Effluent treatment and process optimization in tow dyeing (German)

Effluent treatment at a top-dyeing works is described. The dye-works processes about 15 t top daily, of which about 10 t is wool top. The treatment comprises sedimentation, precipitation, flocculation and neutralization. The dye liquor is recycled. Water consumption is reduced from 70 to 20 1/kg substrate and there is a saving in textile ..

Decolorisation of dyes by electrochemical process: application to the case of Guichard and Co.effluents (French) (Decoloration d'effluents de teinture de textile par un procede electrochimique: aplication au cas des effluents de la societe Guichard et c)

In order to decolorize dye waste before dumping it into the main sewer an electrochemical method was used. Laboratory testings, and decolorizing on a pilot test unit have led to the building of an industrial unit. The operation consists of anodic oxidation which allows the degradation of the colouring materials. This anodic oxidation work..

Microbial decolorization of textile-dye-containing effluents: a review

While coloured organic compounds generally impart only a minor fraction of the organic load to wastewater, their colour renders them aesthetically unacceptable. Effluent discharge from textile and dyestuff industries to neighbouring water bodies and wastewater treatment systems is currently causing significant health concerns to environme..

Effects of heat temperature in dyeing and finishing on the physical properties of the polyester fabrics

This paper surveys effects of wet and dry heat temperatures in sizing, scouring, pre-set and final set processes on the thermal shrinkage of the polyester fabrics. Used polyester filament for warp is 50D/24fil spark and 75D/72fil semi-dull for weft yarn.

30 years of evolution in jet dyeing machinery (Serbocroatian)

This article presents the evolution of jet dyeing machinery. It discusses the latest technology seen in the machines of ATYC, Spain. The possibilities offered to the textile dyer are reviewed and the advantages of different dyeing machines are described. Functional design of machines is discussed in view of their usefulness and future dev..

Environmentally friendly machinery for dyeing polyester

Polyester dyeing in atmospheric machinery relies on the use of carriers. The use of some carriers is inappropriate due to their toxicity or polluting effects but the more environmentally benign carriers are generally less effective in promoting dye diffus

Eco-freiendly processing of jute fabric

A Study has been carried out aimed at developing a more environmentally acceptable process for the dyeing and printing of jute fabrics with sulphur dyes. The process studied uses liquid jaggery, which was prepared by treating commercial jaggery with 0.04％ citric acid for 24 hours to extract the reducing sugars, in place of sodium sulphid..

Relaxing and washing range for tension-sensitive material

A relaxing/scouring machine for the processing of delicate fabrics is described. There is an increasing demand for units operating at low tension which can be used for woven and knitted fabrics. It is important for the fabric to dwell in hot liquor for a certain period of time. This applies to fabrics which are primarily to be relaxed, eg..

Developmental aspects of textile wet processing machinery

Recent developments in the wet treatment of textile fabrics are reviewed with emphasis on the changes made due to increased awareness of environmental pollution aspects. Ways of improving the processes of sizing, desizing and scouring are discussed together with an assessment of their benefits.

Neuro-fuzzy modelling of spectroscopic data. I. Modelling of dye solutions

The applicability of an adaptive network-based fuzzy inference system for modelling of spectroscopic absorbance data in the visible region has been studied. Some basic principles of neuro-fuzzy modeling are discussed. The samples were of a two-component dye solution over a concentration range of 0-900 mg/l for the one component (red) whil..