## Abstra& -A new fundamental approach to the formulation of mass transfer from suspended sohds to a hqutd m agttated vessels IS presented Influence of various dlmenslonless groups on mass transfer IS studled usmg the water-banzolc acid system for experimental work Results are compared w&h previou
Mass Transfer from Suspended Solid Spheres in Agitated Power Law Fluids
β Scribed by P. Lal; S.N. Upadhay
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 96 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0009-2509
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β¦ Synopsis
A knowledge of mass transfer between particulate matter and agitated nonNewtonian fluids is needed in many industrial operations such as fermentarion, microbial extraction of meta1s, polymer processing, wastewater treatment, etc. The available published literature in this area is restricted only to gas dispersions [1] where the resistance to mass transfer occurs in both continuous and disperse phases. To the best of our knowledge, the only pub1ished informarion in this field where all the resistance is confined to the continuous phase is that of Keey et al. [2], who measured mass transfer coefficients for the dissolution of o-nitrophenol spheres suspended in pseudoplastic fluids in a batch mixer. A complete understanding of the mass transfer behaviour of part1culate dispersions in agitated non-Newtonian fluids, therefore, needs additional information. We present here some preliminary results of our experimental work in this area.
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The mass transfer coefficient in covered, right-cylindrical tanks full of liquid, turbulently agitated at various speeds by turbines with six flat blades, was measured by the rate of solution of suspended solids in water and in 45% sucrose solutions. Screened crystals in the following U. S. mesh si
A theoretical analysis of the problem of free convection shows that for Schmidt numbers exceeding 100 : Nsh Q (N',)lj\* -laminar convection