S. No
Metal
Wt. of Filter
paper
before
(gm)
Wt. of Filter
paper after
filtration
and drying
(gm)
Difference
(gm)
Efficiency of
metal
recovery
1
FeCl
3
1.244
1.271
0.027
73%
2
ZnSO
4
1.273
1.308
0.035
65%
3
Pb(NO
3
)
2
1.302
1.331
0.029
71%
4
NaF
1.242
1.285
0.043
43%
Table 6:
Calculation table for heavy and toxic metal recovery.
