Sorption performance

Biomedical molecules are typically large molecular and weak polar materials, for which exfoHated graphite has a large sorption capacity. The sorption performance of exfoHated graphite with different bulk densities was studied on several kinds of biomedical molecules, ovalbumin, serum albumin, bovine serum albumin (BSA), lysine, and herring sperm DNA [19]. 

This throughput is adequate to compensate for the relatively slow gas inlet rate occurring during the VIP lifetime. The effect of the temperature on the sorption performance is shown in Figure 4.15 in the range 20-70 C. 

In total, 432 new sorbent formulations were prepared, partly characterised and more than 300 sorbents evaluated under realistic conditions in a three-cycle adsorption-desorption test. For the evaluation, a comparison with the K-Mg70 HTC sorbents has been made (see Figure 6.11) and four sorbent leads were selected for up-scaling and testing for sorption performance and particle stability under realistic SEWGS conditions. However, none of these four sorbents performed sufficiently well compared with K-Mg30 to justify scale up of the sorbent. 

Comparison of heavy oil sorption performance among various materials... 

Even though the sorption performance (both capacity and rate) for heavy oil mousse was a bit inferior to that of pure oil, it was experimentally demonstrated that heavy oil mousse can be recovered by using carbon materials. However, the separation of water from heavy oil mousse was not observed throughout the sorption process. 

In Table 4.16 we summarize the heavy oil sorption performance of the three carbon sorbents used by listing their sorption capacity, sorptivity as a measure of sorption rate, and the cycling processes that can be applied. Both sorption capacity and sorptivity K, depend strongly on sorbent bulk density, as shown in Figure 4.43. 

In Table 4.16 the sorption performance of some of these materials is compared to that of carbon materials. Because no quantitative rate measurements have... 

Guibal, E., Jansson-Charrier, M., Saucedo, I., and Le Cloirec, P. (1995). Enhanced of metal ion sorption performances of chitosan effect of structure on the diffusion properties. Langumuir II, 591-598. 

Chloroform sorption experiments at different temperatures have shown that if the relative pressure of chloroform is high enough, a, y, 5, and e phases are transformed into SPS/CHCI3 co-crystalline phases while the p phase remains unaltered [172]. Moreover, at low chloroform activities, SPS/CHCI3 co-crystalline phases are achieved only starting from the nanoporous 5- and e-forms. Experimental analyses of chloroform sorption, performed using in situ FTIR spectroscopy, have also allowed a quantification of the amount sorbed into the amorphous and nanoporous crystalline phases [120]. 

Dambies, L Vincent, T Guibal, E. Treatment of arsenic-containing solutions using chitosan derivatives uptake mechanism and sorption performances. Water Research, 2002, 36, 3699-3710. 

Recently, Mi et al. (2002) proposed a new method for the preparation of porous chitosan beads via a wet phase-inversion method. Delval et al. (2003) prepared porous crosslinked starch by generating gas bubbles within the material during S5mthesis. The size of sorbent particles has also been shown to be a key parameter in the control of sorption performances [30, 43, 166]. 

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