Navigation Links
Keeping ship hulls free of marine organisms
Date:12/6/2012

If a ship is at anchor for longer periods algae, shells and barnacles will colonize it. Every year, this so-called biofouling causes economic losses of billions of Dollar. Biological growth on the underwater surface promotes corrosion. The deposits increase the roughness of the hull below the waterline which has a braking effect as the ship travels. Depending on the roughness of the basified bio layer, the consumption of fuel can increase by up to 40 percent. In the case of a large container ship this can result in additional annual costs of several millions.

All the countermeasures used to date have considerable drawbacks: Cleaning the hull by sandblasting in a dry dock removes also the painted coating and can only be used every three to five years. There are effective hull coatings preventing the growing of adhering bio layers, but in most cases by ecotoxic biocides. Both copper ions and synthetic biocides accumulate in the coastal water and in the sediments. For this reason the particularly toxic tributyltin (TBT) is banned since 2008 and the currently preferred and still permitted copper oxide containing coatings are to be replaced by non-toxic alternatives in the foreseeable future.

As part of the BMWi-supported project consortium "Controlled Antifouling System based on Nanocomposits for Shipping" (GANaS) researchers at the Fraunhofer Institute for Mechanics of Materials (IWM) in Halle have developed a more ecologically-friendly alternative. "The electrochemically active coating system produces regularly changing pH values on the surface of the hull. This effectively prevents colonization without having to use any biocides", explains Professor Manfred Fting of the IWM in Halle who is coordinating the project.

Painted coatings as electrodes

Large area electrodes were painted on an isolating primer coating. The electrochemical active layer based on a sol-gel paint of NTC (nano tech coating gmbH), which was modifie
'/>"/>

