The potential of using UV photolysis in an aquifer thermal energy storage system to remediate groundwater contaminated with chloro ethenes
| Autor: | N. Hartog, D.J.H. Harmsen, T.J.S. Keijzer, T. Nicolaes, E. Winters-Breur, C. H. M. Hofman-Caris, L. J. J. M. Janssen |
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| Rok vydání: | 2017 |
| Předmět: |
0208 environmental biotechnology
Groundwater remediation Aquifer 02 engineering and technology 010501 environmental sciences 01 natural sciences Vinyl chloride chemistry.chemical_compound Chemical Engineering (miscellaneous) Waste Management and Disposal 0105 earth and related environmental sciences geography geography.geographical_feature_category business.industry Process Chemistry and Technology Environmental engineering Biodegradation Contamination Pollution Aquifer thermal energy storage 020801 environmental engineering chemistry Environmental chemistry business Groundwater Thermal energy |
| Zdroj: | Journal of Environmental Chemical Engineering. 5:2921-2929 |
| ISSN: | 2213-3437 |
| DOI: | 10.1016/j.jece.2017.05.035 |
| Popis: | In several places in The Netherlands, industrial areas are redeveloped into residential areas with sustainable heating systems based on aquifer thermal energy storages (ATES). At these sites, groundwater is contaminated with chlorinated ethenes. In this project various pilot set-ups were tested as a non-invasive technique to remove chlorinated ethenes from contaminated groundwater by integrating a UV reactor into the ATES system. It was demonstrated that per- and trichloro ethenes (PCE and TCE) can be photolyzed by LP UV-lamps up to 10–20% at a relatively high dose of 500 mJ/cm2. However, the photolysis of cis-dichloro ethene (DCE) and vinyl chloride (VC) was limited to maximum 5%. In addition, it was found that, during the photolysis trans-DCE may be formed, which usually is not observed in biodegradation pathways of chloroethenes. As the groundwater composition at a certain location may show significant variations in time (concentration differences of a factor 2–3 were no exception during the various experiments) it is important to adjust the system to the range of concentrations that can be expected. |
| Databáze: | OpenAIRE |
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