Table 6 Adsorption capacities of equine bone-derived hydroxyapatite (HA-100, HA-500, and HA-900).
Sources types | pH | Initial Pb2+ concentration (mg/L) | Adsorbent dosage (g/L) | Contact time (min) | Removal efficiency (%) | References |
|---|---|---|---|---|---|---|
Our study | 9 | 100 | 0.25 | 180 | HA-500 = 99% | |
HAp derived from chicken bone | 3 | 208 | 1 | 30 | > 99 | Huawei Wang et al. (2020)43 |
HAp derived from chicken bone | 5.5 | 50 | 1,25 | 120 | > 95 | Xiaofei Liu et al. 202344 |
HAp derived from fish bone | 8 | 25 | 60 | 99 | Sabrina Mostofa et al. 202245 |