Contact: Manfred Fting
manfred.fueting@iwmh.fraunhofer.de
49-345-558-9120
Fraunhofer-Gesellschaft
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Keeping electric vehicle batteries cool
2. University of Miami-led study finds winds played important role in keeping oil away from S. Fla.
3. Housekeeping mechanism for brain stem cells discovered
4. Marine Protected Areas are keeping turtles safe
5. New paints prevent fouling of ships hulls
6. WHOI scientist receives marine microbiology initiative investigator award from Moore Foundation
7. Bioengineered marine algae expands environments where biofuels can be produced
8. First evidence of ocean acidification affecting live marine creatures in the Southern Ocean
9. Europe must not lose momentum in marine biodiversity research
10. At least one-third of marine species remain undescribed
11. Devotes, a project to investigate marine biodiversity and the environment of European seas
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Keeping ship hulls free of marine organisms
(Date:7/21/2015)... YORK , July 21, 2015 ... systems, as seen in the recent U.S. Office ... a solution to the infosec conundrum, but developers ... is stored. To address this dilemma, Biometrics-as-a-Service provider ... its Biometric Tokenization SDK for third party integration. ...
(Date:7/13/2015)... , Jul. 13, 2015 NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile ... provisional patent 62/188684 for BEHAVIORAL-DIRECTED AUTHENTIATION ... new convenient and secure method to make payments.  ... payment methods, introduced with its groundbreaking voice-direct payment ...
(Date:7/9/2015)... , July 9, 2015  Unchained Labs just ... its acquisition of Avid Nano. Avid Nano designs, ... (DLS) systems.    Also today, Unchained ... and easiest to use protein sizing system. The ... a protein,s hydrodynamic size, size distribution, aggregation population ...
Breaking Biology News(10 mins):HYPR Corp. Launches Industry First Biometric Tokenization Platform 2HYPR Corp. Launches Industry First Biometric Tokenization Platform 3HYPR Corp. Launches Industry First Biometric Tokenization Platform 4NXT-ID Patents Behavior-Directed Payments 2NXT-ID Patents Behavior-Directed Payments 3NXT-ID Patents Behavior-Directed Payments 4Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2
... who receives funding for basic research from the Air ... nanostructures that may some day be used in electronic, ... "Devices that are required in many of the ... in the sense that they are often exposed to ...
... -- Two neuroscientists at Cold Spring Harbor Laboratory (CSHL) ... nationwide named by the director of the National Institutes ... "transformative" research projects. Professor Partha Mitra, Ph.D., and ... selection -- announced by the NIH today -- in ...
... new university/industry network to pursue the development of biomaterials, ... increasing incidence of eye disease. The 20/20: NSERC ... as part of the Natural Sciences and Engineering Research ... Minister of State (Science and Technology) Gary Goodyear today ...
Cached Biology News:AFOSR's basic research may lead to revolutionary new devices 22 neuroscientists from Cold Spring Harbor Laboratory awarded 'transformative' NIH grants 22 neuroscientists from Cold Spring Harbor Laboratory awarded 'transformative' NIH grants 32 neuroscientists from Cold Spring Harbor Laboratory awarded 'transformative' NIH grants 4New research network at McMaster aims to build a better eye 2
(Date:7/28/2015)... July 28, 2015  Kerastem Technologies announce that the ... U.S. FDA Center For Biologics Evaluation and Research (CBER) ... a clinical trial investigating the safety and feasibility of ... early male pattern baldness (androgenic alopecia). The ... initial clinical work in Europe ...
(Date:7/28/2015)... , July 28, 2015 CSL Behring ... Administration has accepted for review the company,s Biologics License ... single-chain (rVIII-SingleChain) for the treatment of hemophilia A. In ... Hemophilia A is a ... VIII; nearly all affected patients are male. People with ...
(Date:7/28/2015)... ZIONA, Israel , July 28, ... OTC:CQPTY), a regenerative medicine company utilizing its proprietary ... announced that Shomrat Shurtz has been appointed Senior ...      (Photo: http://photos.prnewswire.com/prnh/20150728/246955 ) ... years of experience in marketing, regulatory and business ...
(Date:7/27/2015)... FRANKLIN, Tenn. , July 27, ... provider of health care services and one of ... today announced that its parent company and sole ... agreement with Medical Properties Trust, Inc. ("MPT") (NYSE: ... for $900 million in cash.  The transaction is expected to ...
Breaking Biology Technology:Kerastem Receives Conditional Approval from FDA for Alopecia Trial 2U.S. FDA Accepts for Review CSL Behring's Biologics License Application for Its Novel rVIII-SingleChain Therapy for Patients with Hemophilia A 2U.S. FDA Accepts for Review CSL Behring's Biologics License Application for Its Novel rVIII-SingleChain Therapy for Patients with Hemophilia A 3CollPlant Names Shomrat Shurtz Senior Director of Business Development 2Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 2Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 3Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 4Capella Healthcare Announces Agreement With Medical Properties Trust, Inc. 5
... Consulting US, a division of London-based Double Helix ... Stuchiner to the position of Vice President. ... strategic pricing, reimbursement and market access consultants with ... product commercialization services to firms in the pharmaceutical, ...
... Calif., March 30 TorreyPines Therapeutics, Inc. (Nasdaq: ... District Court of the Southern District of New York ... of Axonyx Inc. ("Axonyx") against Axonyx and several of ... in 2006. The plaintiffs alleged that the defendants made ...
... 30 BioMedical Enterprises, Inc. (BME), a rapidly growing ... orthopaedic memory metal implants, announced today that it has ... and Marketing. BME specializes in nitinol implants that ... together to promote bone union. The O ...
Cached Biology Technology:Double Helix Appoints Ann Stuchiner Vice President of US Consulting Division 2Stockholder Suits Related to TorreyPines Therapeutics, Inc. Dismissed 2BioMedical Enterprises, Inc. (BME) Announces the Appointment of Keith M. Peeples as Vice President, Sales and Marketing 2
... is a chromogenic medium for the ... Salmonella (except S. thyphi) and total ... detection takes a maximum of 24 ... no sterilization during preparation and performs ...
... ActiveSight, the leading provider of X-ray ... offers fragment-based screening services to its ... involves the binding of drug-like fragments ... protein drug targets, allowing scientists to ...
... Chromatography Data System (CDS) now provides ... chromatography data processing and reporting for ... LC. The companys innovative HPLC instrument ... benefits of Thermo Scientific Hypersil GOLD ...
Denhardt's powder mixture (for 50X stock solution)...
Biology Products: