Research Article

Removal of Heavy Metals from Drinking Water by Magnetic Carbon Nanostructures Prepared from Biomass

Table 4

Thermodynamics parameters for the adsorption of heavy metals on carbon nanostructures prepared from watermelon waste.

Heavy metals
25°C30°C35°C40°C45°C

Arsenic−4.092629.156−8.69−8.84−8.98−9.149.28
Chromium−9.51255.742−16.62−16.90−17.18−17.46−17.74
Copper−10.79554.387−16.22−16.49−16.77−17.04−17.31
Lead−14.72161.258−18.27−18.58−18.89−19.19−19.50
Zinc−16.64570.944−21.16−21.52−21.87−22.23−22.58