Application of Spent Li-Ion Batteries Cathode in Methylene Blue Dye Discoloration

Table 1

The experimental conditions used in the reaction order study of MB discoloration. The variables were spent cathode (SC) area and H₂O₂ and MB concentration.

	Condition 1	Condition 2	Condition 3	Condition 4
	SC = 16 cm^2	SC = 16 cm^2	SC = 4 cm^2	SC = 16 cm^2
	[H2O2] = 0.1 M	[H2O2] = 0.01 M	[H2O2] = 0.1 M	[H2O2] = 0.1 M;
	MB = 12 ppm	MB = 12 ppm	MB = 12 ppm	MB = 6 ppm
	60 s	67 s	242 s	32 s