Quality Aspects Related to Preparation, Dyeing, and Finishing of Cotton Knits

Cotton knit defects can frequently be traced back to an earlier processing stage or to the fiber. Three defects related to fiber are barre, immature fiber, and metal content. Barre can be caused by numerous factors. Methods to analyze the cause include flat table examination, background light source, light source observation, atlas streak..

Use of High-Frequency Energy for Activation of Finishing and Dyeing of Textiles

High frequency energy treatment, or so-called dielectric heating, differs from conventional methods used in finishing and dyeing, including convective and contact methods of heating, particularly in its high speed, uniformity of heating, and efficiency. Because fibers vary in their ability to be processed by high frequency energy treatmen..

Measurments of Cotton Properties with Regard to Textile Finishing

The morphology and porosity of cotton fibers have a sinificant influence on their dyeability. Dyeability, however, which depends on fiber variety and maturity, changes according to the type and conditions of the finishing process. To help finishing plants

Effect of Pigments on the Photooxidative Degradation of Polypropylene Fibres

An experiment investigating the lightfastness of plypropylene (PP) fibers colored with organic and inorganic pigments assessed fiber degradation on the basis of strength and elongation losses resulting from exposure to light under a xenon tube and evaluat

Water and Salt Reuse in the Dyehouse

To held dyeing and finishing plants decolorize and purify mill watewater, researchers designed a series of chemical and mechanical unit operations to recycle water and salt and eliminate color and heavy metals discharge. The system uses Fenton's reagent, which can completely decolorize complex textile wastewater via oxidative destruction ..

Peracetic Acid in Textile Processing. Part 4: Oxidative Decoloration of Dyehouse Water with Peracetic Acid and UV Light

Researchers used online spectrophotometry to examine the oxidative decolorization of dyehouse water with equilibrium peracetic acid or hydrogen peroxide and ultraviolet radiation (UV). The addition of an oxidant reduced the minutes (hydrogen peroxide) and

Improvement of Anaerobic Degradation of Partial Streams from Textile Processing Effluent Via Ozone Treatment

Anaerobic treatments may be suitable for separating high load waste streams from the collective effluent of textile finishing plants. Researchers analyzed the composition and properties of textile wastewater, focusing on the anaerobic degradability of the various polymers used in sizing and printing as well as the influence of auxiliaries..

Biological Renovation and Reuse of Spent Reactive Dyebaths.

Researchers plan to create a low cost anaerobic, fixed film bioreactor system for dyebath effluents that removes color, conserves water and salt, and reduces wastewater. They are testig nine commercial reactive dyes with an anaerobic, methanogenic culture enriched from municipal sewage sludge. They have successfully observed the kinetics ..

Recycling Dyehouse Waste Water Via Nanofiltration

Researchers investigating the viability of nanofiltration as an alternative to conventional treatments of dyehouse wastewater examined the performance of filtration test units incorporating nanofiltration membranes from different manufacturers. The membra

Successful Implementation of Membrane Technology in Dye Wastewater Recycling

A pilot testing program conducted at a textile plant evaluated the performance of several types of cross flow membranes. The program used ultrafiltration, nanofiltration, and reverse osmosis membrane systems to process wastewater from a fabric dyeing oper