TABLE 1.

Orthogonal experiments of binding.

	Factors				Absorption rate
	Absorbent	Time	Concentration	Temperature
1	1 (CP)	1 (15 min)	1 (20 g/L)	1 (4°C)	72.94%
2	1	2 (30 min)	2 (30 g/L)	2 (10°C)	90.47%
3	1	3 (60 min)	3 (40 g/L)	3 (20°C)	90.47%
4	2 (UWCP)	1	2	3	94.74%
5	2	2	3	1	91.04%
6	2	3	1	2	90.24%
7	3 (CC)	1	3	2	73.49%
8	3	2	1	3	80.56%
9	3	3	2	1	75.54%
I/3	84.627	80.390	81.247	79.840
II/3	92.007	87.357	86.917	84.733
III/3	76.530	85.417	85.000	88.590
Ra	15.477	6.967	5.670	8.750