プルラン培養液のろ過特性 : プルラン培養液の流動特性に関する研究(第2報)

概要

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A constant pressure filtration was carried out to investigate the filtration characteristics of pullulan broth. To accelerate filtration, 8% (w/w) of a filter aid was used. The true specific filtration resistance for the pullulan broth could not be decided by Ruth's plot for Newtonian fluid with solid.A modified filtration equation for non-Newtonian fluid with solid based on that of Kozicki et al. has been derived and used to analyse the results of constant pressure filtration of the pullulan broth with filter aid. The average specific resistance of filter cake γ could be determined from a linear relationship between (dθ/dυ)^n and υ, where n was the flow behavoir index of filtrate.The average specific resistance here is a function of the flow resistance of Newtonian fluid, the flow behavoir index of filtrate and the coefficint depended on the shape of cross section of flow path. But this could be practically represented only as a function of the pressure as in constant pressure filtration of Newtonian fluid.It is concluded that the analytical procedure reported here will be useful in analysis of the filtration characteristics of non-Newtonian fluids sometimes observed in fermentation broths.
社団法人日本生物工学会の論文
1976-09-25