518
P. S. Das et al.
Fig. 4 EDAX spectra of CAMHNPL samples (Inset Spot from where EDAX spectra is taken)
3.1.5 ICP-AES Studies
The initial concentration C(I) of Cu(II) in untreated Cu(II) solution each of 1 L
volume and final concentrations C(F) of all the 100 mg MHNPL 20 min treated
Cu(II) 1 L solutions (i.e., S1, S2, S3, S4, and S5) are shown in Fig. 5a and its inset,
respectively. The corresponding Cu(II) ion removal efficacies of MHNPL for the
solutions S1, S2, S3, S4, and S5 are shown in Fig. 5b.
The ICP-AES derived (Das et al. 2017) results presented in Fig. 5a, b confirm that
the Cu(II) ion removal efficacies of the MHNPL samples are 99.67, 99.83, 99.99,
99.84, and 99.76% respectively, for the solutions S1, S2, S3, S4, and S5. Thus, the
MHNPL samples synthesized in the present work exhibit the most consistent Cu(II)
ion adsorption efficiency of more than 99%. The efficiency ranges from, e.g., 99.67
Fig. 5 Cu (II) ion removal efficacies of MHNPL samples as a function of solution number
a Variation of C(I) and C(F) (Inset) and b Efficiency (%)