Title: Remediation of groundwater contaminated with BAM and Atrazine using active charcoal 
Resource Type: document --> technical publication --> report 
Country: Denmark 
Language(s): Danish
English
 
Year: 2003 
Availability: Environmental project, Miljørapport nr. 859 
Author 1/Producer: Clausen, L. 
Other Authors/Producers: Kragstrup, T.;Christensen, T.J,: Corfitzen, C.; Albrechtsen, H-J. and Arvin, E 
Author / Producer Type: Agency, regulator or other governmental or inter-governmental body 
Publisher: The Danish Environmental Protection Agency, Miljøstyrelsen 
Publisher City: Strandgade 29, DK-1405 Copenhagen K, Denmark 
ISBN: 87-7972-980-0 
Report / download web link (=direct link): http://www2.mst.dk/common/Udgivramme/Frame.asp?pg=http://www ...  
Format (e.g. PDF): PDF 
Size: (e.g. 20mb) 2.4 
EUGRIS Keyword(s): Contaminated land-->Contaminated land overview
Contaminated land-->Remediation options-->Remediation options overview
 
Short description: Removal the pesticides BAM (2,6-Dichlorobenzamide) and Atrazine from Danish groundwater using activated carbon (AC) filtration has been studied. The AC capacity for adsorption is of a similar order of magnitude for both BAM and Atrazin and no significant difference was noted for different types of activated carbon 
Long description: The AC capacity, which is an expression of the amount of pesticide bound to a given amount of AC without change in the outlet concentration above a specified value, was investigated for three different types of activated carbon based on bitumen, peat and coconut. Bench scale studies (near-realistic scale -one meter scale) used polluted groundwater from respectively a limestone and a glacial sand aquifer with relatively low amounts of natural organic matter. The capacity in bench scale experiments was 48-57 ìg BAM/g AC and 43-66 ìg atrazine/g AC with influent concentrations of BAM and Atrazine of 0.27 ìg/l and 0.21 ìg/l respectively and an influent concentration of NVOC of 1.1 mg/L. Iron precipitation in the upper 2 cm of the adsorber was observed and it suggested that design of carbon filter should allow manually removal of the upper layer of activated carbon avoiding problems with back wash. AC capacities determined by adsorption isotherm tests were significantly 2 – 4 times higher than those determined by realistic bench-scale experiments. In the adsorption isotherm tests, it could be demonstrated that a natural organic matter concentration of 1-2 mg NVOC/L could produce a significant reduction in capacity compared with manufacturer’s data. 
Submitted By: Dr Jacqueline Falkenberg WhoDoesWhat?      Last update: 13/04/2007