Table 2.
Comparison of the adsorption capacities of various pectin-based adsorbents for Pb2+ adsorption.
| Adsorbents | pH | Temperature (K) | qmax (mg/g) |
References |
|---|---|---|---|---|
| Pectin microspheres | 5.0 | 298 | 325 | [46] |
| Pectin-based polymer hydrogel | 5.5 | 298 | 130 | [47] |
| Pectin-graft-poly(METAC-co-AMPS)/MMT-C2 | - | 298 | 79.78 | [48] |
| Pectin/activated carbon-based porous microsphere | 5.0 | 298 | 279.33 | [49] |
| Pectin-rich fiber | - | 298 | 184 | [50] |
| HHP-assisted pectinase modified pectin | 7.0 | 298 | 263.15 | [51] |
| PPEAs | 5.0 | 298 | 373.7 | This study |
METAC: 2-(methacryloyloxyethyl) trimethylammonium chloride, AMPS: 2-acrylamido-2-methyl-1-propane sulfonic acid, MMT: composite with montmorillonite, HHP: high hydrostatic pressure. A hyphen in the pH column means no mention was made of the pH in the research.