Highly Efficient and Selective Capture of Pb(II) by New Crosslinked Melamine-Based Polymethyl Methacrylate for Water Treatment

Table 3

Adsorption capacities (mg/g) of C-PMMA/Mel(1–3) and removal efficiency () toward different metal ions at initial and adsorbent dose of 20 mg.

Sample	Metal ion	(mg/g)	Removal efficiency ()
C-PMMA/Mel1	Pb(II)	43.479	71.96
	Cr(III)	2.337	32.53
	Mn(II)	4.3485	12.79
	Ba(II)	8.1255	10.76
	Cd(II)	10.6115	21.84
	Ni(II)	3.592	16.61
	Zn(II)	6.665	20.17
C-PMMA/Mel2	Pb(II)	88.67	93.96
	Cr(III)	2.49	24.27
	Mn(II)	6.78	19.97
	Ba(II)	17.68	23.42
	Cd(II)	11.75	24.19
	Ni(II)	4.68	21.64
	Zn(II)	7.04	21.30
C-PMMA/Mel3	Pb(II)	38.1725	63.17
	Cr(III)	2.402	23.41
	Mn(II)	5.0525	14.86
	Ba(II)	10.916	14.46
	Cd(II)	9.4	19.35
	Ni(II)	3.926	18.16
	Zn(II)	6.2945	19.05