Table 4 Measurement of peroxide content and alkalinity in bleaching baths
From: Sustainable processes for pre-treatment of cotton fabric
Sr. no. | Samples | Peroxide content (mg/l) | Peroxide consumption (%) | Alkalinity (mg CaCO3/l) | Alkali consumption (%) | |
|---|---|---|---|---|---|---|
1. | Bleaching | Before treatment | 430 | 6.9 | 200 | 30 |
After treatment | 400 | 140 | ||||
2. | 1st recycle | 370 | 13.9 | 120 | 40 | |
3. | 2nd recycle | 330 | 23.2 | 80 | 60 | |
4. | 3rd recycle | 290 | 32.5 | 80 | 60 |