Record Display for the EPA National Library Catalog

RECORD NUMBER: 5 OF 6

OLS Field Name OLS Field Data
Main Title Treatment of Heavy Metals Using an Organic Sulfate Reducing PRB.
Author Ludwig, R. ; Mountjoy, K. ; McGregor, R. ; Blowes, D. ;
CORP Author National Risk Management Research Lab., Ada, OK. ;Waterloo Univ. (Ontario). ;Conor Pacific Environmental Technologies, Vancouver (British Columbia).
Publisher 2000
Year Published 2000
Report Number EPA/600/A-00/072;
Stock Number PB2001-100355
Additional Subjects Ground water ; Water quality ; Water pollution control ; Monitoring ; Composts ; Organic carbon ; Attenuation ; Chemical reactions ; Performance evaluation ; Metal sulfides ; Heavy metals ; Pilot-scale walls ; Dissolved metals ; Microbially mediated sulfate-reduction ; Vancouver(Canada)
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=P100TDV4.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB2001-100355 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 02/27/2001
Collation 12p
Abstract
A pilot-scale permeable reactive wall consisting of a leaf-rich compost-pea gravel mixture was installed at a site in the Vancouver area, Canada to evaluate its potential use for treatment of a large dissolved heavy metal plume. The compost based permeable reactive wall promotes microbially-mediated sulfate reducing conditions such that dissolved metals are precipitated out as metal sulfides. The pilot-scale wall, measuring 10 m in length, 5.9 m in depth, and 2-2.5 m in width, has demonstrated good effectiveness in removing dissolved copper, cadmium, zinc, and nickel from ground water at the site over a 21-month period since installation. Performance has been particularly strong within the lower half of the wall where tidal influences are more limited and sulfate-reducing conditions are more easily maintained. Dissolved copper concentrations decrease from concentrations of over 4500 ppb in the influent ground water to less than 10 ppb, within the lower half of the wall. Zinc, cadmium, and nickel concentrations decrease from average concentrations of over 2300 ppb, 15 ppb, and 115 ppb, respectively to concentrations of less than 30 ppb, 0.2 ppb, and 10 ppb, respectively within the lower half of the wall. The activity of sulfate reducing bacteria is evidenced by a significant increase in sulfide concentrations within the wall.