Optimization of Biosorptive Removal of Dye from Aqueous System by Cone Shell of Calabrian Pine

Table 1

Taguchi L₉ (3³) orthogonal array design.

Experiment	Operating factors
	Dye concentration; (mg L^−1)	Biosorbent particle size; (µm)	Contact time; (min)
1	40	63–125	30
2	40	125–250	75
3	40	250–500	120
4	60	63–125	75
5	60	125–250	120
6	60	250–500	30
7	100	63–125	120
8	100	125–250	30
9	100	250–500	75