Research Article
Studies of Adsorption of Heavy Metals onto Spent Coffee Ground: Equilibrium, Regeneration, and Dynamic Performance in a Fixed-Bed Column
Table 1
Maximum adsorption capacities of heavy metals onto various adsorbents reported in literature.
| Adsorbent | (mmol/g) | pH | Ref. | Cd2+ | Cu2+ | Pb2+ |
| Amberlite IR-120 | 0.90 | 0.34 | 0.41 | NR | [26] | Dowex 50āW | 0.25 | 0.35 | 0.23 | 8 | [19] | Powdered activated carbon | 0.10 | 0.52 | 0.17 | 7 | [27] | Granular activated carbon | 0.03 | 0.08 | 0.08 | 5 | [18] | Tea waste | ā | 0.75 | 0.31 | NR | [28] | SCG | 0.12 | 0.21 | 0.32 | 4.5 | This work | Olive stone waste | 0.15 | 0.09 | 0.14 | 5 | [29] | Coffee ground | 0.10 | 0.03 | 0.24 | 5 | [30] |
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NR: not reported.
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