Environmental Engineering Reference
In-Depth Information
Fig. 6.18 Removal efficiency of Cu
2+
,Ni
2+
and Co
2+
by, and loading capacity of Cu
2+
on
Mag-Im
18
. Metal ion solution/Mag-Im
18
= 10 mL/10 mg at initial solution pH 5.3
for Cu
2+
to complex with imidazolyl groups and confirms that the imidazolyl
groups on the flexible polymer chain are effective at capturing copper ions.
Selective removal of metal ions from aqueous solutions was evaluated by
loading tests from a mixture of Cu
2+
/Co
2+
solutions. In this set of experiments,
the initial concentration of Cu
2+
and Co
2+
was fixed at 0.157 mmol/L (10 ppm)
and 0.170 mmol/L (10 ppm), respectively. As shown in Fig. 6.19, the removal
Fig. 6.19 Removal efficiencies of Cu
2+
and Co
2+
by MagIm
18
from a mixture of Cu
2+
/Co
2+
solution. Metal ion solution/Mag-Im
18
= 10 mL/10 mg at initial [Cu
2+
]and[Co
2+
] concentration
of 0.157 and 0.170 mmol/L, respectively
