Document Detail

Novel aqueous foams for suppressing VOC emission.
MedLine Citation:
PMID:  15180071     Owner:  NLM     Status:  MEDLINE    
Reducing volatile organic compound (VOC) emissions from crude oil/gasoline distribution and storage facilities is important in controlling environmental pollution and enhancing workplace safety. Stable aqueous foam formulations are developed to provide a mass transfer barrier to the emission of VOCs during loading of gasoline. Experiments are carried out in a bench-scale foam cell using liquid hexane as oil. The foam columns of 32 cm in height were able to suppress the plateau concentration of hexane vapors in the effluent by 87% under experimental conditions tested. Vapor suppression increased with foam height but was almost insensitive to liquid viscosity. These experiments are then upscaled from bench-scale to a vessel having an exposed surface area of roughly 2 orders of magnitude higher. Gasoline is used as oil in the upscaled experiments, and the concentrations of volatile hydrocarbons in the effluent are measured during oil loading. A 40-cm-thick foam column is found to reduce the emissions by 96% for foams prepared with deionized water and by 93.8% for foams prepared with 3.5 wt % NaCl brine for 10 h of oil loading.
Pankaj S Gautam; Kishore K Mohanty
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Environmental science & technology     Volume:  38     ISSN:  0013-936X     ISO Abbreviation:  Environ. Sci. Technol.     Publication Date:  2004 May 
Date Detail:
Created Date:  2004-06-07     Completed Date:  2004-08-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0213155     Medline TA:  Environ Sci Technol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2721-8     Citation Subset:  IM    
Chemical Engineering Department, University of Houston, 4800 Calhoun Road, Houston, Texas 77204-4004, USA.
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MeSH Terms
Air Pollutants*
Air Pollution / prevention & control*
Models, Theoretical*
Organic Chemicals
Reg. No./Substance:
0/Air Pollutants; 0/Gasoline; 0/Organic Chemicals; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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