碩士 / 國立中興大學 / 環境工程學系所 / 100 / This pilot-scale study was aimed to evaluate the efficacy of new stabilized nanoscale zero-valent iron (NZVI) particles in a contaminated site of groun dwater PCE that belongs to one of the dense non-aqueous phase liquids (DNAPLs). DNAPL is mostly carcinogenic or highly toxic. Once DNAPL was released into an aquifer, it could take a very long time to restore the site. Thus far, it has not been seen that a DNAPL site was successfully remediated in Taiwan. This study was carried out through the monitoring of PCE concentrations and it derivatives in wells before and after the injection of NZVI, offered by GeoNano Inc. Total 60 VOCs and Fe concentrations in groundwater were analyzed, which was then used to evaluate the influenced distance and environmental impact of NZVI.
The results demonstrated that NZVI could be effective toward the degradation of targeted PCE which achieved 85% removal efficiency in 293 hours after NZVI injection. No other by-products [i.e., vinyl chloride (VC)] were obviously increased. Moreover, the influenced distance could reach more than 10 meter, and the clogging in wells was not appreciably observed.
| Identifer | oai:union.ndltd.org:TW/100NCHU5087043 |
| Date | January 2012 |
| Creators | Hung-Hsiang Huang, 黃泓翔 |
| Contributors | 謝永旭 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 75 |
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