Dimethyl sulfide adsorption from natural gas for solid oxide fuel cell applications

Barelli, Linda; Bidini, Gianni; Desideri, Umberto; Discepoli, Gabriele; Sisani, Elena

doi:10.1016/j.fuproc.2015.08.012

Cited by 16 publications

(3 citation statements)

References 42 publications

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“…Activated carbon is commonly used in adsorption due to its high surface area, microporosity, thermal stability, high removal capacity, and low cost per unit volume of adsorber compared with the other mesoporous material, such as zeolite, metal-organic, porous silica, and clay incandescent. In addition, its surface property, i.e., pore volume, surface area, and chemistry, determines the overall adsorption performance, and its capability in pollutant treatment was proven by the previous study on Nitrogen Oxide (NO), H 2 S, and volatile organic compounds [20–23].…”

Section: Introductionmentioning

confidence: 99%

Removal of hydrogen sulfide from a biogas mimic by using impregnated activated carbon adsorbent

et al. 2019

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Adsorption technology has led to the development of promising techniques to purify biogas, i.e., biomethane or biohydrogen. Such techniques mainly depend on the adsorbent ability and operating parameters. This research focused on adsorption technology for upgrading biogas technique by developing a novel adsorbent. The commercial coconut shell activated carbon (CAC) and two types of gases (H 2 S/N 2 and H 2 S/N 2 /CO 2 ) were used. CAC was modified by copper sulfate (CuSO 4 ), zinc acetate (ZnAc 2 ), potassium hydroxide (KOH), potassium iodide (KI), and sodium carbonate (Na 2 CO 3 ) on their surface to increase the selectivity of H 2 S removal. Commercial H 2 S adsorbents were soaked in 7 wt.% of impregnated solution for 30 min before drying at 120°C for 24 h. The synthesized adsorbent’s physical and chemical properties, including surface morphology, porosity, and structures, were characterized by SEM-EDX, FTIR, XRD, TGA, and BET analyses. For real applications, the modified adsorbents were used in a real-time 0.85 L single-column adsorber unit. The operating parameters for the H 2 S adsorption in the adsorber unit varied in L/D ratio (0.5–2.5) and feed flow rate (1.5–5.5 L/min) where, also equivalent with a gas hourly space velocity, GHSV (212.4–780.0 hour -1 ) used. The performances of H 2 S adsorption were then compared with those of the best adsorbent that can be used for further investigation. Characterization results revealed that the impregnated solution homogeneously covered the adsorbent surface, morphology, and properties (i.e., crystallinity and surface area). BET analysis further shows that the modified adsorbents surface area decreased by up to 96%. Hence, ZnAc 2 –CAC clarify as the best adsorption capacity ranging within 1.3–1.7 mg H 2 S/g, whereby the studied extended to adsorption-desorption cycle.

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Section: Introductionmentioning

confidence: 99%

Removal of hydrogen sulfide from a biogas mimic by using impregnated activated carbon adsorbent

et al. 2019

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“…The sulfur compounds dimethyl sulfide (DMS), carbonyl sulfide (COS), and carbon disulfide (CS 2 ) are particularly difficult to remove using ambient temperature sorbents (Dannesboe et al, 2019). Activated carbons incorporating transition metals such as iron (Fe) (de Aguiar et al, 2017) or copper (Cu) (Barelli et al, 2015) can be effective for this, as can certain zeolites if the biogas is maintained relatively dry (Calbry-Muzyka et al, 2019a).…”

Section: Technical Solutionsmentioning

confidence: 99%

Direct Methanation of Biogas—Technical Challenges and Recent Progress

Calbry-Muzyka

Schildhauer

2020

Front. Energy Res.

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The direct methanation of biogas using hydrogen from electrolysis is a promising pathway for seasonal storage of renewables in the natural gas network. It offers particular advantages over the methanation of carbon dioxide separated from biogas, as it eliminates a costly and unnecessary carbon dioxide separation step. The key implementation challenges facing direct methanation of biogas are reviewed here: 1) treatment of biogas impurities; 2) competing reactor concepts for methanation; and 3) competing process concepts for final upgrading. For each of these three aspects, the state of the art is reviewed, focusing especially on results which have been validated at a high Technology Readiness Level (TRL) at recent long-duration demonstrations. The different technology solutions have advantages and disadvantages which may fit best to different technical and economic boundary conditions, which are discussed. As a final outlook, TRL 8 demo plants will be necessary to show the full potential of these systems, and to obtain consistent operation data to allow a cost comparison.

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“…Sulfur compounds, in addition to tars, are another barrier to a stable, long-term, and high-performance SOFC operation. Hydrogen sulfide (H 2 S), an inorganic sulfur molecule, and other organic sulfur components such as mercaptans and thiophenes could instantly deactivate the electrochemical activity of SOFCs at concentrations of several ppm [ [39] , [40] , [41] , [42] ]. Syngas from the gasification of biomass contains both, inorganic and organic sulfur components at significant levels [ 43 ].…”

Section: Introductionmentioning

confidence: 99%

In-situ electrochemical impedance analysis of a commercial SOFC stack fueled by real wood gas

Torrigino,

Grimm,

Karl

et al. 2024

Heliyon

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Dimethyl sulfide adsorption from natural gas for solid oxide fuel cell applications

Cited by 16 publications

References 42 publications

Removal of hydrogen sulfide from a biogas mimic by using impregnated activated carbon adsorbent

Removal of hydrogen sulfide from a biogas mimic by using impregnated activated carbon adsorbent

Direct Methanation of Biogas—Technical Challenges and Recent Progress

In-situ electrochemical impedance analysis of a commercial SOFC stack fueled by real wood gas

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