Heavy metals Dilution of leachate
100% 50% 30% 20% 10%
Copper (Cu) 96.7 Not detected Not detected Not detected
Chromium (Cr) 43.5 0 60 33.3
Lead (Pb) Not detected Not detected Not detected Not detected Not detected
Nickel (Ni) 33.3 0 22.2 0 85
Zinc (Zn) 36.6 0 41 89.7 99.4
Table 5: Percent removal heavy metals from GPL compared to the controls (in the light and under shaking conditions)