A study on selective oxidation of hydrogen sulfide over zeolite-NaX and-KX catalysts

Lee, Jong Dae; Jun, Ji Eun; Park, No‐Kuk; Ryu, Si Ok; Lee, Tae-Jin

doi:10.1007/bf02701459

Cited by 32 publications

(7 citation statements)

References 13 publications

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“…The studies have focused on hydrogen sulfide adsorption on activated carbons as it relates to surface properties, surface chemistry, temperature, concentration of H 2 S gas, addition of cations, moisture of gas stream, and pH. These experiments have used both biogas from real processes and laboratory produced gases of controlled composition [9,10,11]. NaOH impregnated activated carbon was also tested for H 2 S removal capacity.…”

Section: Introductionmentioning

confidence: 99%

Application of Iron-Based Adsorbent (Feooh) to Remove Hydrogen Sulfide (H2s) From Biogas

Uan

2018

JST

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Biogas generated during the anaerobic digestion of piggery wastes is considered as one of the renewable energy sources. This biogas is methane-rich, based on a typical composition of 60 -70 % methane (CH 4 ). However, trace amounts of undesirable compounds, such as hydrogen sulfide (H 2 S) is also present, which hinder their use as it is very toxic and corrode the equipment. In this study, a lab-scale adsorption system was conducted to removal H 2 S from biogas collected at Thanh Hung pig farm (Thanh Oai district, Hanoi). The initial biogas contained high CH 4 concentration of 72 %, and the H 2 S concentration was about 1995 ppm. The iron-based adsorbent (FeOOH) with the particle size of 0.50-1.18 mm was used for H 2 S purification. The system was operated continuously at various biogas flow rates from 0.5 to 3 L/min. Breakpoint of FeOOH appeared after 1,038 min. The adsorption capacity was estimated up to 0.18 g H 2 S/g FeOOH. A longer empty bed contact time increased the amount of H 2 S that was adsorbed up until the time of breakpoint. During operation, the temperature in the air and in biogas was varied insignificantly in the range of 29 to 32 o C. However, the humidity was much different between in the ambient air (56 %) and in biogas (87 %). In conclusion, FeOOH has high capacity for H 2 S purification to produce high quality purified biogas with H 2 S concentration of below 100 ppm which could be used for electrical generation.

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Section: Introductionmentioning

confidence: 99%

Application of Iron-Based Adsorbent (Feooh) to Remove Hydrogen Sulfide (H2s) From Biogas

Uan

2018

JST

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“…Some studies about the use of zeolite-NaX and zeolite-KX as a catalyst for removing H 2 S from IGCC gas streams have been performed at Yeungnam University in Korea. One study found a yield of 86% of elemental sulfur on the zeolites over a period of 40 hours (Lee, Jun, Park, Ryu, & Lee, 2005). Gas streams from IGCC power plants are at a high temperature, between 200 and 300°C.…”

Section: Zeolites (Molecular Sieves)mentioning

confidence: 99%

A novel and cost-effective hydrogen sulfide removal technology using tire derived rubber particles

Siefers

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“…Some studies about the use of zeoliteNaX and zeolite-KX as a catalyst for removing H 2 S from IGCC gas streams have been performed at Yeungnam University in Korea. One study found a yield of 86% of elemental sulfur on the zeolites over a period of 40 hours (Lee, Jun, Park, Ryu, & Lee, 2005). Gas streams from IGCC power plants are at a high temperature, between 200 and 300°C.…”

Section: Zeolites (Molecular Sieves)mentioning

confidence: 99%

A Novel and Cost-Effective Hydrogen Sulfide Removal Technology Using Tire Derived Rubber Particles

Siefers¹,

Wang²,

Sindt³

et al. 2010

proc water environ fed

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A study on selective oxidation of hydrogen sulfide over zeolite-NaX and-KX catalysts

Cited by 32 publications

References 13 publications

Application of Iron-Based Adsorbent (Feooh) to Remove Hydrogen Sulfide (H2s) From Biogas

Application of Iron-Based Adsorbent (Feooh) to Remove Hydrogen Sulfide (H2s) From Biogas

A novel and cost-effective hydrogen sulfide removal technology using tire derived rubber particles

A Novel and Cost-Effective Hydrogen Sulfide Removal Technology Using Tire Derived Rubber Particles

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