Removal of Methylene Blue Dye from Wastewater Using Periodiated Modified Nanocellulose

Table 1

Physicochemical properties of the WW used in the study before and after treatment.

Parameter	Before treatment	After treatment
pH	7.4 ± 0.03	7.05 ± 0.03
Color	Black	Colorless
EC (S·cm^−1)	5.08 ± 0.5	5.02 ± 0.5
COD (mg/L)	504 ± 0.2	28.9 ± 0.2
BOD (mg/L)	92 ± 0.04	60.5 ± 0.04
NO3^− (mg·N/L)	40.8 ± 0.04	0.08 ± 0.04
PO4^3− (mg·P/L)	0.4 ± 0.02	0.05 ± 0.02
SO4^2− (mg·P/L)	100 ± 0.3	45 ± 0.3
Cl^− (mg/L)	18.5 ± 0.03	0.2 ± 0.03
Mg^2+ (mg/L)	54.2 ± 0.04	4.2 ± 0.04
Cu^2+ (mg/L)	24.26 ± 0.02	1.2 ± 0.02

BOD: biological oxygen demand; COD: chemical oxygen demand.