Semi-empirical model for calculating the viscosity of KF aqueous solution

The article proposes the study of semi-empirical and mathematical models to determine the viscosity in mPas units for brine in aqueous solution KF for concentrations in the range between 0 and 12 molal and with a temperature in the range between 278.15-328.15 K. Throughout this current research work; we proved that the viscosity, say η = η(m, T) associated with the salt KF dissolved in pure water may be expressed as a continuous of both the molar concentration (m) and the temperature T, to give an explicit function, as given below:

η[m, T] = η0[T] . (1 + A[T]m + B[T]m² + C[T]m³ + D[T]m⁴ + E[T]m⁵ + F[T]m⁶)

Where the parameters A[T] F [T] corresponds to the power series. The mathematical model presents for binary brine KF an adjustment with a %AAD error of 0.15%, achieving a high capacity to reproduce and interpolate experimental data. This calculation model is strong enough to be tested for more complex systems.