Development of a Shipboard Ultrasonic Ballast Water Organism Control

Award Information
Agency:
Department of Commerce
Branch
n/a
Amount:
$50,000.00
Award Year:
1998
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
43568
Agency Tracking Number:
43568
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1100 Alakea Street, 31ST FLOOR, Honolulu, HI, 96813
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
This project develops and demonstrates an innovative and economic technology that uses ultrasonic energy to destroy organisms in a ship ballast system, thereby minimizing impact from alien species introduced from shipping. Phase 1 results successfully showed that organisms were rapidly destroyed by ultrasound at various frequencies and power densities. Although the mechanism of destruction in an ultrasonic bath is typically believed to be cavitation, results indicate that extremely high acceleration forces experienced by small particles in an ultrasound field create the primary mechanism of damage. Forces (on the order of 1000's of G¿s) cause individual organisms, or parts of an organism, to vibrate in resonance with sonic field, literally ripping the organisms apart. Phase 2 efforts will build on Phase 1 successes to design and build a full-scale prototype Shipboard Ultrasonic Ballast Water Organism Control (SUBWOC) system, which will include a ten-foot long section of pipe sheathed in piezo-ceramic ring sound transducers. Tasks include design and fabrication of the SUBWOC, bench testing and lab testing with 300-gallons of known organism cultures. Thereafter, sea trials will occur aboard commercial vessels by our Industry Partners, including Mason Navigation Company and Sause Brother¿s Tug & Barge.

* information listed above is at the time of submission.

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