Effects of weathering on impregnated charcoal performance

Technical Report · Sat Oct 01 04:00:00 EDT 1977

OSTI ID:5031109

Deitz, V R

Commercial activated charcoals have been exposed to known contaminants under controlled laboratory conditions and also to large volumes of outdoor air and each sample then evaluated for methyl iodide penetration. There is strong evidence that the interaction of water vapor and the charcoal is a significant factor in the degradation of the charcoals when the relative humidity is 70% and greater. The laboratory air mixtures studied were water vapor, water vapor and sulfur dioxide, water vapor and ozone, and water vapor and carbon monoxide. The charcoal in each of the four 0.5-in. layers making up the 2-in. test bed was degraded by the contaminants, but the first layer was influenced most. For the same charcoal the cumulative effect during one, two, and three months of weathering with outdoor air led to a progressive increase in methyl iodide penetration. The experimentation is being extended to additional commercial charcoals and to additional contaminant species in the laboratory experiments.

• Research Organization: Naval Research Lab., Washington, D.C. (USA)
• OSTI ID: 5031109
• Report Number(s): NUREG/CR-0025
• Country of Publication: United States
• Language: English

Related Subjects

052001* -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ACTIVATED CARBON
ADSORBENTS
ADSORPTION
CARBON
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHARCOAL
EFFICIENCY
ELEMENTS
FLUIDS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
IODINATED ALIPHATIC HYDROCARBONS
METHYL IODIDE
NONMETALS
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
OFF-GAS SYSTEMS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC IODINE COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
OZONE
POWER PLANTS
SORPTION
SORPTIVE PROPERTIES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SURFACE PROPERTIES
THERMAL POWER PLANTS
VAPORS
WATER VAPOR
WEATHERING