Biofouling of Groundwater Systems by Thiothrix spp. |
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Authors: | RL Brigmon HW Martin HC Aldrich |
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Institution: | (1) Environmental Biotechnology Section, Savannah River Technology Center, Westinghouse Savannah River Company, Bldg. 704-8T(TNX), Aiken, SC 29808, USA , US;(2) TerraLogica, Inc., Bensalem, PA 19020, USA , US;(3) Department of Microbiology & Cell Science, University of Florida, Gainesville, FL 32611, USA , US |
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Abstract: | Thiothrix spp., sulfide-oxidizing filamentous bacteria, were found to be a principal bacterial component of aquatic biofilms causing
biofouling in selected municipal water storage tanks, private wells, and drip irrigation systems in Florida. Treatments of
up to 200 ppm chlorine in the affected systems could not prevent return of the biofouling problem. The water originated from
the upper Floridan aquifer and associated surficial aquifers in central and north Florida. Samples were examined where visible
biofilms had a white, filamentous appearance, indicative of Thiothrix spp. The detection of Thiothrix spp. was confirmed by enzyme-liked immunosorbent assay (ELISA), indirect immunofluorescence (IIF), and microbiological procedures.
It was estimated through immunocytochemical procedures that Thiothrix spp. comprised 18% of the biofilm in the municipal water storage tanks. These observations confirm that specific biological
and chemical interactions may induce physical changes leading to significant biofouling.
Received: 6 November 1996 / Accepted: 14 March 1997 |
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