Color Removal with Natural Materials for Reuse of Wastewater in Textile Industry

Atımtay, Aysel
Duygulu, Bahadir
The water consumption in textile industry, especially in dyeing and washing processes is too high. Therefore, large amount of wastewater is produced and discharged to the receiving environment during textile production process. Discharge of colored effluents without decoloration originated from textile industries may cause serious problems in the receiving environments. Besides water resources are limited. The textile industry should look for recycling and reusing this water. The objective of this chapter is to explain the use of various natural materials like basaltic tephra and clinoptilolite to remove basic, acidic and reactive types of dyes from textile wastewater. The determination of dye removing capacities and adsorption isotherms of these adsorbents are among the objectives of this study. The second objective is to modify the surface properties of these adsorbents by using a surfactant chemical and then determine their equilibrium sorbent capacities again with basic, acidic and reactive dyes. The results showed that removal efficiencies for cationic basic dyes are higher than those for anionic acidic and reactive dyes with the natural materials. Therefore, modification of surface properties of natural materials with a cationic surfactant was considered to increase the removal efficiencies of those for anionic dyes. After modification of the surface properties, adsorption capacities of adsorbents for anionic dyes were higher than those of natural materials. The results showed that the adsorption of dyes on adsorbents used in this study fitted nicely to the Langmuir Isotherm Equations.
Citation Formats
A. Atımtay and B. Duygulu, “Color Removal with Natural Materials for Reuse of Wastewater in Textile Industry,” presented at the NATO Advanced Research Workshop on Security of Industrial Water Supply and Management, Ankara, TURKEY, 2010, Accessed: 00, 2020. [Online]. Available: