Table 1: Membrane parameters and formulae used for calculation.

Membrane parametersValuesMethod

Molar flux of MV+2, , (moles/S)166.02 × 10−11Determined experimentally
Diffusivity of MV+2, , (m2/s)7.74 × 10−10Reference [10]
Concentration, , (moles/m3)5Concentration of feed solution
Membrane thickness, , (m)10−6From cross section of SEM
Pore area, , (m2)4.29 × 10−7
Membrane area exposed to solution, , (m2)3 × 10−5Exposed area of membrane to solution.
Porosity of membrane, 1.43% 100
Permeable pore density, (no. of CNTs/m2)2.3 × 1014Calculated from top view of SEM.
Calculated core diameter of CNTs, , (nm)8.9Permeable pore density = ( / )/(π /4)