Table 2 Comparison of Cr (VI) removal capacity at equilibrium treated by hollow PANI micro/nanospheres before and after regeneration
qe (the initial PANI) (mg g−1) | qe (the 1st regeneration) (mg g−1) | qe (the 2nd regeneration) (mg g−1) | |
---|---|---|---|
pH = 3 | 78.88 | 78.84 | 59.87 |
pH = 4 | 37.73 | 37.73 | 31.66 |
pH = 5 | 21.43 | 21.43 | 12.84 |