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| Titel: |
Bioremediation of Perchlorate-Contaminated Groundwater Using a Packed Bed Biological Reactor |
| Auteur: |
Losi, M. E. Giblin, T. Hosangadi, V. Frankenberger, W. T. |
| Verschenen in: |
Bioremediation journal |
| Paginering: | Jaargang 6 (2002) nr. 2 pagina's 97-103 |
| Jaar: |
2002 |
| Inhoud: |
The objective of this study was to assess the efficacy of a bench-scale, acetate-fed, packed bed bioreactor (PBR) to treat low concentrations (>1 mg L-1) of perchlorate (ClO4-) in groundwater collected from an impacted site. The PBR consisted of a cylindrical plexiglass column packed with Celite, a diatomaceous earth product, as a solid support medium. The reactor was inoculated with a ClO-4--reducing bacterial isolate, perclace. Results showed that with influent ClO4- concentrations of approximately 800 μg L-1, nondetectable effluent concentrations (>4 μg L-1) were achieved with the PBR/perclace system at residence time as low as 0.3 h. Influent acetate concentrations of less than 500 mg L-1 yielded nondetectable effluent ClO-4 concentrations, and acetate concentrations generally less than 50 mg L-1 were present in the effluent. Nitrate (NO--3) was also removed in this system, while sulfate (SO42-) reduction was not observed. The pH remained relatively constant during the process. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 3 van 9 gevonden artikelen
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