Abstract
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°C. 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.
Highlights
Dyes are widely used in many industries, such as textiles, leather, paper, printing, and cosmetics
Adsorption of Methylene Blue (MB) was found to be dependent on initial pH of solution, adsorbent dose, initial MB dye concentration, and phases contact time
The 6 g/L of adsorbent dose proved to be effective for discoloration of a solution of MB having 600 mg/L
Summary
Dyes are widely used in many industries, such as textiles, leather, paper, printing, and cosmetics. 10–15% 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. 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. Ion exchange, chemical oxidation, and adsorption have been used for the removal of toxic pollutant from wastewater. The interest on biomaterials and especially tannins was growing and some attractive results were obtained in the adsorption of some metals by tannin
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
