Compound imbibition

When the fiber content of the bagasse reaches about 50 percent, extraction by conventional milling approaches zero. Because the juice that remains with the fiber contains the same proportion of sucrose as the original juice of the cane, the yield of sugar would be substantially lowered if extraction were terminated at that point. Consequently, a process called compound imbibition is used to reduce the sucrose in the fiber by repeated dilution and milling. In a five-mill tandem,... 

In the first instance, the roots of planta may take up all substances in solution without selection. But this action is not one of simple imbibition as in the case of sponges. Liebig-, in a recent memoir, maintains that the spongioles, in obtaining their supply of saline matter, exert a real decomposing action on certain Ill-defined compounds, which the saline mattar forms with the. insoluble constituents of the soil, Those substances which are conveyed to planta in solution are retained in greater or less quantity, or are entirely rejected when not fit For assimilation. 

Keywords gas-solid reaction, acetone gas imbibition, inclusion compounds, desorption temperatures... 

The ground host (2.00 mmol) was evacuated in a 250-mL flask that was connected at a vacuum line to a second 250-mL flask containing 2 mmol (for 4 3 mmol for 5 and 6 6 mmol) acetone. After 1 h at room temperature excess gas was condensed into flask 2 and the inclusion product evacuated for 1 h at 5 xlO 4 Torr. The table gives the molar ratio, the C=0 IR frequency of the included acetone, the desorption temperature (from TGA experiments), and the comparison with the molar ratio that was obtained from crystallization of the complex in liquid acetone. Below the imbibition ratios the acetone gas was completely taken up within detection limits. Exhaust gases required column flow systems for removal of acetone as an inclusion compound. 

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