Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1991-10-04
1993-09-21
Tung, T.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
2041531, 20415311, 204403, 204404, 324 711, G01N 2726
Patent
active
052465608
ABSTRACT:
Disclosed is a novel electrochemical probe and technique to monitor biofilm activity before the biofilm has been permanently established and microbiologically influenced corrosion (MIC) initiated. This probe includes two sets of metal electrodes isolated from each other. A power source is used to apply a potential difference of between 50 and 500 mV on the two sets of electrodes to activate the probe. Programmed timing, measuring and switching equipment and a data recording device monitors the biofilm-caused depolarization effects on the electrode sets by measuring an increase of DC current produced by the applied potential difference. The equipment also monitors DC current generated between the electrodes after removing the power source and records the AC resistance between the electrodes indicating mostly the resistance of the biofilm covering the electrodes.
REFERENCES:
patent: 2947679 (1960-08-01), Schaschl et al.
patent: 3331021 (1967-07-01), Marsh et al.
patent: 3486996 (1969-12-01), Annand
patent: 3491012 (1970-01-01), Winslow
patent: 3616415 (1971-10-01), Watson
patent: 3633099 (1972-01-01), Richman
patent: 3639876 (1972-02-01), Wilson
patent: 3661750 (1972-05-01), Wilson
patent: 4506540 (1985-03-01), March
patent: 4789434 (1988-12-01), Little et al.
patent: 4831324 (1989-05-01), Asakura et al.
patent: 4970145 (1990-11-01), Bennetto
"Cathodic Protection Criteria for Controlling Microbially Influenced Corrosion in Power Plants" EPRI Report #NP-7312 May 1991 p. 7-1 to p. 7-2.
Metal Handbook, Ninth Edition, vol. 13, pp. 900-901, ASM International , 1987.
"Electrochemical Approach to Biofilms Monitoring" G. Salvago et al. p. 5-1 to p. 5-7 Microbially Influenced Corrosion & Biodeterioration Univ. of Tenn.
"A Critical Review of the Application of Electrochemical Techniques to the Study of MIC" F. Mansfeld et al. p. 5-33 to p. 5-40 Microbially Influenced Corrosion & Biodeterioration, Univ. of Tennessee.
"An Electrochemical Method for Monitoring the Development of Biofilms in Cooling Water" George Licina et al p5. -41 to p. 5-46 Microbially Influenced Corrosion & Biodeterioration, Univ. of Tennessee.
Microbially Influenced Corrosion & Biodeterioration, Univ. of Tennessee.
Licina George J.
Nekoksa George
Coit Laurence
Electric Power Research Institute Inc.
Tung T.
LandOfFree
Apparatus for monitoring biofilm activity does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for monitoring biofilm activity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for monitoring biofilm activity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1047177