Alkyl Thiourea Functionalised Silica for the Effective Removal of Heavy Metals from Acanthopanax senticosus Extract

Table 4

The results of the orthogonal test.

Serial number	E	F	G	K	Results (rate removal of heavy metals (%))
					Pb	Cd	Hg	Cu	Average rate of removal
1	1	1	1	1	82.07	85.13	82.31	85.95	83.89
2	1	2	2	2	80.16	79.55	78.00	79.71	79.36
3	1	3	3	3	60.07	63.08	67.33	64.93	63.85
4	2	1	2	3	85.13	89.61	72.14	73.05	80.11
5	2	2	3	1	79.39	82.18	68.66	72.37	75.65
6	2	3	1	2	79.60	73.33	61.76	67.34	70.51
7	3	1	3	2	79.88	85.06	75.64	77.08	79.42
8	3	2	1	3	92.67	95.05	82.17	84.96	88.72
9	3	3	2	1	78.69	84.38	69.12	71.65	75.96
K1	75.70	81.13	81.03	78.42
K2	75.88	81.09	78.43	76.76
K3	80.78	70.19	72.89	77.18
	5.08	10.91	8.15	1.65