Recycling Of Textile Dyeing Wash-Off Liquor Using Fenton Technology

Significant problems of the textile industry are high water consumption and a large amount of complex wastewater generation. The current study focused on the recycling of textile wastewater in the process after treatment using Fenton process. The application was carried out lab-scale synthetically produced wastewater after dyeing with Reactive Orange 122, Yellow 84, Blue 221, and Red 223. The optimum value for Fenton treatment were selected pH: 3, FeSO4: 500 mg/L, H2O2: 525 mg/L, and time: 60 min. The treated wastewater was recycled thrice in the process after treatment. The color change was ascertained in terms of color measurement, color fastness, and color strength. Results revealed that the fabric quality wasn't compromised in any way, as the color difference of the first two samples of all dyes was in the acceptable tolerance limit, except for the Red 223. Washing fastness showed no change in the results of fabric standard and samples as most of the samples showed excellent results. K/S results displayed that the samples of Orange 122 and Yellow 84 were lower; however, Blue 221 and Red 223 samples were greater than the standard. It was concluded that Fenton treatment was best suited for wash-off wastewater except Red 223, which was further recycled in the dying process. Thus, the application can save a huge amount of water consumption as well as effluent generation in the textile industry.