Recovery, particle

Albertsson (Paiiition of Cell Paiiicle.s and Macromolecules, 3d ed., Wiley, New York, 1986) has extensively used particle distribution to fractionate mixtures of biological products. In order to demonstrate the versatility of particle distribution, he has cited the example shown in Table 22-14. The feed mixture consisted of polystyrene particles, red blood cells, starch, and cellulose. Liquid-liquid particle distribution has also been studied by using mineral-matter particles (average diameter = 5.5 Im) extracted from a coal liquid as the solid in a xylene-water system [Prudich and Heniy, Am. Inst. Chem. Eng. J., 24(5), 788 (1978)]. By using surface-active agents in order to enhance the water wettability of the solid particles, recoveries of better than 95 percent of the particles to the water phase were obsei ved. All particles remained in the xylene when no surfactant was added. 

Figure 52. Plot reported by Arterburn on particle diameter vs. particle recovery for hydroclone applications.

Particle recoveries calculated according to equation (9) for our samples indicated essentially 100 recoveries for the 85, 98 and 109 nm samples. However, the recovery for the I83 nm sample was only hl%. 

Given the random nature of FDR deposition and particle recovery there is insufficient evidence to draw any conclusions from this test, although the presence of water does not appear to have a noticeable detrimental effect. 

Figure 2. Effect of Superficial velocity on particle recovery for various particle diameter at a surfactant concentration of 1 mM SLS.

Caprolactam hydrogenation, 576,577 Cartridge filters, 319 applications, 323 particle recovery range, 323 Catalyst bed support modes, 587 Catalysts... 

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