Waste-Tire-Derived Activated Carbon as Efficient Adsorbent of P-Nitrophenol from Wastewater

Table 2

The elements C, N, H, and O are present in five kinds of RAC.

Sample	Impregnation ratio	Ya (%)	Elemental analysis (wt.%)					Atomic ratio
			N	C	H	O	Ash		H/C	O/C	(N + O)/C
650-0	—	78	0.420	74.72	1.177	5	16.454		0.02	0.07	0.07
650-1	1:1	63	0.380	81.03	4.286	5.41	7.38		0.03	0.13	0.14
650-2	1:2	54	0.640	79.01	1.587	8.49	7.878		0.02	0.11	0.12
750-1	1:1	61	0.460	40.26	2.275	23.55	31.492		0.06	0.58	0.60
750-2	1:2	52	0.800	42.47	1.28	23	30.179		0.05	0.28	0.29

The yield equation is shown below [22].