Research Article
Adsorption of Heavy Metals on Bentonitic Soil for Use in Landfill Liners
Table 7
Comparison of the cationic heavy metal adsorption capacities of various adsorbents.
| Adsorbent | Heavy metal | b (mg/g) | Reference |
| Acid-activated clay | Ni | 0.44 | [75] | Bentonite clay from Bhawnagar, India | Pb | 19.45 | Khan et al., [76] | Bentonite | Ni | 13.97 | [77] | Bentonite | Ni | 26.32 | [78] | Bentonite | Cu | 17.87 | Bofe bentonite clay | Zn | 0.77 | Araújo et al., [36] | Magnetic bentonite | Pb | 80.40 | Zou et al., [79] | Bagasse fly ash | Cd | 1.24-2.0 | Ahmaruzzaman [80] | Magnetic oak wood biochar | Cd | 2.87 | Mohan et al. [81] | Treated olive stones | Cd | 49.3 | Aziz et al. [82] | Magnetic litchi peel | Pb | 78.74 | Jiang et al. [83] | Commercial activated carbon | Pb | 42.50 | Shahrokhi-Shahraki et al. [84] | Cu | 15.00 | Zn | 14.00 | Natural zeolite | Cu | 0.11 | Motsi et al. [85] | Zn | 0.02 | Activated carbon from rice husk | Ni | 17.23 | Ma et al. [86] | Cd | 29.61 |
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