Four millenia of carpet dyeing

Historically production of carpets is thought to have commenced some 4000 years ago in the region stretching from Turkey to China. Production in Belgium began around 1000 years ago and carpet manufacturing developed in the UK at Wilton in 1655 and Kidderminster in 1735. Synthetic dyes became established in the early 1990's and improved le..

Robots running the laboratory

Automation in laboratory work is becoming just as important as automation in production. In dispensing Datacolor's Autolab range allows simultaneous dispensing and Sclavos, a Greek company, has developed robotised laboratory dispensing which can produce dye recipes and stock solutions automatically. In dyeing equipment Roaches Supervisory..

Enzymatic decolorization of textile dyeing effluents

Commercial azo, triarylmethane, antraquinonic, and indigoid textile dyes are efficiently decolorized with enzyme preparations from Pleurotus ostreatus, Schizophyllum commune, Neurospora crassa, Polyporus sp., Sclerotium rolfsii, Trametes villosa, and Myceliphtora thermophila. The nature of substituents on the dyes' benezene rings influenc..

Advanced oxidation process in the technology of textile wastewater treatment

The efficiences of advanced oxidation processes for three different types of textile wasterwater taken from textile plants in Lodz were compared on the basis of the results obtained. The wastewater had different compositions and concentrations of polluatants. The wastewater prior to and after the treatment was analyzed according to Polish..

Decolorisation and degradation kinetics of reactive dye wastewater by a UV/ultrasonic/peroxide system

The decolorisation of reactive dyeing wastewater with ultraviolet radiation and ultrasonic vibration in the presence of hydrogen peroxide was investigated by a batch operation system. Kinetic studies of the reactive dye were conducted on the effects of pH and peroxide dosage, and the performance of ultrasonic vibration on the oxidation pr..

Oxidative degradation of dyes and surfactant in the Fenton and photo-Fenton treatment of dyehouse effluents

The oxidative degradation of two dyes and a nonionic surfactant by iron(II) sulphate and hydrogen peroxide (Fenton's reagent) was studied, in the presence of UV irradiation (photo-Fenton process). The degradation kinetics were followed by measuring the residual total organic carbon (TOC) value as a function of time at different initial TO..

Preventive approach to lowerging emissions

New methods of cutting emissions of dyestuffs and chemicals from carpet and textile plants are being investigated in Holland. In a program supported by the Dutch Agency for Energy and Environment, NOVEM, a number of projects have been carried out to investigate the prevention of emissions, as a preferred alternative to end-of-pipe methods..

Comparative adsorption efficiency of various low cost adsorbents for deicolourization of methylene blue-A lab scale investigation

Adsorptive capacity of five different low cost adsorbents (Baggase pith, orange peel, Saw dust, Eichhornia roots and shoot)has been tested for the decolourization of waste water containing methylene blue. The adsorption capacity of each adsorbent has been determined and this adsorption capacity was compared with activated carbon. The proc..

Heat treatment

Leading greek sportswear specialist Farco SA has installed a Koenig heat recovery system in its dyeshouse, which reduced oil consumption by 35%. The plant at Komotini is soon to install a second identical system, allowing the recovery of more heat energy, which will be used to pre-heat inlet water for the dyeing machine.

Teijin develops apparel with colour development fibre

Teijin Limited has developed an apparel fabric made from 'Morphotex' colour development fibre. The fibre was developed jointly with Nissan Motor Co., Ltd., and appears to be coloured without the use of dyes or pigments. This effect is produced by overlapping very thin layers of polymer, creating a fibre which appears to be coloured in the..