pH of activated carbon surface as an indication of its suitability for H2S removal from moist air streams
Source abstract
Abstract
Abstract Samples of activated carbons of different origins were tested as removers of hydrogen sulfide at room temperature. The breakthrough capacity was evaluated using a lab designed test. The surface properties of the carbons were studied using Boehm titration, nitrogen sorption and thermal analysis. The results obtained indicate that the choice of unimpregnated carbon for hydrogen sulfide removal should be based on the parameters describing surface acidity such as pH, number of acidic groups, or weight loss during thermal treatment associated with the presence of acidic functional groups. There are certain threshold ranges of these quantities which, when exceeded, have a dramatic effect on the H 2 S breakthrough capacity.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Industrial Gas Emission Control · Catalytic Processes in Materials Science · Carbon Dioxide Capture Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (37)
Show source-provided references
1. Bansal · 1988
2. Manahan · 1994
3. 1980
4. Puri · 1970 · 6 · 191
5. Activated carbon systems for removal of light gases10.1111/j.1749-6632.1992.tb26043.x ↗
6. Activated carbon for air purification in New York City’s sewage treatment plants10.2166/wst.1993.0542 ↗
7. Catalytic oxidation of hydrogen sulfide on activated carbons10.1016/0016-2361(84)90189-3 ↗
8. Unmodified versus caustic-impregnated carbons for control of hydrogen sulfide emissions from sewage plants10.1021/es9813212 ↗
9. Adsorption/oxidation of hydrogen sulfide on nitrogen containing activated carbons10.1021/la990926o ↗
10. Effect of surface characteristics of wood-based activated carbons on adsorption of hydrogen sulfide10.1006/jcis.1999.6200 ↗
11. Effect of pH and surface chemistry on the mechanism of H2S removal by activated carbons10.1006/jcis.1999.6335 ↗
12. Analysis of the relationship between H2S removal capacity and surface properties of unimpregnated activated carbons10.1021/es990341g ↗
13. Effect of surface chemistry on the performance of unimpregnated activated carbons as H2S adsorbents
14. The role of sulfur trapped in micropores in the catalytic partial oxidation of hydrogen sulphide with oxygen10.1016/0021-9517(74)90177-8 ↗
15. The mechanism of the catalytic oxidation of hydrogen sulphide. II. Kinetics and mechanism of hydrogen sulphide oxidation catalyzed by sulfur10.1016/0021-9517(76)90094-4 ↗
16. Catalytic oxidation of hydrogen sulphide. Influence of pore structure and chemical composition of various porous substances10.1021/i360061a006 ↗
17. Oxidation of low concentrations of hydrogen sulfide over activated carbon10.1002/cjce.5450580111 ↗
18. Kinetics and reaction mechanism of hydrogen sulfide oxidation over activated carbon in the temperature range of 125–200°C10.1002/cjce.5450640613 ↗
19. Kinetics and reaction mechanism of catalytic oxidation of low concentration of hydrogen sulfide in natural gas over activated carbon10.1002/cjce.5450760507 ↗
20. Catalytic properties of activated carbons. I. Gas-phase oxidation of hydrogen sulphide10.1016/S0008-6223(97)00104-8 ↗
21. Oxidation of low concentrations hydrogen sulfide by air on a fixed activated carbon bed10.1002/cjce.5450610210 ↗
22. Studies of the oxidation mechanism of sulphur-containing gases on wet activated carbon fiber10.1016/0926-3373(95)00021-6 ↗
23. Adsorption reaction processes for the removal of hydrogen sulphide from gas steams10.1002/(SICI)1097-4660(199704)68:4<411::AID-JCTB644>3.0.CO;2-9 ↗
24. Hydrogen sulphide emission control by combined adsorption and catalytic combustion10.1016/S0920-5861(98)00174-6 ↗
25. The effect of water in the low-temperature catalytic oxidation of hydrogen sulfide to sulfur over activated carbon10.1016/S0926-860X(98)00178-1 ↗
26. Chemical identification of surface groups
27. Pore size distribution analysis of microporous carbons: a density functional theory approach10.1021/j100120a035 ↗
28. Modeling physical adsorption on porous and nonporous solids using density functional theory10.1007/BF00486565 ↗
29. Porous structure and adsorption properties of active carbons
30. Initial heats of H2S adsorption on activated carbons: effect of surface features10.1006/jcis.1999.6485 ↗
31. Carbon: electrochemical and physicochemical properties
32. Carbon materials in catalysis
33. The thermodynamics and kinetics of the hydrogen sulfide system in natural waters10.1016/0304-4203(86)90003-4 ↗
34. Wood-based activated carbons as adsorbents of hydrogen sulfide: A study of adsorption and water regeneration process10.1021/ie0004139 ↗
35. Study of H2S adsorption and water regeneration of spent coconut-based activated carbon10.1021/es001150c ↗
36. 1986
37. Cluster mediated filling of water and alcohol on microporous carbon alloys