Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Innovative anti-biofouling technologies can make shipping more eco-friendly

Abstract:
Organisms that stick to the lower structures of ships increase fuel consumption and costs of maintenance substantially. Currently, the organisms are killed with toxic biocides, but these chemicals need to be removed to protect our environment. Researchers are trying to develop environmentally friendly anti-biofouling technologies, such as nano-structured surfaces that make organisms fall off when the ships move (Jun. 2011)

Innovative anti-biofouling technologies can make shipping more eco-friendly

Italy | Posted on July 19th, 2011

Organisms, such as algae and barnacles, sticking to the lower structure of ships are increasing the required propulsive power. It is estimated that ships' fuel consumption could be reduced by up to forty percent by removing those organisms. Erosive systems containing biocides are mainly used for this purpose. However, the use of eco-friendly alternatives such as silicon based fouling release coatings, nearly all enhanced with an oil additive, have increased lately. Researchers at GE Global Research Center in the U.S. have shown that organisms react differently to the various silicone fouling release coatings, and coating type crossed with oil type is very important when it comes to establishing an organism's attachment strength magnitude.

However, there is a need for improved eco-friendly alternatives and researchers are working on solutions. For example, scientists at the University of Gothenburg in Sweden have developed what they call a "low emission" approach where avermectins, a class of antibiotics, are included. Only very small amounts are released, since the substances in the coating are tightly associated with the binding matrix agent. The scientists found that 1mg avermectin/gr coating very effectively hindered adult barnacles from colonization, but a similar coating did not disturb barnacle larvae. The reason is that the barnacles first encounter the avermectin when they try to stick tighter to the surface and the avermectin then make them detach. This principle was named post settlement inhibition (PSI) because this coating only seems to influence adult barnacle growth.

Another innovation that neither involves toxic substances currently used nor nanoparticles, has been developed by researchers connected to the European Commission-funded project AMBIO (Advanced Nanostructured Surfaces for the Control of Biofouling). Their coating technology that can replace the toxic biocides technology is instead based on nano-pattering. Molecules within their innovative paint will arrange themselves in a chequeboard pattern were hydrophobic nanosized points are combined with hydrophilic nanosized points. This texture makes it very hard for algae and barnacles to hold on to the surface and the water's friction will remove them.

Although a coating alternative that do not release any toxic substances into the environment appears to be the safest choice, the AMBIO coating technology will first be studied extensively in a real world setting to make sure it has the right properties, for example that it can last five years on ships, before it can become commercially available.

By: Annette Östrand - youris.com

####

For more information, please click here

Contacts:
youris.com G.E.I.E. - European Research Media Center
Legal Office: Drève du Pressoir 38, B-1190 Brussels
Operative Office: Via Moretto da Brescia 22, I-20133 Milan (Italy)
Tel. + 39 02 700 25 72
Fax + 39 02 700 25 40

Copyright © youris.com

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Yale researchers’ technology turns wasted heat into power June 27th, 2016

FEI Launches Helios G4 DualBeam Series for Materials Science: The Helios G4 DualBeam Series features new capabilities to enable scientists and engineers to answer the most demanding and challenging scientific questions June 27th, 2016

Russian physicists create a high-precision 'quantum ruler': Physicists have devised a method for creating a special quantum entangled state June 25th, 2016

Nanoscientists develop the 'ultimate discovery tool': Rapid discovery power is similar to what gene chips offer biology June 25th, 2016

Marine/Watercraft

Novel anti-biofilm nano coating developed at Ben-Gurion U.: Offers significant anti-adhesive potential for a variety of medical and industrial applications April 25th, 2016

Highlights from the Graphene Flagship April 22nd, 2016

Computer simulation discloses new effect of cavitation: Steam bubbles in fast flowing fluids obviously also result from chemical surface properties; use for reducing wear in pumps and plain bearings March 29th, 2016

Drexel researchers roll out new method for making the invisible brushes that repel dirt: Polymer crystal 'turf' improves nanobrush-making process March 24th, 2016

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Yale researchers’ technology turns wasted heat into power June 27th, 2016

Superheroes are real: Ultrasensitive nonlinear metamaterials for data transfer June 25th, 2016

Russian physicists create a high-precision 'quantum ruler': Physicists have devised a method for creating a special quantum entangled state June 25th, 2016

Nanoscientists develop the 'ultimate discovery tool': Rapid discovery power is similar to what gene chips offer biology June 25th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic