Heavy metals (μg/L) Percent of Leachate in Incubation Medium
100% 50% 30% 20% 10%
Before After Before After Before After Before After Before After
Copper (Cu) 30 30 3 7 <1 <1 <1 <1 <1 <1
Chromium (Cr) 22 21 11 12 60 60 30 40 <1 <1
Lead (Pb) <10 <10 <10 <10 <10 <10 <10 <10 <10 <10
Nickel (Ni) 350 320 170 180 100 100 70 120 100 100
Zinc (Zn) 7,930 7,290 4,230 4,300 2,640 2,640 1,600 2710 270 370
Table 3: Heavy metal removal from GPL by Chlorella incubated without shaking