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Active Bacterial Diversity as Biomarker for Activated Sludge Inhibition by Chromium

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Toxic chemicals such as hexavalent chromium entering wastewater treatment systems cause a significant concern for treatment performance due to the inhibition of heavy metals on biomass growth. The objective of this study was to use bacterial diversity as a biomarker for measuring system health under the impact of Cr (VI) inhibition. The results from laboratory scale reactor, the Sycamore Creek Wastewater Treatment Plant (WWTP) and the Mill Creek WWTP demonstrate that the bacterial diversity is largely reduced as Cr (VI) concentration increases. The results suggeste that the bacterial diversity can be used as a biomarker for system health.

Keywords: Cr (VI); activated sludge; bacterial diversity; molecular tools

Document Type: Research Article


Publication date: January 1, 2010

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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