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Dye Removal From Textile Waste Water Through The Adsorption By Pumice Used In Stone Washing

Körlü A. E., Yapar S., Perinçek S., Yılmaz H., Bağıran C.

Autex Research Journal

2015

Vol. 15, no. 3

158--163

Because the waste production is inevitable in almost all industries, the elimination of these wastes is a requirement in terms of environmental regulations and welfare of all the creatures in the future. In this study, the use of the waste pumice stones of a denim washing mill is intended to eliminate the pollutant by a waste material and obtain economic benefits by converting it to the adsorbent. The pollutants in the effluents obtained from three different localisations of waste water treatment system of the same factory were removed through the adsorption. The experimental studies were carried out in three different steps; characterisation of adsorbent before and after adsorption; adsorption isotherm studies and biological oxygen demand (BOD), chemical oxygen demand (COD) measurements. Characterisation studies showed that the waste pumice has almost the same structural properties with unused one except the existence of some organic residues coming from washing process. The results of adsorption studies conducted at the adsorbent concentrations changing from 5 to 35 g/l revealed that the decolourisation was initial dye-concentration dependent. According to the BOD and COD measurements, the supernatants obtained at the end of adsorption could be assumed as somewhat polluted and this result indicates that the organic impurities other than indigo were also removed through the adsorption.

Use of Ultrasonic Technology in Enzymatic Pretreatment Processes of Cotton Fabrics

Karaboğa C., Körlü A. E., Duran C., Bahtiyari M. I.

Fibres & Textiles in Eastern Europe

2007

Vol. 15, no. 4 (63)

97--100

The field of ultrasonics is still making strides towards perfection, but already many applications of ultrasonic energy have been found in science and technology. Ultrasonics is the science of sound waves above the limits of human audibility. The aim of this study was to investigate the effects of ultrasound on textile pretreatment processes especially on enzymatic processes. Use of enzymes in the textile industry has become more popular in recent years. Although enzymatic processing offers many advantages, there are a few drawbacks when compared to traditional methods, namely, expensive processing costs and relatively slow reaction rates. Introducing ultrasonic energy during enzymatic treatment of cotton fabric significantly improves enzyme efficiency without affecting the strength of the fabric.

Celem pracy było zbadanie wpływu ultradźwięków na przebieg procesów wstępnej obróbki tkanin, w szczególności na obróbkach enzymatycznych. Zastosowanie enzymów w przemyśle włókienniczym stało się popularne w ostatnich latach. Jakkolwiek obróbka enzymatyczna ma szereg zalet, cechują ją jednak również pewne wady w stosunku do procesów klasycznych, w tym wysokie koszty i stosunkowo niskie czasy reakcji. W niniejszej pracy wykazano, że zastosowanie ultradźwięków podczas obróbki enzymatycznej tkanin bawełnianych znacznie polepsza wydajność procesów enzymatycznych na tkaninach bawełnianych, bez ujemnego wpływu na właściwości wytrzymałościowe tkanin.