Methane oxidation in biofilters measured by mass-balance and stable isotope methods.

@article{Powelson2007MethaneOI,
  title={Methane oxidation in biofilters measured by mass-balance and stable isotope methods.},
  author={David K Powelson and Jeffrey P. Chanton and Tarek Abichou},
  journal={Environmental science & technology},
  year={2007},
  volume={41 2},
  pages={620-5}
}
Simultaneous flux and isotope measurements on compost and sand biofilters showed that the fraction of CH4 oxidized, calculated from delta13C measurements using a closed system model (f(oxir,C)), averaged only 0.455 of the fraction oxidized based on mass-balance measurements (f(oxm)). The discrepancy between f(oxm) and f(oxir,C) may be partly due to complete oxidation of a portion of the inflow gas, thereby eliminating its contribution to the emitted methane on which isotopic measurements are… CONTINUE READING

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