New Science Study Findings Recently Were Published by Researchers at Queen's University
March 9, 2012 | Copyright
A new study, "Carbon Isotopic Fractionation of CFCs during Abiotic and Biotic Degradation," is now available. "Carbon stable isotope ((13)C) fractionation in chlorofluorocarbon (CFC) compounds arising from abiotic (chemical) degradation using zero-valent iron (ZVI) and biotic (landfill gas attenuation) processes is investigated. Batch tests (at 25 [degrees]C) for CFC-113 and CFC-11 using ZVI show quantitative degradation of CFC-113 to HCFC-123a and CFC-1113 following pseudo-first-order kinetics corresponding to a half-life (t(1/2)) of 20.5 h, and a ZVI surface-area normalized rate constant (k(SA)) of -(9.8 [+ or -] 0.5) x 10(-5) L m(-2) h(-1)," scientists writing in the journal Environmental Science & Technology report (see also Science). …
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