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석유탄화수소 발효에 미치는 교반의 효과
The Effect of Agitation on Hydrocarbon Fermentation
HWAHAK KONGHAK, June 1972, 10(3), 107-112(6), NONE
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Abstract
석유탄화수소 발효에 있어 impeller의 크기와 교반속도가 교반효과에 미치는 영향을 수종의 flat-bladed turbine을 사용하여 구명하였다.
균주로는 Rhodotorula 종을 사용하였으며, 탄소수 12-14인 공업용 n-alkane을 탄소원으로 하여 28 ℃, pH 4.0∼4.5 산소공급속도 0.4 v.v.m.(Volume per volume per minute)의 조건하에서 발효를 진행하였다.
균체효율, lag phase 및 generation time은 impeller의 크기 및 교반속도에 의해 결정되는 교반소요동력에 직접 영향을 받았으며, 같은 동력입량에 대하여 generation time에 미치는 교반소요동력의 영향은 impeller의 직경이 큰 경우가 impeller blade 면적이 넓은 경우보다 효과적이었다.
균주로는 Rhodotorula 종을 사용하였으며, 탄소수 12-14인 공업용 n-alkane을 탄소원으로 하여 28 ℃, pH 4.0∼4.5 산소공급속도 0.4 v.v.m.(Volume per volume per minute)의 조건하에서 발효를 진행하였다.
균체효율, lag phase 및 generation time은 impeller의 크기 및 교반속도에 의해 결정되는 교반소요동력에 직접 영향을 받았으며, 같은 동력입량에 대하여 generation time에 미치는 교반소요동력의 영향은 impeller의 직경이 큰 경우가 impeller blade 면적이 넓은 경우보다 효과적이었다.
The effects of agitation depending on impeller geometry and agitation velocity in hydrocarbon fermentation have been studied for flat-bladed turbines in laboratory scale fermentor.
The microorganisms of Rhodotorula species were grown on n-alkane mixture of which carbon number ranged from 12 to 14 at 28 ℃, with pH range of 4.0-4.5 and at the oxygen flow rate of 0.4 of v.v.m.(vol./vol./min) in this experiment.
Cell yield, lag phase and generation time were influenced directy by power input in agitation which was determined by impeller geometry and agitation velocity for a given medium.
Even at the same power input the generation time was influenced more effectively by increasing impeller diameter than increasing blade area.
The microorganisms of Rhodotorula species were grown on n-alkane mixture of which carbon number ranged from 12 to 14 at 28 ℃, with pH range of 4.0-4.5 and at the oxygen flow rate of 0.4 of v.v.m.(vol./vol./min) in this experiment.
Cell yield, lag phase and generation time were influenced directy by power input in agitation which was determined by impeller geometry and agitation velocity for a given medium.
Even at the same power input the generation time was influenced more effectively by increasing impeller diameter than increasing blade area.