UVC showing positive signs of biofouling solution


The latest research into the effectiveness of ultraviolet (UVC) on biofouling of warships is giving scientists better insight into what can help keep ships cleaner and smoother. I go.

Research Papers, “Application of UVCs Used Synergistically with Surface Materials to Prevent Marine Biofouling” Published in the June edition of Journal of Marine Science and Engineering..PhD candidate Kylie Richard is the main author of this treatise and professor of marine engineering and oceanography. Jeffrey swain, assistant professor of oceanography Kelly Han Football, Chief Research Engineer Harrison Gardner and Research Assistant Chris Hickman.

Continuation of previous research on biofouling and UVC on warships. A new study analyzed the anti-fouling effect of three UVCs under multiple conditions. Richard looked at the red or white UVC treated surfaces to see which one was more effective in preventing biofouling. Colored surfaces are known to affect the colonization of living organisms. Richard also investigated whether UVC works synergistically with two surfaces with different reflectances (stainless steel or polycarbonate), and finally, the effectiveness of UVC exposure at different levels, such as weekly and 10 minute intervals. Did. There was no change in biofouling on the red or white surface when exposed to 254nm UVC, but reflectance studies have shown that the macrofau of stainless steel panels, especially in coverage of bryozoa, lamellibrachia and tunicates. The annular settling has been shown to be significantly greater than that of polycarbonate. Long and frequent exposure intervals have also been shown to be effective in reducing biofouling.

Biofouling causes many problems for ships, especially warships that depend on the speed and accuracy of various missions. Richard said that after a few minutes in the water, the surface of the vessel would pick up a conditioning film that would serve as an entrance for larger biofouling organisms. After the film, a microfowling process occurs. This is when bacteria and other single-celled organisms, and a few days later, macrosweed communities such as barnacles, sponges, and tunicates can begin to develop. This build-up changes the roughness of the surface, increases drag and slack, and reduces fuel efficiency. Vessels with little biofilm and no macrofouling can result in fuel consumption of up to $ 1.2 million.

It was Richard’s first time working in a UVC and biofouling lab. Finding innovative ways to use UVC on different surfaces and finding new techniques to study its effectiveness led to an interesting experiment. Richard realized that while the field research could lead to some amazing times, some parts of the job were truly unexpected.

“Therefore, the overall goal was to prevent biofouling from growing on surfaces exposed to UVC light. So we were using these lamps and I put my box. Every week when we evaluated, something was really pushing up the ramp, ”said Richard. “You wouldn’t think it’s possible because it exposes UVC light, but things just keep growing. What’s going on and how things are going, I wonder if it’s there. “

Richard said organisms can take hold when the lights are out, but it will be a source of doctoral research to see how barnacles survive under UVC exposure. Richard said being part of the lab turned to this type of research and gave her the expertise she could use to help others.

“I’m crazy to be part of the whole experience,” she said.