Table 2.
Experimental conditions during service cycle of Zn capturing onto Na-zeolite and regeneration cycle for recovering of zeolite bed
| Cycle no |
Service cycle | Regeneration cycle | |||
|---|---|---|---|---|---|
|
c0(Zn) mmol/L |
H, mm |
Q, mL/min |
cR, mmol/L |
Q mL/min |
|
| 1st | 1.067 | 120 | 1.0 | 105.60 | 1 |
| 2nd | 1.067 | 120 | 1.0 | ||
| 3rd | 1.067 | 120 | 1.0 | ||
| 4th | 1.787 | 120 | 1.0 | ||
| 5th | 0.770 | 80 | 1.0 | ||
| 6th | 1.083 | 80 | 1.0 | ||
| 7th | 1.083 | 40 | 1.0 | ||
| 8th | 1.051 | 40 | 2.0 | ||
| 9th | 1.054 | 40 | 3.0 | ||
where: c0 – the influent zinc concentration in solution (mmol/L), H – the fixed bed depth of zeolite (mm), Q – the flowrate of solution (mL/min), cR – the concentration of regeneration solution (mmol/L)