Table 1.

Experimental methods in this study.

Set	Experiment factors	pH value	CS content(g)	Reaction time (min)	Original content (mg/L)
1	Effect of pH value	1/3/5/7 9/11/13	0.05	90	100
2	Effect of CS dosage	7	0.025/0.050/0.075/ 0.1/0.125/0.15	90	100
3	Effect of reaction time	7	0.05	5–180	100
4	Effect of initial concentration	7	0.05	90	50/75/100 125/150
5	Adsorption kinetic	7	0.05	5–180	50/100/150
6	Adsorption isotherm	7	0.05	90	50/75/100 125/150