... to measure total living planktonic microbes and sessile microbes found on surfaces and in solids. ATP is the energy storage molecule found in all living cells and, when combined with luciferase enzyme, will produce measurable light. The more relative light produced, the greater the amount of ATP. The ATP...

...Abstract Microbially influenced corrosion (MIC) is a process whereby microbial cells living in an exopolymer matrix, known as a biofilm, induce corrosion of the associated surface. The risk of MIC within a system is usually assessed by measuring planktonic (free-floating) cells, which is assumed...

...It has been theorized that monitoring the fluid, which contains planktonic cells, will therefore be satisfactory, as the numbers of these planktonic cells will indirectly correlate to the cells that are becoming sessile as well as to the cells that are shedding off of the biofilm (assuming...

... Traditionally, biocides are selected after simple planktonic performance tests on the basis of better time/kill profiles against indigenous bacteria. While this is relevant to controlling bacterial populations in a flowing system, it is not relevant in terms of predicting control of biofilm formation, reservoir...

..., which identified Microbiologically Influenced Corrosion (MIC) as the primary corrosion driver, and CO₂ and oxygen corrosion as secondary contributors. MIC was considered as the prominent mechanism in this system based on: identification of significant numbers of planktonic microorganisms...

... such conditions. The impact of increasing degrees of souring on the performance of a third generation THPS formulation and glutaraldehyde is shown in Figure 1 (each product tested at a 150 ppm active level against marine, field isolated, planktonic SRB). Further comparative performance data for a third...

..., and then incubated. After incubation, morphologically characteristic colonies on the selective medium are regarded as presumptive Legionella. Cooling Water Sampling Legionella pneumophila Legionnaires’ disease biofilm planktonic bacteria biocide cooling water system INTRODUCTION The history...

... corrosion MIC monitoring planktonic sessile stainless steel visual welds INTRODUCTION Bacterial corrosion in water systems can be rapid yet still be difficult to confirm as such. Failure to culture microbes associated with corrosion from a suspect system can delay or even prevent corrective...

... in internal corrosion leaks and chemical expenditures. Acid Producing Bacteria APB Biocide Corrosion Inhibitor Coupon Electron Microscopy Epifluorescence Microscopy Microbiologically Influenced Corrosion MIC Planktonic Sessile Sulfate Reducing Bacteria SRB INTRODUCTION Historically...

... (to remove any planktonic microorganisms that may be present in the water adhering to the cylinder) and then placed in bottles containing 400 ml of sterile 0.1M phosphate buffer of the appropriate pH. Biocide was added to the bottles in an amount calculated to give the desired concentration and the bottles...

... sessile planktonic cost savings economics water quality scorecards filters and Standard Operating Procedures Extensive time and effort have been required to address the effect of MIC and improve water quality for the waterflood. Through an understanding of MIC, thorough, systematic optimization...

... involves adding a biocide to kill both the microorganisms in suspension (planktonic microorganisms), as well as those contained within the biofilm (sessile microorganisms). However, merely killing planktonic organisms will not solve the biofouling problem in a system. Ideally, biocide treatments should...

... as an alternative cooling water biocide should be further explored. hydrogen peroxide corrosion deposition planktonic biofilm ultraviolet light glutaraldehyde tetrakishydroxymethyl phosphonium chloride INTRODUCTION Microbiology Planktonic counts were estimated by aseptically collecting cooling tower water...

...Abstract A number of antimicrobial compounds commonly used in cooling water, paper making, and oil field systems were evaluated for their ability to control both sessile and planktonic sulfate-reducing bacteria (SRB). While all the biocides tested are known to be effective against common...