Production and use of activated char for combined SO{sub 2}/NO{sub x} removal. [Quarterly] technical report, December 1, 1993--February 28, 1994
- Illinois State Geological Survey, Champaign, IL (United States)
- Illinois Univ., Urbana, IL (United States)
During this reporting period, a thermogravimetric technique was developed to determine the kinetics of SO{sub 2} adsorption on a series of chars prepared from IBC-102 coal. Also, a temperature programmed desorption (TPD) method was developed to determine the nature and extent of carbon-oxygen (C-O) complexes formed on the surface of the char. An attempt was made to relate this information to observed SO{sub 2} adsorption behavior. An IBC-102 char prepared with an N{sub 2}-BET surface area of 10 m{sup 2}/g adsorbed significantly less SO{sub 2} than chars prepared with surface areas > 200 m{sup 2}/g. However, for chars with surface areas > 200 m{sup 2}/g, the amount of available surface area was not as important as the chemistry of the surface. A steam activated char adsorbed the most SO{sub 2}, comparable to the amount adsorbed by a commercial activated carbon. TPD performed on the steam activated char revealed the presence of CO-forming C-O complexes which were basic in nature. The other chars all contained significant amounts of more acidic CO{sub 2}-forming complexes. Because SO{sub 2} is an acid gas, a carbon adsorbent with a basic surface should adsorb more SO{sub 2}. To enhance SO{sub 2} adsorption, a novel char preparation method was devised to 2 create a basic surface with up to ten times more CO-forming C-O complexes than formed by steam activation.
- Research Organization:
- Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FC22-92PC92521
- OSTI ID:
- 10154355
- Report Number(s):
- DOE/PC/92521--T136; ON: DE94012563; BR: AV0100000/AV0102000
- Country of Publication:
- United States
- Language:
- English
Similar Records
Production and use of activated char for combined SO{sub 2}/NO{sub x} removal. Technical report, September 1--November 30, 1993
Production and use of activated char for combined SO{sub 2}/NO{sub x} removal. [Quarterly] technical report, September 1--November 30, 1994
Related Subjects
010500
20 FOSSIL-FUELED POWER PLANTS
200202
ADSORPTION
ADSORPTION ISOTHERMS
CATALYTIC EFFECTS
CHARS
CHEMICAL ACTIVATION
COAL
EXPERIMENTAL DATA
ILLINOIS
KINETICS
NITROGEN
NITROGEN OXIDES
NOXIOUS GAS AND PARTICULATE EMISSIONS
PRODUCTS AND BY-PRODUCTS
PROGRESS REPORT
PYROLYSIS
SORPTIVE PROPERTIES
SULFUR DIOXIDE
SURFACE AREA
THERMAL GRAVIMETRIC ANALYSIS