Electrospray Collection of Airborne Contaminants

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$596,940.00
Award Year:
2008
Program:
SBIR
Phase:
Phase II
Contract:
NNC08CA08C
Award Id:
83784
Agency Tracking Number:
066100
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
696 Amity Road, Bethany, CT, 06524
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
783630189
Principal Investigator:
JosephBango
Principal Investigator
(203) 393-9666
jbango@ctanalytical.com
Business Contact:
JosephBango
Business Official
(203) 393-9666
jbango@ctanalytical.com
Research Institute:
n/a
Abstract
In stark contrast to current stagnation-based methods for capturing airborne particulates and biological aerosols, our demonstrated, cost-effective electrospray technology employs an entirely different approach based on the remarkable effectiveness of small, highly charged liquid droplets formed from an electrospray source to "getter" both particles and polar molecules dispersed in a gas. Less capable and expensive collection system technologies are generally based on stagnation of high velocity ambient airflow on a collecting surface. The momentum of particles and heavy molecules precludes their following gas streamlines during this stagnation. Instead, they concentrate and are trapped on the detector's surface if the surface is "sticky," or concentrated in the surface boundary layer, which can be separated from the mainstream flow and collected. Typically, current separation methodology collects about 50 percent of the particles between 1.0 and 10 microns in diameter from a flow of 500 L/min with a power consumption of up to 500 watts; i.e., about 1 watt of power is required for a small fan to compress 1 liter of air per minute to produce the high velocity airflow necessary for effective trapping of small bio-particles and heavy molecules. However, our electrospray technology consumes negligible power and achieves virtually 100 percent particle collection. In fact, we have demonstrated that the power efficiency of electrospray gettering for a single electrospray emitter to collect 100 percent of the particles, often without a fan, at 10,000 times greater than the power efficiency of state of the art systems.

* information listed above is at the time of submission.

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