Table 1 Comparison among MWCNT porous membranes reported in the literature and in this work for the removal of toxic metals.
Membrane | PWP (L m−2 h−1 bar−1) | Metal ion | Removal (%) | Reference |
PES/ED-MWCNT (0.6 wt%) | 8.05 | Pb Ni Cu Zn | 90.5 90.7 91.9 96.7 | |
PEI/PDAMWCNTs/TMC (M4) | 15.32 | Cu Zn | 90.5 93.0 | |
f-CNT | 44 | Zn | 98 | |
MWCNTs/chitosan-carrageenan | 180 | Pb Cu | 91 94 | |
P-CNT | 44 | Zn | >98 | |
HPEI-MWCNT/PES | 75.7 | Pb Ni Cu Zn | 93.39 94.63 95.84 99.06 | |
0.3 wt% of MWCNTs (PCNT-3) | 185 | Pb | >98 | |
CNTs-COOH/CHIT/PS | 64.4 | Cu Ni Pb Cd Co | 71–92.2 | |
PEI-grafted-MWCNT-Zn | 16.5 | Zn | 73 | |
CQACNT-6 | 312.8 | Pb Ni Cu Zn | 89.53 90.42 91.43 91.86 | This work |
