Vaishnavi Sarathy
Oregon Health & Science University
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Environmental Science & Technology | 2010
Vaishnavi Sarathy; Alexandra J. Salter; James T. Nurmi; Graham O’Brien Johnson; Richard L. Johnson; Paul G. Tratnyek
1,2,3-Trichloropropane (TCP) is an emerging contaminant because of increased recognition of its occurrence in groundwater, potential carcinogenicity, and resistance to natural attenuation. The physical and chemical properties of TCP make it difficult to remediate, with all conventional options being relatively slow or inefficient. Treatments that result in alkaline conditions (e.g., permeable reactive barriers containing zerovalent iron) favor base-catalyzed hydrolysis of TCP, but high temperature (e.g., conditions of in situ thermal remediation) is necessary for this reaction to be significant. Common reductants (sulfide, ferrous iron adsorbed to iron oxides, and most forms of construction-grade or nano-Fe(0)) produce insignificant rates of reductive dechlorination of TCP. Quantifiable rates of TCP reduction were obtained with several types of activated nano-Fe(0), but the surface area normalized rate contants (k(SA)) for these reactions were lower than is generally considered useful for in situ remediation applications (10(-4) L m(-2) h(-1)). Much faster rates of degradation of TCP were obtained with granular Zn(0), (k(SA) = 10(-3) - 10(-2) L m(-2) h(-1)) and potentially problematic dechlorination intermediates (1,2- or 1,3-dichloropropane, 3-chloro-1-propene) were not detected. The advantages of Zn(0) over Fe(0) are somewhat peculiar to TCP and may suggest a practical application for Zn(0) even though it has not found favor for remediation of contamination with other chlorinated solvents.
Environmental Science & Technology | 2005
James T. Nurmi; Paul G. Tratnyek; Vaishnavi Sarathy; Donald R. Baer; James E. Amonette; Klaus H. Pecher; Chongmin Wang; John C. Linehan; Dean W. Matson; R. Lee Penn; M. D. Driessen
Journal of Physical Chemistry C | 2008
Vaishnavi Sarathy; Paul G. Tratnyek; James T. Nurmi; Donald R. Baer; James E. Amonette; Chan Lan Chun; R. Lee Penn; Eric J. Reardon
Surface and Interface Analysis | 2008
Donald R. Baer; James E. Amonette; Mark H. Engelhard; Daniel J. Gaspar; Ajay S. Karakoti; Satyanarayana V N T Kuchibhatla; Ponnusamy Nachimuthu; James T. Nurmi; You Qiang; Vaishnavi Sarathy; Sudipta Seal; Amit Sharma; Paul G. Tratnyek; Chong M. Wang
Journal of Nanoparticle Research | 2011
James T. Nurmi; Vaishnavi Sarathy; Paul G. Tratnyek; Donald R. Baer; James E. Amonette; Abhijeet J. Karkamkar
Archive | 2010
Paul G. Tratnyek; Alexandra J. Salter; James T. Nurmi; Vaishnavi Sarathy
ChemInform | 2007
Donald R. Baer; Paul G. Tratnyek; You Qiang; James E. Amonette; John C. Linehan; Vaishnavi Sarathy; James T. Nurmi; Chongmin Wang; Jiji Antony
Archive | 2009
Paul G. Tratnyek; Vaishnavi Sarathy; James T. Nurmi; Donald R. Baer; James E. Amonette; Chan Lan Chun; Ryland L. Penn; Eric J. Reardon
Archive | 2005
James E. Amonette; Vaishnavi Sarathy; John C. Linehan; Dean W. Matson; C. M. Wang; James T. Nurmi; Klaus H. Pecher; R. Lee Penn; Paul G. Tratnyek; Donald R. Baer
Archive | 2010
Paul G. Tratnyek; Vaishnavi Sarathy; Alexandra J. Salter; James T. Nurmi; Graham O’Brien Johnson; Tanner DeVoe; Priscilla Lee