Account

Table 3 Copper removal efficiency under different dosages (0.05–0.08 g) The letters difference a-g indicate the level of significant differences in copper removal efficiencies at varied dosage (p<0.0001).

From: Adsorptive Removal of Copper (II) Ions from Aqueous Solution Using a Magnetite Nano-Adsorbent from Mill Scale Waste: Synthesis, Characterization, Adsorption and Kinetic Modelling Studies

Time	Dosage
Time	0.05 g	0.2 g	0.5 g	0.8 g
0	0.00^f	0.00^f	0.00^g	0.00^g
5	17.67^e	30.56^d	7.15^f	7.03^f
15	43.18^d	31.27^c	11.34^e	8.46^e
30	49.30^c	36.52^b	14.31^d	10.07^d
60	55.10^b	37.27^a	21.82^c	11.56^c
120	62.58^a	37.44^a	38.73^b	13.26^b
180	62.61^a	37.43^a	40.43^a	24.31^a
240	62.62^a	37.23^a	40.29^a	24.30^a
p value	< .0001	< .0001	< .0001	< .0001

The letters indicate the level of significant and differences in the removal efficiencies of Cu2⁺

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