Navigation Links
Corrosion-inhibiting coatings containing 'good' bacteria
Date:3/29/2009

A new, environmentally friendly coating that protects metals against corrosion in seawater has been developed by a team of researchers from Sheffield Hallam University. At the Society for General Microbiology meeting in Harrogate today, (Monday 30 March), Jeanette Gittens and colleagues described how they had encapsulated spores from a bacterium into a sol-gel coating which then protected an aluminium alloy from microbial corrosion.

Microbially-influenced corrosion (MIC) of metals at sea is a big safety and financial problem caused by the production of damaging substances such as hydrogen sulphide by sulphate-reducing micro-organisms within biofilms on the surfaces. Overall it is estimated that corrosion costs the UK around 3-4% of GDP. Existing anti-corrosion treatments are costly, ineffective and often include biocides and inhibitors that are toxic to aquatic life.

The corrosion-preventing bacteria occur naturally in the environment. Incorporating its spores into the coating did not seem to affect their viability living cells were still found in the coating after more than six weeks in seawater. The coating could also be heat cured at temperatures up to 90C.

Speaking at the meeting, Ms Gittens said, "Our results from laboratory studies and a field trial in the Thames estuary have shown that the bacteria-containing coating is substantially more effective in the prevention of corrosion than the sol-only coating. We are investigating what causes the corrosion protection we think it might be due to the immobilized bacteria producing antimicrobial agents which inhibit the growth of corrosion-causing microorganisms". Additional trials are now planned or in progress in a variety of marine environments.


'/>"/>

Contact: Dianne Stilwell
d.stilwell@sgm.ac.uk
07-957-200-214
Society for General Microbiology
Source:Eurekalert

Page: 1

Related biology news :

1. New polymer coatings prevent corrosion, even when scratched
2. Ultra-fine coatings on sediment grains influence nitrate and sulfate storage in soil
3. University researchers to develop coatings that kill superbugs
4. Blueberry and green tea containing supplement protects against stroke damage
5. Clones on task serve greater good, evolutionary study shows
6. Immune police recognize good and bad guys in the body
7. Good earth: Brown chemists show origin of soil-scented geosmin
8. How the brain handles surprise, good and bad
9. Foods, not specific nutrients, may be key to good health
10. Cranberry sauce: good for what ails you
11. Overexcited neurons not good for cell health
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/15/2016)... Rico , Jan. 15, 2016 Recent ... and small to find new ways to ensure data ... iOS and Android that ... on biometrics, transforming it into a hardware authorization token. ... users swipe their fingerprint on their KodeKey enabled device ...
(Date:1/11/2016)... Calif. , Jan. 11, 2016 Synaptics ... human interface solutions, today announced that its ClearPad ® ... integration (TDDI) products won two separate categories in the ... Mobile Innovator and Best Technology Breakthrough. The Synaptics ® ... cost, a simplified supply chain, thinner devices, brighter displays ...
(Date:1/8/2016)... 8, 2016 NXTD ), a ... ® , a privately held leading direct seller of ... 5000 fastest-growing company announced that on December 31, ... million in Nxt-ID to develop a proprietary new wireless ... ® , a unique smart wallet that serves to ...
Breaking Biology News(10 mins):
(Date:2/9/2016)... ... February 09, 2016 , ... ... innovations on its free and validated Electronic Data Capture (EDC) system ClinCaptureand its ... in Clinical Trials West Coast 2016 Conference in San Mateo, California on February ...
(Date:2/9/2016)... HOUSTON , Feb. 9, 2016 /PRNewswire/ ... virus-driven immunotherapies for cancer, announced that its ... the European Commission as an orphan medicinal ... the deadliest form of glioma, strikes approximately ... and EU. http://photos.prnewswire.com/prnh/20160208/330986LOGO ...
(Date:2/9/2016)... 9, 2016 DelveInsight,s, ... report provides in depth insights on the ... the Protein-Tyrosine Phosphatase 1B (PTP1B) Inhibitors. The ... various stages of development including Discovery, Pre-clinical, ... and Preregistration. Report covers the product clinical ...
(Date:2/8/2016)... Inc. today announced that Director Robert A. Ingram has ... addition, Robert Keegan has been appointed to the Board ... --> North Carolina . --> ... $32.8 million of net proceeds in a private Mezzanine B financing ... Research Triangle area of North Carolina . ...
Breaking Biology Technology: