Table 5.

Comparison of Adsorption Capacity for Ni(II) and Cu(II) Removal for different Adsorbents.

Adsorbent	qmax (mg/g)		Ci (mg/L)	pH	T (°C)	Time h	Ref.
	Ni (II)	Cu(II)
Cell-g-AASO3H-co-AAc	112.74	109.77	200	6	30	2	[32]
CC-g-(AA-co-AM)	--	157.51	600	5	27	0.5	[35]
CE–PAANa	--	106.3	600	5		24	[37]
Cell-g-NIPAM-co-AAc	79.78	84.67	200	5	30	6	[55]
Cell-g-NIPAM-co-GMA	74.68	82.92	200	6 (Ni) 5(Cu)	30	6	[56]
Cell-g-HEMA-co-GMA	83.80	71.40	200	6	30	6	[57]
Cell-g-HEMA-co-AAc	85.32	84.82	200	5 (Ni) 6(Cu)	30	6	[59]
Cell-g-P(AN-co-AA)	153.21	147.2	200	5.5	30	8	Current work
Cell-g-P(AN-co-Sty)	139	134.42	200	5.5	30	8	Current work
Cell-g-P(AN-co-AA)	435.07	375.48	600	5.5	30	8	Current work
Cell-g-P(AN-co-Sty)	379.2	349.68	600	5.5	30	8	Current work