Research Article
Cadmium Removal from Aqueous Systems Using Opuntia albicarpa L. Scheinvar as Biosorbent
Table 1
Cadmium removal by biosorption.
| Bioadsorbent | [Cd]i (mg L−1) | Sorption capacity (mg/g) or removal efficiency (%) | Experimental conditions | Reference |
| Rice husk | 11.24 | 26.73 | [B] = 500 mg L−1 = 25°C pH = 2.0–6.0 | [13] |
| Olive tree pruning waste | 1–10 | 36.6 | [B] = 100 mg L−1 pH = 5.5 = 21 ± 0.4°C = 120 min | [14] |
| Dried cladodes (Opuntia ficus) | 30–300 | 12.07–30.42 10.5–36.7 | [B] = 500–4000 mg L−1 pH = 2.3–6.5 = 25–60°C | [15] |
| Dehydrated nopal (DHN) of Opuntia albicarpa L. Scheinvar | 1.6 | 0.14–0.275 8.1–35.2 | [B] = 500–1000 mg L−1 pH 4.0 | This study |
| Thermally treated nopal (TN) Opuntia albicarpa L. Scheinvar | 1.6 | 0.39–0.23 22.3–53.3 | [B] = 500–2000 mg L−1 pH 4.0 | This study |
|
|
[Cd]: initial cadmium concentration, [B]: dosage of biosorbent.
|