Vertical barriers with increased sorption capacities [electronic resource].
- Published:
- Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1997.
- Physical Description:
- pages 645-651 : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- Vertical barriers are commonly used for the containment of contaminated areas. Due to the very small permeability of the barrier material which is usually in the order of magnitude of 10-10 m/s or less the advective contaminant transport can be more or less neglected. Nevertheless, there will always be a diffusive contaminant transport through the barrier which is caused by the concentration gradient. Investigations have been made to increase the sorption capacity of the barrier material by adding substances such as organoclays, zeolites, inorganic oxides and fly ashes. The contaminants taken into account where heavy metals (Pb) and for organic contaminants Toluole and Phenantrene. The paper presents results of model calculations and experiments. As a result, barrier materials can be designed {open_quotes}tailor-made{close_quotes} depending on the individual contaminant range of each site (e.g. landfills, gasworks etc.). The parameters relevant for construction such as rheological properties, compressive strength and permeability are not affected by the addition of the sorbents.
- Report Numbers:
- E 1.99:conf-970208--proc.
conf-970208--proc. - Subject(s):
- Other Subject(s):
- Note:
- Published through SciTech Connect.
12/31/1997.
"conf-970208--proc."
"DE98001967"
International containment technology conference and exhibition, St. Petersburg, FL (United States), 9-12 Feb 1997.
Bradl, H.B.
USDOE, Washington, DC (United States)
View MARC record | catkey: 14137944