Document Detail


The effects of aging on the dynamic adsorption of hazardous organic vapors on impregnated activated carbon.
MedLine Citation:
PMID:  25192468     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Abstract The effects of an eight-year natural aging of ASC impregnated activated carbon on the adsorption capacity and breakthrough times of model organic vapors and of the nerve agent sarin were investigated. Aging delayed methanol breakthrough from dry air on pre-dried carbon, but shortened the breakthrough time of both methanol and hexane under relative humidity (RH) of 30-85% on pre-humidified carbon. Aging also shortened the breakthrough time of the less volatile model compound 2-methoxyethanol, especially under RH of 60-85%. Aging significantly reduced the protection capacity against sarin at RH of 85%. The effects of aging on physisorption are attributed to enhanced hydrogen-bonding capability and strength of the interaction between water and adsorption sites on the carbon surface.
Authors:
Tal Amitay-Rosen; Amir Leibman; Ido Nir; Amalia Zaltsman; Doron Kaplan
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-9-5
Journal Detail:
Title:  Journal of occupational and environmental hygiene     Volume:  -     ISSN:  1545-9632     ISO Abbreviation:  J Occup Environ Hyg     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-9-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101189458     Medline TA:  J Occup Environ Hyg     Country:  -    
Other Details:
Languages:  ENG     Pagination:  0     Citation Subset:  -    
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