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

Table 1

The results of the orthogonal test.

Serial number	A	B	C	D	Results (rate removal of heavy metals (%))
					Pb	Cd	Hg	Cu	Average rate of removal
1	1	1	1	1	65.66	58.69	43.97	45.97	53.57
2	1	2	2	2	85.63	89.93	81.79	61.69	79.76
3	1	3	3	3	87.37	91.12	82.27	84.97	86.43
4	2	1	2	3	66.12	63.00	49.76	43.03	55.48
5	2	2	3	1	82.19	87.27	76.25	65.37	77.76
6	2	3	1	2	72.34	65.34	59.33	63.14	65.04
7	3	1	3	2	66.31	63.00	46.28	41.26	54.21
8	3	2	1	3	69.37	65.08	62.00	58.08	63.63
9	3	3	2	1	80.06	73.17	63.07	74.25	72.64
K1	73.25	54.42	60.75	67.99
K2	66.09	73.72	69.23	66.37
K3	63.49	74.70	72.80	68.51
	9.76	20.28	12.05	2.18