Removal of dissolved gases from liquids by vacuum sublimation
1929; Volume: 3; Issue: 1 Linguagem: Inglês
10.6028/jres.003.013
ISSN2376-9815
Autores Tópico(s)Chemical and Environmental Engineering Research
ResumoA method of removing and collecting dissolved gases from liquids is described.It is possible, through the application of the principle of vacuum sublimation, to prepare gas-free liquids for use in the determination of physical constants without appreciable loss of either liquid or dissolved gas.Experimental results are presented which demonstrate the practicability of the method as well as its theoretical limitations. CONTENTSPage I. Introduction 97 II.Theory 98 III.Description of apparatus 99 IV.Method of operation 100 V. Experimental results 101 1.Purification of water, Part I, HN 3 as the impurity 101 2. Purification of water, Part II, HC1 as the impurity 102 3. Purification of water, Part III, 2 as the impurity 103 4. Purification of water, Part IV, C0 2 as the impurity 103 VI.Summary 104 I. INTRODUCTIONThe complete removal of dissolved gas from a liquid is usually the final step in the purification of the liquid for the purpose of determining certain of its physical properties.Removal by chem- ical means is often impracticable, particularly in the case of the gases of the atmosphere.The collection of the dissolved gas for analytical purposes is also of importance, for example, in determinations of gas solubilities.The general physical method of purification described below not only permits the complete removal of the dissolved gas, in most cases, but also allows an approximately complete recovery of both the gas and liquid.The various methods described in the literature fall into four categories-those employing vacuum, 1 those employing heat, 2 those
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