Table 2. Comparison of Adsorption Capacity of the CFA/GO/WO3 Nanocomposite with Other Adsorbents Used for Pb2+ Ion Removal from Aqueous Solution.
| s. no | adsorbents | adsorption capacity (mg/g) | isotherms | reference |
|---|---|---|---|---|
| 1 | KPPa | 16.37 | Langmuir | (25) |
| 2 | MKPPb | 14.14 | Langmuir | (25) |
| 3 | fly ash from CFBCc | 51.98 | Langmuir | (34) |
| 4 | grafted-IIPd | 38.5 | Langmuir | (55) |
| 5 | RAFTP–IIPe | 53.8 | Freundlich | (55) |
| 6 | silicate porous material | 44.83 | Freundlich and Langmuir | (56) |
| 7 | GO | 35.6 | not stated | (57) |
| 8 | activated carbon | 21.2 | Freundlich | (58) |
| 9 | CFA/GO/WO3NRs nanocomposite | 41.51 | Langmuir | this study |
a
Bauhinia purpurea (Kaniar) pod powders (KPP).
b
Magnetic Bauhinia purpurea (Kaniar) powders (MKPP).
c
Circulating fluidized bed combustion (CFBC).
d
Ion imprinted polymers (IIPs).
e
Reversible addition–fragmentation chain transfer polymerization (RAFTP)–ion imprinted polymers (IIPs).