Study on iron-based adsorbents for alternating removal of H2S and O2 from natural gas and biogas

Raabe, Toni; Mehne, Marcel; Rasser, Heidi; Krause, Hartmut; Kureti, Sven

doi:10.1016/j.cej.2019.04.103

Cited by 39 publications

(18 citation statements)

References 26 publications

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“…Amorphous iron hydroxide has the best desulfurization properties among the tested sorbents. This is in accordance with Raabe et al., who performed lab‐scale tests in powder bed reactors . No consumable chemicals are required during operation.…”

Section: Resultssupporting

confidence: 90%

“…In the displayed case, residual oxygen in the system would presumably be consumed by the reactions given in Eqs. (2) or (4) , .…”

Section: Introductionmentioning

confidence: 99%

“…According to Raabe et al. , amorphous iron hydroxide species are favorable for biogas desulfurization due to the high proportion of meso‐ and micropores, small average pore diameter, and low crystallinity.…”

Section: Introductionmentioning

confidence: 99%

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Chemoadsorption for Separation of Hydrogen Sulfide from Biogas with Iron Hydroxide and Sulfur Recovery

et al. 2020

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Hydrogen sulfide (H 2 S) removal from biogas is essential to allow biogas storage in the natural gas grid. Several established methods exist, most of them making use of non-reusable substrates such as iron sponge or active carbon. Coated metallic foams provide a reusable sustainable alternative. Several iron oxides and hydroxides were tested to validate the H 2 S adsorption properties before and after thermal regeneration, i.e., sulfur removal. Amorphous iron hydroxide proved to efficiently clean biogas after maximum four sulfur removal cycles and showed an almost ten times larger capacity for sulfur adsorption than crystalline hematite Fe 2 O 3. Very low H 2 S contents could be realized until breakthrough.

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Section: Resultssupporting

confidence: 90%

“…In the displayed case, residual oxygen in the system would presumably be consumed by the reactions given in Eqs. (2) or (4) , .…”

Section: Introductionmentioning

confidence: 99%

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Chemoadsorption for Separation of Hydrogen Sulfide from Biogas with Iron Hydroxide and Sulfur Recovery

et al. 2020

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“…In general, the H 2 S removal-methods can be classified as: physical using solubility in water and sorbents [11,12], chemical based on chemical reactions [2,13,14] and biological using microorganisms [15][16][17] or a combination of these [18,19]. As all the methods have advantages and disadvantages, new and improved solutions are investigated.…”

Section: Introductionmentioning

confidence: 99%

Oxidization of hydrogen sulfide in biogas by manganese (IV) oxide particles

Konkol

Cebula

Cenian

2020

Environmental Engineering Research

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Hydrogen sulphide is corrosive to most metallic equipment such as pipelines, compressors, gas storage tanks, engines, turbines and other units. It acts as a strong poison for fuel cells and its combustion leads to SO2 emissions. Due to the problems associated with hydrogen sulphide, it is critical to remove it from biogas before further processing. The removal of hydrogen sulphide from biogas using MnO2, which acts as a sorbent and catalyst, was investigated. The research was conducted in a full-scale agriculture biogas plant using chicken manure and maize silage as substrate. The manganese dioxide (manganese (IV) oxide) was derived from the waste products of a water conditioning system, after manganese removal from drinking water. The obtained results showed significantly better adsorption of hydrogen sulphide and faster regeneration of the bed compared to the bed filled with hydrated iron oxides. The H2S concentration in the treated biogas dropped from about 1,650 to 0-5 ppm.

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“…Hydrogen sulfide (H 2 S) is an acid gas and can be found in different environments: air, surface water, underground water, soil, sediments and fossil reserves (e.g. charcoal, natural gas, petrol) [1][2][3]. H 2 S emission is mostly due to natural processes but also to anthropogenic sources such as wastewater treatment plants (WWTP), food industry, paper mills, tanneries, petroleum refineries, wastes' incinerators, power plants, landfill sites etc.…”

Section: Introductionmentioning

confidence: 99%

Valorization of calcium carbonate-based solid wastes for the treatment of hydrogen sulfide in a semi-continuous reactor: Part II – Slurry bubble column pilot

Martı́nez

Minh

Nzihou

et al. 2020

Chemical Engineering Journal

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Study on iron-based adsorbents for alternating removal of H2S and O2 from natural gas and biogas

Cited by 39 publications

References 26 publications

Chemoadsorption for Separation of Hydrogen Sulfide from Biogas with Iron Hydroxide and Sulfur Recovery

Chemoadsorption for Separation of Hydrogen Sulfide from Biogas with Iron Hydroxide and Sulfur Recovery

Oxidization of hydrogen sulfide in biogas by manganese (IV) oxide particles

Valorization of calcium carbonate-based solid wastes for the treatment of hydrogen sulfide in a semi-continuous reactor: Part II – Slurry bubble column pilot

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