Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

Field and Laboratory Evaluation of an Automated Bacterial Bioburden Measurement Device

Picture for Field and Laboratory Evaluation of an Automated Bacterial Bioburden Measurement Device
Available for download

Metal corrosion associated with the growth and reproduction of microorganisms is known as microbiologically influenced corrosion (MIC). MIC causes damage to metal surfaces in several water-based industries including drinking water distribution, cooling water equipment, sewage treatment, underground pipes, bilges, piping, and tanks of maritime vessels. MIC is extensively seen in the oil and gas industry.

Product Number: 51323-19047-SG
Author: M, Miller, A, Steffensen, J. Fajt
Publication Date: 2023
$0.00
$20.00
$20.00

The automated device adapts an established enzyme assay bacteria bioburden determination manual method to an automated device. Water supplied to the device is collected and filtered to capture planktonic bacteria and particle-associated bacteria (PAB’s). The filter is subsequently saturated with a fluorescent-labelled enzyme substrate which reacts with a naturally occurring enzyme activity in living bacteria. A fluorescent compound is released and after extraction, the fluorescence is measured with a fluorometer. The enzyme activity is adjusted for temperature, reaction time and sample volume according to a supplier algorithm and used as a proxy for the bacterial bioburden in a water sample. The device supports remote data collection and remote operation and can process up to twelve samples in 24 hours. The study demonstrates that results from the manual method and automated device are very similar. The study also demonstrated good reproducibility between multiple devices. Installation and long-term operation of the device were also demonstrated on different water types, a with high medium and low biological loads. While more testing and validation are needed, the device proved to be reliable and repeatable for clear seawater and potable water applications producing results as fast as 12 samples in 24 hours while needing regular maintenance to replace analysis chemistry after every 50-analysis run.

The automated device adapts an established enzyme assay bacteria bioburden determination manual method to an automated device. Water supplied to the device is collected and filtered to capture planktonic bacteria and particle-associated bacteria (PAB’s). The filter is subsequently saturated with a fluorescent-labelled enzyme substrate which reacts with a naturally occurring enzyme activity in living bacteria. A fluorescent compound is released and after extraction, the fluorescence is measured with a fluorometer. The enzyme activity is adjusted for temperature, reaction time and sample volume according to a supplier algorithm and used as a proxy for the bacterial bioburden in a water sample. The device supports remote data collection and remote operation and can process up to twelve samples in 24 hours. The study demonstrates that results from the manual method and automated device are very similar. The study also demonstrated good reproducibility between multiple devices. Installation and long-term operation of the device were also demonstrated on different water types, a with high medium and low biological loads. While more testing and validation are needed, the device proved to be reliable and repeatable for clear seawater and potable water applications producing results as fast as 12 samples in 24 hours while needing regular maintenance to replace analysis chemistry after every 50-analysis run.

Product tags
Also Purchased
Picture for Influence Of Brine Precipitates On Materials Performance In Geothermal Applications
Available for download

Influence Of Brine Precipitates On Materials Performance In Geothermal Applications

Product Number: 51323-18813-SG
Author: Anastasia Stoljarova, Ralph Bäßler, Simona Regenspurg
Publication Date: 2023
$20.00

Since geothermal reservoirs are a feasible energy source to replace fossil fuel supply, many technologies have been developed to take advantage of geothermal energy. Nevertheless, due to the chemical composition of hydrothermal fluids and temperatures, service conditions in geothermal facilities are demanding in many cases in terms of corrosion. Therefore, materials selection based on preliminary material qualification is essential to guarantee a secure and reliable operation of the facilities.
Picture for Weathering Of Industrial Coatings: Correlation Between Three Years Outdoor Florida Exposure And Four Accelerated Weathering Methods
Available for download

Weathering Of Industrial Coatings: Correlation Between Three Years Outdoor Florida Exposure And Four Accelerated Weathering Methods

Product Number: 51323-18869-SG
Author: Sean Fowler, Kurt Wood, David Duecker
Publication Date: 2023
$20.00


Implementation of classification and certification programs for durable industrial and infrastructure maintenance coating systems is hindered by a lack of test protocols to reliably accelerate the aging process and estimate service lifetime. This gap in the industry also hurts development efforts to
reformulate or add new color choices to existing product lines. The first problem can be addressed by performing long-term weathering testing at outdoor exposure sites in places like south Florida and Arizona, but the need to wait 5 or 10 years or longer to confirm a classification or certify a product makes such schemes difficult to implement and ultimately reduces their value.
Picture for Material Selection for anthropogenic CO2 injection: mechanical and corrosion performances of steels under dense CO2 with impurities
Available for download

Material Selection for anthropogenic CO2 injection: mechanical and corrosion performances of steels under dense CO2 with impurities

Product Number: 51323-18886-SG
Author: Cécile Millet, Guillaume Néel, Luciana Lima, Diana Rodriguez Barrera
Publication Date: 2023
$20.00

Carbon capture and storage (CCS) are technologies aimed at capturing CO2, followed by transportation to a storage site and injection into one of several types of stable geological formations, to trap and prevent its subsequent emission. Though CO2 transport and injection for Enhanced Oil Recovery (EOR) are known for over 40 years, new challenges arise when the CO2 source is anthropogenic, meaning with a human-cause origin and not natural (as in EOR). EU Directive 2009/31/EC states that CO2 streams from power stations or industrial plants "shall consist overwhelmingly of CO2" but may contain associated incidental substances (e.g., SOx, NOx, O2, H2S).
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support