Identifier: imarina:9288275
Authors:
Coronas Salcedo, Alberto / Larrechi García, Maria Soledad
Abstract:
The effect of the 1,3-dimethylimidazolium chloride ([Dmim][Cl]) on the solubility of lithium bromide (LiBr) in water is analyzed. The solubility curve of ternary water/(LiBr+[Dmim][ Cl]), with 3 % and 6 % of [Dmim][Cl] in the absorbent, has been determined using a visual- polythermal method in the range from (0 to 90) ºC. To explain the role of the ionic liquid in the solubility of the LiBr, a multivariant curve resolution method was applied to near-infrared spectra of the ternary solutions and H2O/LiBr at room temperature within a wide composition range. The solubility results show that, in the range from 0.60 to 0.65 in absorbent mass faction, corresponding to the typical composition in the absorber inlet, the temperature decrease between 11 ºC and 13 ºC with 3 % of IL, and between 15 ºC and 20 ºC with 6 % of IL. Spectral calculation results show that in the ternary mixture, the amount of water that remains as bulk water in the presence of LiBr is higher than in the binary ...
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