Bioresources and Bioprocessing

Table 3 Coded levels of factors in the experiments suggested by Box–Behnken design

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

Run	Coded levels of the factors^a
Run	A	B	C
1	− 1	+ 1	0
2	− 1	0	+ 1
3	0	− 1	− 1
4	+ 1	+ 1	0
5	− 1	− 1	0
6	0	+ 1	− 1
7	+ 1	0	− 1
8	+ 1	− 1	0
9	0	+ 1	+ 1
10	0	0	0
11	0	− 1	+ 1
12	0	0	0
13	− 1	0	− 1
14	0	0	0
15	+ 1	0	+ 1

^aA epichlorohydrin, B triethylamine, C cellulose suspension

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