisoning of Ni/Al 3 O 2 catalysts [53][54][55][56]. The study by Czekaj et al [54] finds COS to bind strongly to the catalyst support rather than nickel.…”

Section: Requirements For the Catalytic Methanation Reactormentioning

confidence: 99%

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Removal of sulfur contaminants from biogas to enable direct catalytic methanation

Dannesboe¹,

Hansen²,

Johannsen³

2019

Biomass Conv. Bioref.

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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 2 S) 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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Section: Performance Of the Carbon Filtermentioning

confidence: 89%

Section: Requirements For the Catalytic Methanation Reactormentioning

confidence: 99%

Removal of sulfur contaminants from biogas to enable direct catalytic methanation

Dannesboe¹,

Hansen²,

Johannsen³

2019

Biomass Conv. Bioref.

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“…The most common VSCs are methanethiol, ethanethiol, dimethyl sulfide and dimethyl disulfide (Calbry-Muzyka et al, 2019). Emissions of VSCs usually relate to the anaerobic treatment of sulfur-rich substrates such as sulfolipids or amino acids (methionine, cysteine, and their derivates) (Andersson et al, 2004;Visscher, 1996).…”

Section: Process Controlmentioning

confidence: 99%

Biological H₂S removal from gases

Andreides¹,

Pokorná-Krayzelová²,

Bartáček³

et al. 2020

Environmental Technologies to Treat Sulphur Pollution: Principles and Engineering

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Hydrogen sulfide (H 2 S) is an odorous and poisonous gas present in biogas (the main product of anaerobic digestion), in sour gas (i.e. natural gas with a high content of H 2 S) or in general in the gases coming as a concomitant with crude oil extraction. H 2 S can also be produced abiotically, e.g. through the reaction of anhydrite and hydrocarbons as reported in deep carbonate gas reservoirs (Worden & Smalley, 1996). In environmental engineering applications, H 2 S is most often generated during anaerobic fermentation of substrates containing sulfur compounds. Sulfate-reducing bacteria (SRB) with a respiratory metabolism use sulfate as an electron acceptor while producing sulfide, which is toxic both in its liquid as well as in its gaseous form. Gaseous hydrogen sulfide causes the corrosion of concrete and steel digesters (see Chapter 5) and other equipment such as pipes, burners and combined heat and power (CHP) units, which increases the operational costs since the engine oil is acidified and its replacement interval is significantly shortened. While burning, the acid rain precursors SO 2 and SO 3 are emitted to the environment. Last but not the least, gaseous hydrogen sulfide is extremely toxic and causes health risks for the operators of fermenters and sewer maintainers. The olfactory nerve responding to the smell of hydrogen sulfide is paralyzed after a few inhalations of 100-150 ppm,

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“…A mixture of biogas slurry from waste water and biowaste digester was used to test the performance of catalytic methanation reactor. Using this removal of hydrogen sulfide gas was tested by a gas adsorption method [15]. There is a need for upgrading of biogas technology as the challenges faced in the sector are in terms of energy consumption and operating costs.…”

Section: A Brief Literature Reviewmentioning

confidence: 99%

A Retrospection on Current Trends in Biogas Purification

Patil*¹,

Barjibhe²,

Chopade³

et al. 2019

IJITEE

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As the non-renewable resources are depleting at a lighting speed there will be crisis for requirement of energy in near future. The only alternative is to go for renewable resources. It has been proven that biogas and gasoline can be used with association to reduce the energy demand. As even though electric vehicles are booming in the market, it will take more than a decade to move towards electric world, especially in India. The reason behind that is, the raw material required to make batteries is not at all available with India, so the only option is to export, which imposes additional cost on the country's financial books. And also the tendency of common Indian pupils to shift from IC engine to electric vehicles will incur a high debt. So to reduce the dependency on electric vehicle and also to reduce cost, biogas in the form of compressed natural gas is the only way to come in near future. The motivation of this review work is to produce biogas from food wastes, to purify and store in cylinder used to run vehicles and to analyze the effect of performance and emission characteristics of an engine

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Deep removal of sulfur and trace organic compounds from biogas to protect a catalytic methanation reactor

Cited by 54 publications

References 32 publications

Removal of sulfur contaminants from biogas to enable direct catalytic methanation

Removal of sulfur contaminants from biogas to enable direct catalytic methanation

Biological H₂S removal from gases

A Retrospection on Current Trends in Biogas Purification

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Deep removal of sulfur and trace organic compounds from biogas to protect a catalytic methanation reactor

Cited by 54 publications

References 32 publications

Removal of sulfur contaminants from biogas to enable direct catalytic methanation

Removal of sulfur contaminants from biogas to enable direct catalytic methanation

Biological H2S removal from gases

A Retrospection on Current Trends in Biogas Purification

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Product

Resources

About

Biological H₂S removal from gases