Description Usage Arguments Details Value Author(s) References Examples
Given the transport data frames of two species, the function calculates
the separation factors of the main species A against a secondary species B
for each sample taken. If the dataset of secondary species is
smaller than that of the main species (e.g. if secondary species were
determined in only half the aliquots), the transport profile is completed
using fixSecondary
function and a message will be printed.
1 |
main |
Main species transport data. Must be a data frame generated
using |
secon |
Undesired species transport data. Must be a data frame
generated using |
order |
Gives the polinomia order to be used if the secondary species information needs to be corrected due to missing data. |
mode |
Operation mode of the membranse system. Only |
plot |
Logical. If |
Separation factor for batch systems at any time different from zero is defined as
SF_{A/B}(t)=\frac{C_a/C_b}{C_a^0/C_b^0}
where C_a and C_b are the concentrations of A and B, respectively, in the strip solution at a time t, and C_a^0 and C_b^0 are the concentrations of A and B, respectively, in the feed phase at t=0 (Chen et al., 2018).
For continuous or semicontinuous systems, the separation factor is calculated according to the equation
SF_{A/B}(t)\frac{C_{a,~s}/C_{b,~s}}{C_{a,~f}/C_{b,~f}}
where C_{a,~s}, C_{b,~s} are A and B concentrations in the strip phase at a time t and C_{a,~f}, C_{b,~f} are the concentrations of A and B in the feed solution at a time t (Koros and Shimidzu, 1996). Separation factor at t=0 equals 1 indicating that no species separation has occurred yet.
Data frame with two variables: Time in the same units as provided data and SF with the separation factors at each time.
Cristhian Paredes, craparedesca@unal.edu.co
Eduardo Rodriguez de San Miguel, erdsmg@unam.mx
Q. B. Chen, Z. Y. Ji, J. Liu, Y. Y. Zhao, S. Z. Wang, J. S. Yuan, Development of recovering lithium from brines by selective-electrodialysis: Effect of coexisting cations on the migration of lithium, Journal of Membrane Science 548 (2018) 408-420. doi:10.1016/j.memsci.2017.11.040.505
J. Koros, H. Ma, T. Shimidzu, Terminology for membranes and membrane processes (iupac recommendations 1996), Pure and Applied Chemistry 68 (7) (1996) 1479-1489. doi:10.1351/pac199668071479.
1 2 3 4 5 | data(seawaterLiNaK)
sepfactor(main = seawaterLiNaK$Lithium.1,
secon = seawaterLiNaK$Sodium.1)
sepfactor(main = seawaterLiNaK$Lithium.1,
secon = seawaterLiNaK$Potassium.1)
|
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