Table 2 Orthogonal parameters.

From: Effect of magnetic stirring and different additives on the synthesis of zeolites from MSWI fly ash

Factor

The dosage of the optimal additive (wt%)

NaOH concentration (mol/L)

MH time (h)

MH temperature (℃)

Level 1

10

0.5

0.5

120

Level 2

20

1

1

140

Level 3

30

1.5

1.5

160

Level 4

40

2

2

180