From: Adsorptive removal of heavy metals from wastewater using Cobalt-diphenylamine (Co-DPA) complex
S/N | Type of adsorbent | Time | Metal concentration | Amount of adsorbent | Removal efficiency | References |
---|---|---|---|---|---|---|
1 | {[Cd1.5(btc)(bibp)·2H2O] H2 O}n | 120 min | 1000 ppm | 10 mg | Pb(II) (53.9%) and Cr(VI) (73.8%) | [57] |
2 | α-cellulose/chitosan | 60 min | 60 ppm | 1.0 g | Cr(II) (56%), Pb(II) (85%) and Cd (94%) | [58] |
3 | Non-cytotoxic and magnetic cobalt ferrite nanoparticles | 30Â min | 450Â ppm | 0.1Â g | Pb(II) (82%) | [59] |
4 | Magnetic activated carbon–cobalt nanoparticles | 30 min | 500 ppm | 0.1 g | Pb(II) (90.6%) | [60] |
5 | Faujasite zeolite decorated with cobalt ferrite nanoparticles | 12Â h | 140Â ppm | 1Â g | Pb(II) (98.4%) | [61] |
6 | Multifunctional cobalt oxide nanocomposites | 140Â min | 350Â ppm | 2.8Â g | Pb(II) (86.89%) and Cd(II) (82.06%) | [62] |
7 | Polypyrrole functionalized, Cobalt oxide Graphene | 120Â min | 400Â ppm | 0.01Â g | Pb(II) (93.08%) and Cd(II) (95.28%) | [63] |
8 | Cobalt ferrite nanoparticles | 60Â min | 400Â ppm | 0.1Â g | Pb (96%) | [64] |
9 | Organosulphur-modified biochar | 300Â min | 50Â ppm | 100Â mg | Cd(II) (88%) | [65] |
10 | Activated carbon cobalt composite | 20Â min | 450Â ppm | 0.1Â g | Pb(II) (85%) | [60] |
11 | Cobalt ferrite nanoparticles | 30Â min | 150Â ppm | 10Â g | Cr(IV) (50.9%) | [66] |
12 | Co-DPA | 80Â min | 60Â ppm | 3Â g | Cr(II) (99.5%), Pb(II) (99.5%) and Cd (95.6%) | This study |