New apparatus for measuring radon adsorption on solid adsorbents

Journal Article · Sun Sep 01 00:00:00 EDT 1991 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00057a024· OSTI ID:5760056

Hassan, N M; Hines, A L ^[1]; Ghosh, T K; Loyalka, S K ^[2]; Ketring, A R ^[3]

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1. Missouri Univ., Columbia, MO (United States). Dept. of Chemical Engineering
2. Missouri Univ., Columbia, MO (United States). Dept. of Nuclear Engineering
3. Missouri Univ., Columbia, MO (United States). Research Reactor Facility

A new experimental system was designed to measure radon uptake by solid adsorbents from air or other carrier gases/vapors. The total amount of radon adsorbed corresponding to a specific gas-phase concentration was determined by simultaneously measuring the solid-phase and gas-phase concentrations. The system was used to measure radon adsorption isotherms on BPL activated carbon at 288, 298, and 308 K and on silica gel and molecular sieve 13X at 298 K. The isotherms were of type III according to Brunauer's classification. The heat of adsorption data indicated that the BPL activated carbon provided a heterogeneous surface for radon adsorption. The equilibrium data were correlated by the Freundlich equation. In this paper the possible adsorption mechanism and the use of the adsorption isotherms to measure indoor radon concentrations are discussed.

• OSTI ID: 5760056
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 30:9; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
47 OTHER INSTRUMENTATION
EQUIPMENT
DESIGN
RADON
ADSORPTION ISOTHERMS
ACTIVATION ENERGY
ADSORPTION
ADSORPTION HEAT
AIR
CARBON
CONCENTRATION RATIO
DATA
EQUILIBRIUM
GASES
MOLECULAR SIEVES
SILICA GEL
SOLIDS
TEMPERATURE RANGE 0273-0400 K
VAPORS
ADSORBENTS
ELEMENTS
ENERGY
ENTHALPY
FLUIDS
INFORMATION
ISOTHERMS
NONMETALS
PHYSICAL PROPERTIES
RARE GASES
SORPTION
TEMPERATURE RANGE
THERMODYNAMIC PROPERTIES
440100* - Radiation Instrumentation
440600 - Optical Instrumentation- (1990-)