Table 1 Independent parameters and their values for the experimental design.

From: Green and sustainable synthesis of MWCNT@g-C₃N₄@Ag photocatalyst from PET for efficient wastewater treatment

Parameter

Symbol

-α

-1

0

+ 1

+α

pH

X1

5

6

7

8

9

MB concentration (mg/L)

X2

10

12.5

15

17.5

20

Photocatalyst dosage (g/L)

X3

0.3

0.4

0.5

0.6

0.7

Time (min)

X4

120

150

180

210

240

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