| Iteration |
Fe Incorporation conditions |
Fe content (mmol/g) |
% Phosphate Removal |
| Fe:EDA SAMMS (mass) |
Solvent |
Temperature (°C) |
Time (h) |
SGF, pH 1.1(b) |
SIF, pH 4.0(c) |
SIF, pH 6.5(c) |
| I [20] |
0.023 |
Water |
25°C |
1 |
0.83 |
34 ± 5 |
63 ± 2 |
14 ± 4 |
| II |
0.52 |
Water |
25°C |
1 |
0.017 ± 0.000 |
5 ± 2 |
58 ± 2 |
74 ± 1 |
| III |
0.52 |
Acetonitrile |
25°C |
1 |
0.122 ± 0.003 |
51 ± 4 |
83 ± 1 |
61 ± 2 |
| IV |
0.52 |
Acetonitrile |
65°C |
1 |
0.140 ± 0.013 |
75 ± 2 |
96 ± 1 |
98 ± 1 |
| V |
0.52 |
Acetonitrile |
65°C |
20 |
0.224 ± 0.015 |
93 ± 0 |
96 ± 1 |
93 ± 1 |
| VI |
N/A |
Acetonitrile |
65°C |
20 |
N/A |
0 ± 0 |
19 ± 2 |
8 ± 3 |
(a)Initial phosphate concentration of 3 mg phosphate/L (from KH2PO4), L/S ratio of 1000 mL/g
(b)SGF, pH 1.1, consists of 0.03 M NaCl and 0.085 M HCl
(c)SIF, pH 4.0 and 6.5, consist of 0.14 M NaCl, 0.005 M KCl, 0.008 M NaHCO3, pH adjusted with 0.1 M HCl |
