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- Title
A Demonstration of Reuse of Spent Dyebath Water Following Color Removal with Ozone.
- Authors
Perkins, Warren S.; Walsh, W. K.; Reed, I. E.; Namboodri, C. G.
- Abstract
Results of a project to evaluate the technical and economic feasibility of renovating spent reactive dyebath wastewater with ozone has been reported. A pilot scale study of dyebath reuse was conducted using ten commercial dye shades. Dyeings were performed in a tumbler type dye machine equipped to automatically collect the spent dyebath. Color reproducibility of the dark shades was good in water in which 50-90% of color was removed by ozonation. Dyeings of pastel colors and very bright shades required 95% or greater color removal for good shade reproduction. Ozonation was done in a continuous ozone contactor with ozone generated from oxygen. The effects of temperature and pH on decolorization of spent dyebath water with ozone were studied. Kinetics of color removal by ozone were studied. Ozone requirements to decolorize spent reactive dyebath water were measured. Decolorization of spent reactive dyebath water using ultraviolet light and hydrogen peroxide was also studied briefly.
- Subjects
WATER reuse; DYES &; dyeing; WASTEWATER treatment; INDUSTRIAL waste management; WASTE recycling; HYDROGEN peroxide; OZONIZATION; CHEMICAL reactions; ULTRAVIOLET radiation
- Publication
Textile Chemist & Colorist, 1996, Vol 28, Issue 1, p31
- ISSN
0040-490X
- Publication type
Article