MASS TRANSFER DURING THE DISSOLUTION OF SODIUM TETRABORATE IN WATER INTENSIFIED BY MECHANICAL STIRRING
DOI:
https://doi.org/10.15421/jchemtech.v33i3.331092Keywords:
sodium tetraborate, borax, dissolution, agitation, diffusion, mass transferAbstract
The process of mass transfer during the dissolution of sodium tetraborate granules in water was investigated at temperatures ranging from 293 K to 323 K, and with agitator rotation rates of 1.67 to 6.67 s-1. The study aimed to determine the dependency of the dissolution rate on the agitator rotation rate and water temperature. An analysis of the experimentally obtained results revealed that the most significant factor influencing the intensification of the dissolution process is the increase in the solution's temperature. The phenomena of external and internal diffusion during the dissolution of sodium tetraborate granules in water under agitation were also examined. A generalized criterion equation was applied to assess the mass transfer process, considering all the investigated factors. A comparison between experimental and theoretically calculated values showed that the maximum absolute relative error did not exceed 6 %. The obtained results are valuable for further research and potential applications in the chemical industry, pharmacology, and cosmetology.
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