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

Abstract

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.

The alternating and direct current effect on the elimination of cationic and anionic dye from aqueous solutions by electrocoagulation and coagulation flocculation

“…Recently, adsorption and electrocoagulation emerged as very effective solutions to overcome the major drawbacks of conventional processes in removing unwanted wastewater effluents (Hamdan and El-Naas 2014). These methods have the ability to remove a wide range of pollutants (Barrera-Díaz et al 2014;Elabbas et al 2016), such as phenolic wastes (Adhoum and Monser 2004), petroleum refinery wastewater (Gousmi et al 2016), organic wastewater (Mahvi et al 2011) ammoniac and phosphate treatment wastewater (Adebayo et al 2015), textile wastewater (Saeed et al 2015), and removal of heavy metals (Umran and Sadettin 2015).…”

Use of Ozone in the Textile Industry

“…Depending on the desired effect, denim garments are treated with different substances [28,29]. A lot of dry and wet processing techniques are used for desired effects [30]. Wet processes in denim washing are not environment friendly.…”

“…Wet processes in denim washing are not environment friendly. High water and energy consumption, large amount of wastewater, and solid waste like pumice stones are generally environmental problem in denim washing [29,30]. Sodium hypochlorite is a very common bleaching agent in denim washing.…”

An Experimental Investigation of Different Washing Processes on Various Properties of Stretch Denim Fabric

“…Denim is considered as the oldest fashion products in the world [5] [6] [7]. Denim fabric is made of cotton twill weave structure with 100% cotton and very comfortable to feel [8] [9]. This fabric is used to manufacture jeans, jackets, shirts, purses, bags, and many other fashion items for men and women of all ages around the world [10] [11] [12].…”