Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Biodegradation Capacity Utilization as a New Index for Evaluating Biodegradation Rate of Methane

  • Kim, Tae Gwan (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Yi, Taewoo (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Yun, Jeonghee (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Ryu, Hee Wook (Department of Chemical Engineering, Soongsil University) ;
  • Cho, Kyung-Suk (Department of Environmental Science and Engineering, Ewha Womans University)
  • Received : 2012.11.08
  • Accepted : 2013.01.12
  • Published : 2013.05.28
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Abstract

Density of catalytic organisms can determine the biodegradation capacity and specific biodegradation rate (SBR). A new index, biodegradation capacity utilization (BCU, %), was developed for estimating the extent of actual biodegradation of a gas compound over the full capacity. Three methanotrophic cultures were serially diluted (1-1/25), and methane SBR and BCU were measured. Consistently, biomass reduction increased the SBR and decreased the BCU. Linearity (p < 0.05, r > 0.97) between the BCU and cell density indicated the reflection of biodegradation capacity by BCU. Therefore, BCU is indicative of whether the density of catalytic organisms is pertinent for SBR evaluation of low-soluble gaseous compounds.

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