251362 The Separation of Sulfur Dioxide From Air Using Magnetic Nanoparticles

Monday, October 29, 2012: 4:18 PM
405 (Convention Center )
T. Grant Glover, SAIC, Gunpowder, MD, Daniel Sabo, Chemistry and Biochemistry, Georgia Institute of Technology , Atlanta, GA, Lisa Vaughan, Georgia Institute of Technlogy , Atlanta, GA, Joseph Rossin, Guild Associates, Dublin, OH and Z. John Zhang, Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA

The Separation of Sulfur Dioxide from Air Using Magnetic Nanoparticles

T. Grant Glover*, Daniel Sabo+, Lisa A. Vaughan+, Joseph A. Rossin#, Z. John Zhang+

*SAIC, Gunpowder Branch, P.O Box 68, APG, Maryland 21010

+Georgia Institute of Technology School of Chemistry and Biochemistry,

901 Atlantic Drive, Atlanta, Georgia, 30332

#Guild Associates, Incorporated, 5750 Shier-Rings Road, Dublin, Ohio 43016

The adsorption of sulfur dioxide on magnetic nanoparticles is examined.  Microbreakthrough experiments were used to quantify the ability of magnetic nanoparticles to adsorb sulfur dioxide from air.  The results show that the magnetic nanoparticles out perform traditional activated carbon.  The adsorption capacity of the materials is noteworthy given the 150 m2/g surface area of the magnetic nanoparticles.  Additionally, the nanoparticles exhibit a 23% decrease in the remnant magnetization, a 20% decrease in saturation magnetization, and a 9% decrease in coercivity.  Adsorbents that provide a magnetic signal upon adsorption could have broad implications on adsorption-based separations. 

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