Research Article
Fabrication of Electrospun Polyamide-6/Chitosan Nanofibrous Membrane toward Anionic Dyes Removal
Table 1
Levels of different independent variables in coded and actual forms.
| Independent variable | Range and levels | −α (−2) | −1 | 0 | +1 | +α (+2) |
| A: solution pH | 3 | 5 | 7 | 9 | 11 | B: initial dye concentration (mg/L) | 25 | 50 | 75 | 100 | 125 | C: electrospinning time (hr) | 1 | 2 | 3 | 4 | 5 | D: chitosan ratio (%) | 0 | 10 | 20 | 30 | 40 |
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