Comparison Of Different Surfactants On The Quality Of Ozone Bleached Fabric
By: Kainat Jamshed (2011-VA-755)
| Dr. Fariha Arooj.
Contributor(s): Dr. Saif Ur Rehman Kashif | Mr. Haroon Jamshaid Qazi.
Material type: 
BookPublisher: 2017Description: 48p.Subject(s): Environmental SciencesDDC classification: 2913-T Dissertation note: This study shows that the raw cotton fabric can be successfully bleached by using surfactant in a ozone bleached bath. Surfactants apparently carry out a lot of functions which increases the reaction rate of ozone. Surfactants help in decreasing bubble size which make ozone more soluble in water, thus decreases the surface tension between fabric and water. Raw fabric was successfully bleached in the presence of maximum ozone doze 10 g/hour for 40 minutes in 150 mL of distilled water. Three types of surfactants (anionic, cationic and nonionic) were analyzed at the constant initial pH 5. Acidic environment improves the result by increasing the whiteness, absorbency and strength of the fabric. The best result was observed at 0.01mL of surfactant concentration due to low micelle concentration in the aqueous medium. In comparison with cationic and nonionic surfactants anionic shows the best outcome in terms of whiteness (64.53%), strength (96.84lb) and absorbency (1.07 sec). Treated effluent analyzed in terms of Chemical Oxygen Demand, Turbidity, Conductivity, Total Dissolved Solids and Total Suspended Solids, clearly indicated that ozone treatment along with surfactants was an efficient technique with respect to the conventional agents being utilized for bleaching.
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Thesis
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UVAS Library Thesis Section | Veterinary Science | 2913-T (Browse shelf) | Available | 2913-T |
This study shows that the raw cotton fabric can be successfully bleached by using surfactant in a ozone bleached bath. Surfactants apparently carry out a lot of functions which increases the reaction rate of ozone. Surfactants help in decreasing bubble size which make ozone more soluble in water, thus decreases the surface tension between fabric and water. Raw fabric was successfully bleached in the presence of maximum ozone doze 10 g/hour for 40 minutes in 150 mL of distilled water. Three types of surfactants (anionic, cationic and nonionic) were analyzed at the constant initial pH 5. Acidic environment improves the result by increasing the whiteness, absorbency and strength of the fabric. The best result was observed at 0.01mL of surfactant concentration due to low micelle concentration in the aqueous medium. In comparison with cationic and nonionic surfactants anionic shows the best outcome in terms of whiteness (64.53%), strength (96.84lb) and absorbency (1.07 sec). Treated effluent analyzed in terms of Chemical Oxygen Demand, Turbidity, Conductivity, Total Dissolved Solids and Total Suspended Solids, clearly indicated that ozone treatment along with surfactants was an efficient technique with respect to the conventional agents being utilized for bleaching.
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