5th INTERNATIONAL CONFERENCE OF ECOSYSTEMS, Tirane, Albania, 5 - 08 June 2015, pp.61
Dyestuffs vary according to the industrial branch and industrial activity that they are used for. The most extensively used area of colorant pigments are textile, paper, leather, rubber, medicine, food, cosmetics and dye industry. If rapid development of, especially, textile industry in our country is considered, of treatment of the colored waste water is quite important in terms of environment and human health. It has long been known that clays adsorb dyestuffs and heavy metals and therefore the use of clays as adsorbents for removal of contaminants has become important in recent years. In this study, the possibility of the use of clays for the removal of dyestuff was investigated. Clays can be accessible easily and cheaply therefore their use for the removal of dyestuff is economically attractive. Thus, two types of adsorbents have been used in this study. In this study, the adsorption capacity of dyestuff methylene blue on the natural clay taken from Derik province of Mardin city (Turkey) and clay samples of montmorillonite clay taken from Southern clay Products Company has been investigated. The measurement of surface area can determine amount of dyestuff that can be adsorbed, so the surface area of clays have been measured with a instrument called BET. The adsorption of dyestuff methylene Blue, in our study, on natural clay and commercial clay has been evaluated graphically at 25oC for seven different initial concentrations as 50, 100, 150, 200, 250, 300 and 350 mg/L, and Langmuir, Freundlich and Scatchard isotherm models have been investigated. It has been concluded that removal of dye stuff is more suitable to Freundlich isotherm model.
Key words: Dye, Clay, Adsorption, Isotherm