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Table 2 The coded and actual values of the variables for the synthesis of cationic fibers based on Box–Behnken design

From: Conversion of lignocellulosic waste into effective flocculants: synthesis, characterization, and performance

Factors

Levels

Actual values (ml)

Low

Mean

High

Low

Mean

High

Epichlorohydrin (A)

− 1

0

 + 1

2

4

6

Triethylamine (B)

− 1

0

 + 1

8

10

12

Cellulose suspension (C)

− 1

0

 + 1

7.5

15

22.5