Adsorption of SO{sub 2} on bituminous coal char and activated carbon fibers prepared from phenol formaldehyde
- Illinois State Geological Survey, Champaign, IL (United States)
- Univ. of Illinois, Urbana, IL (United States)
Carbon-based materials are used commercially to remove SO{sub 2} from coal combustion flue gases. Historically, these materials have consisted of granular activated carbons prepared from bituminous coal. Recent studies have reported that activated carbon fibers may have potential in this application due to their relatively high SO{sub 2} adsorption capacity and low pressure drop in a fixed or moving bed system. In this study, activated carbons produced from Illinois coal had SO{sub 2} adsorption capacities comparable to those of the best available commercial activated carbons. Activated carbon fibers (ACFs) commercially prepared by Nippon Kynol with surface areas ranging from 600 to 1900 m{sup 2}/g were also studied. Adsorption of SO{sub 2} on the series of ACFs was inversely proportional to N{sub 2} BET surface area. Higher surface area ACFs had wider pores and adsorbed less SO{sub 2}, thus, pore size distribution is thought to play a significant role in SO{sub 2} adsorption for these materials. Activated carbon fibers with pore size and surface chemistry tailored for SO{sub 2} adsorption showed enhanced capacities. Further understanding of the relationships of pore size and surface chemistry for adsorption of SO{sub 2} may lead to the development of more efficient adsorbents prepared from either coal or activated carbon fibers.
- OSTI ID:
- 370354
- Report Number(s):
- CONF-960376-; TRN: 96:003805-0406
- Resource Relation:
- Conference: Spring national meeting of the American Chemical Society (ACS), New Orleans, LA (United States), 24-28 Mar 1996; Other Information: PBD: 1996; Related Information: Is Part Of 211th ACS national meeting; PB: 2284 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Activated carbon fibers - past, present and future
Approaches to mitigate the impact of dissolved organic matter on the adsorption of synthetic organic contaminants by porous carbonaceous sorbents