qt Adsorption capacity
qe Equilibrium adsorption capacity
C0 Concentration of the adsorbate
Ct Concentration of the dye at time t
mMOF Loading ratio of the MOFs in the adsorber
V Volume of the dye solution
\(\varphi_{i}\) Loading ratio of the MOFs in the adsorber
mi Total mass of the membrane adsorber
m0 Mass of the pristine PES membrane
k1 Adsorption rate constant of the pseudo-first-order kinetic
k2 Adsorption rate constant of the pseudo-second-order kinetic
kd Adsorption rate constant of the inter-particle diffusion model
SBET BET surface area
Vt Total pore volume
Vmeso Mesopore volume
Vmicro Micropore volume