Condenser biofouling control with ferrate(VI)
- Northwestern Univ., Evanston, IL
Biofouling is caused by bacterial growth on the walls of the condenser. The cells become attached, increase in number, secrete extracellular material and create a slime. The organic deposits attract additional deposits of organic and inorganic material. Also increases in heat transfer resistance result in less efficient condensation and therefore less backpressure to the turbine. With less vacuum in the system, the steam passes more slowly through the turbine, generating less electricity, and resulting in greater fuel consumption per unit of electrical energy produced. To reduce this extra energy generation cost, condensers must be treated to reduce biofouling. The objective of this study was to investigate the possible use of iron(VI) ferrate as an alternative to chlorine in controlling biofilm formation. The effectiveness of ferrate in controlling film growth was investigated using a model laboratory condenser system. Potassium ferrate was used in this study. Results indicate that ferrate(VI) ion appears to be an effective antifoulant. Short contact times are required for ferrate concentrations of 10/sup -5/M to maintain condenser cleanliness. (DMC)
- OSTI ID:
- 5344799
- Report Number(s):
- CONF-810577-
- Journal Information:
- Proc. Ind. Waste Conf.; (United States), Journal Name: Proc. Ind. Waste Conf.; (United States) Vol. 36; ISSN PIWCA
- Country of Publication:
- United States
- Language:
- English
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59 BASIC BIOLOGICAL SCIENCES
ALKALI METAL COMPOUNDS
ANTIFOULANTS
AUXILIARY SYSTEMS
AUXILIARY WATER SYSTEMS
BIOLOGICAL FOULING
CONDENSER COOLING SYSTEMS
COOLING SYSTEMS
ENERGY SYSTEMS
FERRATES
FOULING
IRON COMPOUNDS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
USES