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- Title
Renovation of Dyebath Water By Chlorination or Ozonation.
- Authors
Perkins, Warren S.; Judkins Jr., Joseph F.; Perry, William D.
- Abstract
The renovation by chlorination to render dyebath water suitable for repeated dyeing of polyester with disperse dyes, nylon with acid dyes or cotton with reactive dyes was successfully demonstrated in the laboratory. Difficulties were encountered in the repeated use of chlorinated water to apply direct dyes. These difficulties were attributed to the neglect of control of salt concentration in the series of direct dyeings and to the presence of sodium nitrite and/or other substances which interfered with the decolorization of the dyes by chlorine. Salt concentration in the recycled water can be monitored by measurement of conductivity of the water and adjusted as necessary. This technique was used to control salt concentration in a series of successful reactive dyeings. Chlorinated water which had been previously used to apply reactive dyes was suitable for acid dyeing but unsuitable for dyeing with disperse and direct dyes because of the high concentration of salt present in the water. Chlorinated water which had previously been used to apply direct, acid or disperse dyes was suitable for application of any of the four dye classes studied.
- Subjects
DYE industry; REACTIVE dyes; CHLORINATION; WATER reuse; DYES &; dyeing; COTTON dyeing; NYLON dyeing
- Publication
Textile Chemist & Colorist, 1980, Vol 12, Issue 9, p64
- ISSN
0040-490X
- Publication type
Article