| Title: |
Remediation of groundwater contaminated with BAM and Atrazine using active charcoal
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| Resource Type: |
document --> technical publication --> report
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| Country: |
Denmark
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| Language(s): |
Danish
English
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| Year: |
2003 |
| Availability: |
Environmental project, Miljørapport nr. 859
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| Author 1/Producer: |
Clausen, L.
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| Other Authors/Producers: |
Kragstrup, T.;Christensen, T.J,: Corfitzen, C.; Albrechtsen, H-J. and Arvin, E
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| Author / Producer Type: |
Agency, regulator or other governmental or inter-governmental body
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| Publisher: |
The Danish Environmental Protection Agency, Miljøstyrelsen
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| Publisher City: |
Strandgade 29, DK-1405 Copenhagen K, Denmark
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| ISBN: |
87-7972-980-0
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| Format (e.g. PDF): |
PDF
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| Size: (e.g. 20mb) |
2.4
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EUGRIS Keyword(s): |
Contaminated land-->Contaminated land overview
Contaminated land-->Remediation options-->Remediation options overview
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| 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
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| 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.
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Submitted By:
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Dr Jacqueline Falkenberg WhoDoesWhat?
Last update: 13/04/2007
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