東京湾底質中の微生物による原油系難分解性成分の分解

概要

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The asphaltene fraction of Murban crude oil, refractory compositions, eluted by activated alumina column chromatography with methanol, was degraded by marine bacteria from the sediments of Tokyo Bay. In the sediment of Arakawa Offing, 40% of asphaltene fraction of Murban crude oil was degraded in 20 days under aerobic condition and 17% was degraded in 30 days under anaerobic condition at 20℃. Under aerobic condition, the maximum degradation rate of asphaltene fraction was 0.07-0.08 mg day^<-1> g^<-1> dry sediment at the Arakawa Offing, 0.11mg day^<-1> g^<-1> dry sediment at the Point A and 0.10mg day^<-1> g^<-1> dry sediment at the Ooi Wharf. Under anaerobic condition, the rate was 0.02-0.03mg day^<-1> g^<-1> dry sediment at the Arakawa Offing. In the sediments of the Tokyo Bay, the number of asphaltene fraction degrading bacteria was 6.8×10^3-1.46×10^5 cells g^<-1> dry sediment, and it was 1.0-3.0% of aerobic heterotrophic bacteria.
日本海洋学会の論文
1993-06-25