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Environmental Microbiology

27. Environmental Microbiology. Algal Blooms. Pollutants (nutrients) may cause algal blooms. Algal blooms lead to eutrophication. Figure 27.15. Coliforms.

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Environmental Microbiology

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  1. 27 Environmental Microbiology

  2. Algal Blooms • Pollutants (nutrients) may cause algal blooms. • Algal blooms lead to eutrophication. Figure 27.15

  3. Coliforms • Aerobic or facultatively anaerobic, gram-negative, non–endospore forming rods that ferment lactose to acid plus gas within 48 hours, at 35°C. • Indicator organisms • Used to detect fecal contamination. • MPN: • Most probable number/100 ml of water.

  4. Multiple-Tube Method Figure 6.18a

  5. Multiple-Tube Method Figure 6.18b

  6. Figure 27.19

  7. MUG Test • ONPG causes E. coli to make -galactosidase. - galactosidase MUG fluorescent compound Figure 27.16

  8. Municipal Water Treatment Figure 27.17

  9. Municipal Sewage Treatment Figure 27.20

  10. Activated Sludge Figure 27.21

  11. Anaerobic Sludge Digester • CO2 + 4 H2 CH4 + 2 H2O • CH3COOH  CH4 + CO2 Figure 27.24

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