Draff was compared to a number of commonly used and commercially available treatments for the amelioration of CAH contaminants. Draff was found to be a suitable treatment under all conditions investigated except when it had been irradiated and performed as well (if not better than) all of the commercial treatments. It was concluded that Draff as a CAH ameliorant merits further investigation involving a scaled-up pilot study in the laboratory which if successful would be followed by field trials at contaminated sites. The quantitative data from the field site which was imputed in to the contaminant visualisation model (Sequence) indicated that attenuation as occurring at the site, albeit rather slowly. The comparison which included revised reaction rates derived from the Draff investigations implied that treatment with Draff at the site would enhance overall attenuation. An investigation regarding the efficacy of biosensors as site evaluation and monitoring tools found that the sensors were of limited value when remediation goals are considered. None of the sensors investigated supplied sufficient sensitivity. It was therefore concluded that the sensors should only be utilised on a cursory “toxic or non toxic” basis. It was concluded that Draff proved effective as an ameliorant for CAH contamination under the conditions tested and merits further investigation at the pilot and potentially the field scale. The contaminant visualisation model proved invaluable for the simplification and analysis of a large data set and furthermore estimated that Draff would enhance attenuation rates at the field site in question.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:446081 |
| Date | January 2007 |
| Creators | Cassidy, Leigh |
| Contributors | Paton, Graeme I. ; Killham, Ken ; Read, David |
| Publisher | University of Aberdeen |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=240741 |
Page generated in 0.0026 seconds