Table 5: Comparison of adsorption capacity of various adsorbents for Cu(II) and Cd(II).

AdsorbentAdsorbent capacity (mg/g)
Cu(II)Cd(II)Reference

Lentinus edodes pellets78.6[36]
Activated pine bark30.21[37]
Black gram husk39.99[26]
Orange peel3.19[38]
Sawdust3.12[38]
Bagasse2.89[38]
Papaya seed3.9[39]
Raw date pits7.406.02This study
Activated date pits33.4417.24This study