{"title":"Untersuchungen zur Sauerstoffdiffusion in wäßrigen Xanthanlösungen","authors":"U. Stottmeister","doi":"10.1002/ABIO.370060133","DOIUrl":null,"url":null,"abstract":"The determination of oxygen diffusion coefficients was carried out by a modified chronoamperometric method using a stationary platinum electrode. \n \n \n \nThe determined diffusion coefficients are related to approximated η0-values. \n \n \n \nIt was shown a relation of Di and η0 according to the HAYDUK-CHENG-potential equation. \n \n \n \nThat means a strong relative lowering of oxygen diffusion coefficients already by low viscosities, but a little influence at high viscosities. \n \n \n \nA simple laboratory thin film reactor is described, in which the oxygen supply is maintained by diffusion. This reactor is suitable very well for fermentations of viscous fluids.","PeriodicalId":7037,"journal":{"name":"Acta Biotechnologica","volume":"22 1","pages":"69-75"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Biotechnologica","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1002/ABIO.370060133","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
The determination of oxygen diffusion coefficients was carried out by a modified chronoamperometric method using a stationary platinum electrode.
The determined diffusion coefficients are related to approximated η0-values.
It was shown a relation of Di and η0 according to the HAYDUK-CHENG-potential equation.
That means a strong relative lowering of oxygen diffusion coefficients already by low viscosities, but a little influence at high viscosities.
A simple laboratory thin film reactor is described, in which the oxygen supply is maintained by diffusion. This reactor is suitable very well for fermentations of viscous fluids.
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