TITLE

A REVIEW OF SOLID CARBON REACTIVE MEDIA FOR ENHANCED SUBSURFACE DENITRIFICATION IN A PERMEABLE REACTIVE BARRIER ON IRISH FARMS

AUTHOR(S)
Fenton, Owen
PUB. DATE
January 2008
SOURCE
Journal of Environmental Hydrology;2008, Vol. 16, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Contamination of groundwater resources by a variety of anthropogenic pollutants from both point and non-point sources represents a key global environmental problem. In soil, organic carbon is needed as an energy source for heterotrophic denitrification but the potential for denitrification is limited due to carbon availability beneath the water table in the saturated zone. Research has suggested that groundwater denitrification is limited due to low organic C contents of sub-soils and aquifer media. In-situ treatment systems such as subsurface permeable reactive barriers, comprising a treatment zone of non hazardous carbon reactive materials that degrade or immobilize contaminants such as nitrates, as groundwater flows through, may be used to attenuate the movement of nutrients in agricultural settings. Some available solid carbon materials may cause clogging with subsequent bypass flow of groundwater contaminants around or through the barrier due to low hydraulic conductivity. A number of potentially suitable carbonaceous materials are identified for permeable reactive barriers in Ireland.
ACCESSION #
36182233

 

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