As indicated in Table 7, for the adsorption of copper onto grapeseed
activated carbon at 298K, the kf and Q0 values which are
indicating the adsorption capacity were found as 0.19, 31.84 and
0.42, 32.15 for pH values of 2 and 5, respectively. Similar to chestnut
shell activated carbon by increasing the adsorption temperature
from 298 to 308K caused to increase these values to 0.20, 47.61 and
0.60, 48.78 for pH values of 2 and 5, respectively.