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The kinetics and characteristics of phenanthrene degradation by a microbial consortium W4 isolated from Henan Oilfield were investigated.The degradation percentage of solid phenanthrene at 200 mg/L in liquid medium after 6 days of incubation was higher than 95% under the condition of 37 ~C and 120r/min by this microbial consortium.The degradation of phenanthrene could be fitted to a first-order kinetic model with the half-life of 1.25 days.The optimum conditions for degradation of phenanthrene by consortium W4 were as follows:temperature about 37℃,pH from 6.0 to 7.0 and salinity about 8.0 g/L. It was concluded that microbial consortium W4 might degrade phenanthrene via both salicylic acid and o-phthalic acid pathways by analyzing products with GC-MS.
The kinetics and characteristics of phenanthrene degradation by a microbial consortium W4 isolated from Henan Oilfield were investigated. The degradation percentage of solid phenanthrene at 200 mg / L in liquid medium after 6 days of incubation was higher than 95% under the condition of 37 ~ C and 120r / min by this microbial consortium. The degradation of phenanthrene could be fitted to a first-order kinetic model with the half-life of 1.25 days. Optimal conditions for degradation of phenanthrene by consortium W4 were as follows: temperature about 37 ° C , pH from 6.0 to 7.0 and salinity about 8.0 g / L. It was concluded that the microbial consortium W4 might degrade phenanthrene via both salicylic acid and o-phthalic acid pathways by analyzing products with GC-MS.