qt | [mmol/g] | adsorption capacity of resin at time t |
C0 | [mmol/L] | initial concentration |
V0 | [L] | initial solution volume |
Cn | [mmol/L] | remaining solution concentration |
Vn | [L] | remaining volume |
Ci | [mmol/L] | taken solution sample concentration |
Vi | [L] | taken solution sample volume |
W | [g] | resin weight |
| [mmol/g] | equilibrium adsorption capacity for adsorbent |
| [mmol/g] | adsorption capacity for adsorbent at time t |
| [g/mmol・h] | rate constant for the Lagergren equation |
| [g2/mmol2・h] | rate constant for the pseudo-second order equation |
h1 | [1/h] | initial rate of pseudo-first order equation |
h2 | [1/h] | initial rate of pseudo-second order equation |
| [mmol/g・h] | initial adsorption rate of Elovish equation |
| [g/mmol] | desorption constant |
F | [%] | ion exchange degree |
R2 |
| correlation coefficient |
Ea | [kJ/mol] | activation energy |
| [J/mol・K] | activation entropy change |
K | [J/K] | Boltzmann constant |
h |
| Plank constant |
| [mmol/g・min0.5] | internal diffusion rate constant |
C |
| intercept |
r0 | [cm] | particle radius |
| [cm2/min] | pore diffusion coefficient |
| [cm2/min] | film diffusion coefficient |
| [cm] | film thickness |
| [min] | time for reaching halfway of adsorption capacity |
| [mmol/L] | solute quantity adsorbed by adsorbent particles |
Subscripts | ||
cal | calculated | |
exp | experimental |