COLOR AND COD REMOVAL FROM TREATED TEXTILE INDUSTRY EFFLUENTS WITH VARIOUS ADSORBENTS

Year 2017, Volume: 35 Issue: 4, 729 - 736, 01.12.2017

Gül Kaykıoğlu Elçin Güneş Yalçın Güneş Suna Özden Çelik

Abstract

The rapid depletion and pollution of water resources are extremely negative impact on all life in Ergene River Basin in Turkey. The highly polluted sites were Corlu and Cerkezköy in the basin which located near the most urbanized and industrialized area. New discharge standards were developed by Turkish Water Pollution Control Regulation (TWPCR) for COD (chemical oxygen dimend) and color to prevent pollution caused by insufficient wastewater treatment in the basin. The aim of this study was to evaluate the color and COD removal efficiency of various adsorbents for biologically treated effluents of a local textile factory in Corlu which has COD:200 mg/L and color:39.4 m-1. In the study four adsorbents were used: the waste metal hydroxide (WMH) obtained from aluminum electroplating industry, colemanite waste (CW) and ulexite waste (UW) collected from boron ore wastes and magnetic nanoparticles (Fe3O4) (MNP). The adsorption of color and COD onto different adsorbents were studied at natural pH (pH 7.5), different adsorbent doses (2-30 g/L) and different contact times (0, 15, 30, 60, 90, 120, 150, 180 min). The color removal efficiencies of WMH and UW were bigger than MNP and CW. Adsorption with UW achieved to equilibrium at 120 min and with WMH at 180 min. The maximum color removal efficiencies were 67% for UW and 57% for WMH. The maximum COD removal efficiencies were 72% for UW and 70% for WMH. Both adsorbents were reduced COD below 100 mg/L and color below 20 m-1. Freundlich model yielded better fit than the Langmuir model for the adsorption of color and COD on UW and WMH.

Keywords

Adsorption, waste metal hyroxide, ulexite waste, colemanite waste, magnetic nanoparticles

References

• [1] Santos S.C.R., Vilar V.J.P., Boaventura R.A.R., (2008) Waste metal hydroxide sludge as adsorbent for a reactive dye, J. Hazard. Mater. 153(3) 999–1008.
• [2] Mittal A., Jhare D., Mittal J., Gupta V.K., (2012) Batch and bulk removal of hazardous colouring agent Rose Bengal by adsorption over bottom ash, RSC Adv. 2 (22) 8381–8389.
• [3] Mittal A. and Gupta V.K., (2010) Adsorptive removal and recovery of the azo dye Eriochrome Black-T, Toxicol. Environ. Chem. 92(10) 1813–1823.
• [4] Güneş E. and Kaygusuz T., (2015) Adsorption of Reactive Blue 222 onto an industrial solid waste included Al(III) hydroxide: pH, ionic strength, isotherms, and kinetics studies, Desalination and Water Treatment, 53, 2510–2517.
• [5] Kaykioglu G. and Gunes E., (2016) Comparison of Acid Red 114 Dye Adsorption by Fe3O4 and Fe3O4 Impregnated Rice Husk Ash, Journal of Nanomaterials, vol. 2016, http://dx.doi.org/10.1155/2016/6304096, pp. 1-10.
• [6] Gupta V. K. and Nayak A., (2012) Cadmium removal and recovery from aqueous solutions by novel adsorbents prepared from orange peel and Fe2O3 nanoparticles, Chemical Engineering Journal, vol. 180, pp. 81–90.
• [7] APHA/AWWA/WPCF, (2005) Standard Methods for the Examination of Water and Wastewater, 21th edn., American Public Health Association, Washington, DC.
• [8] Mane V.S., Mall I.D., Srıvastava V.C., (2007) Kinetic and equilibrium isotherm studies for the adsorptive removal of Brilliant Green dye from aqueous solution by rice husk ash, J. Environ. Manage. 84, 390-400.
• [9] Jain C.K., Kumar A., Izazy M.H., (2009) Color removal from paper mill effluent through adsorption technology. Environ Monit Assess. 149, 343-348.
• [10] Mohan D., Singh K.P., Singh V.K., (2008) Wastewater treatment using low cost activated carbons derived from agricultural byproducts—A case study, Journal of Hazardous Materials 152 1045–1053.
• [11] Devi R., Dahia R.P., (2006) Chemical oxygen demand (COD) reduction in domestic wastewater by fly ash brick kiln ash, Water Air Soil Pollut. 174, 33–46.