Table 4 Comparisons of adsorption capacity of various carbon materials for Pb(II)
Adsorbent | Adsorption capacity (mg/g) | pH | References |
|---|---|---|---|
Activated carbon prepared from cotton stalk | 119 | 4.5 | Li et al. (2010) |
Activated carbon from hazelnut husks | 13.05 | 6.7 | Imamoglu and Tekir (2008) |
Na2S·HNO3 modified activated carbon | 129.5 | 6 | Qin et al. (2011) |
Peanut shell activated carbon | 35.5 | 2.5 | Xu and Liu (2008) |
Activated carbon developed from apricot stone | 21.38 | 6.0 | Mouni et al. (2011) |
Carbon nanotubes | 102.04 | 5 | Kabbashi et al. (2009) |
Activated carbon prepared from coconut shell | 26.50 | 4.5 | Sekar et al. (2004) |
Coal-based activated carbon | 162.33 | 5.0 | This study |