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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
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