%0 Journal Article
%T Sumac Leaves as a Novel Low-Cost Adsorbent for Removal of Basic Dye from Aqueous Solution
%A £¿znur D¨¹lger
%A Fatma Turak
%A Kadir Turhan
%A Mahmure £¿zg¨¹r
%J ISRN Analytical Chemistry
%D 2013
%R 10.1155/2013/210470
%X Sumac Leaves (SL) (Rhus Coriaria L. ) were investigated as an inexpensive and effective adsorbent for the adsorption of methylene blue (MB) from aqueous solution. The effects of initial dye concentration, initial solution pH, phases contact time, and adsorbent dose on the adsorption of MB on SL were investigated. The amount of dye adsorbed was found to vary with initial solution pH, Sumac Leaves dose, MB concentration, and phases contact time. The Langmuir and Freundlich adsorption models were evaluated using the experimental data and the experimental results showed that the Langmuir model fits better than the Freundlich model. The maximum adsorption capacity was found to be 151.69£¿mg/g from the Langmuir isotherm model at 25¡ãC. The value of the monolayer saturation capacity of SL was comparable to the adsorption capacities of some other adsorbent materials for MB. The adsorption rate data were analyzed according to the pseudo-first order kinetic and pseudo-second order kinetic models and intraparticle diffusion model. It was found that kinetic followed a pseudo-second order model. 1. Introduction Dyes are widely used in many industries, such as textiles, leather, paper, printing, and cosmetics. In dyeing industry over 30¨C60 liters of water is consumed per kg of cloth dyed and large quantities of effluent are released during the process [1]. Presently there are over 450 mills with installed capacity of 20.2 million tons (MT) with average size of 2150 total producing days (TPD) with some units of 10000£¿TPD and few of 5000£¿TPD [2]. The textile industry alone accounts for two thirds of the total dyestuff production, about 10¨C15% of the dyes used come out through the effluent. Nearly 10¨C15% of the synthetic textiles dyes, used yearly, are lost to waste streams and about 20% of these waste enter the environment through untreated or ill-treated effluent from inefficient treatment plants. Consequently, their wastewater effluents are highly colored and the disposal of these into receiving waters causes damage to the environment as they may significantly affect photosynthetic activity in aquatic life due to reduced light penetration. The release of colored wastewater from these industries may present an ecotoxic hazard and introduce the potential danger of bioaccumulation, which may eventually affect man through the food chain [3]. Dyes are almost invariably a visible pollutant, so their removal from effluents, to be added to fresh water bodies, is ecologically essential. Color removal from textile effluents is a major environmental problem concerning these days
%U http://www.hindawi.com/journals/isrn.analytical.chemistry/2013/210470/