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. 2019 Mar 1;9:3232. doi: 10.1038/s41598-019-39035-2

Table 4.

Cost of some of the compared sorbents.

Adsorbent Cost (USD/kg) Reference
Granular activated carbon 1.44 80
Commercial activated carbon 4.00 81
Iron oxide 2.07 82
Sand 0.009 83
Kaolinite 0.12 84
Montmorillonite 0.044–0.36 84
Halloysite 0.2–0.5 81, 85
1Fe-HNT 0.33–0.63 This study