Abstract

The current research includes the adsorption of Rhodmine-B Dye on the surface of Citrus Leaves using the technique of UV. Vis spectrophotometer to determine data of quantitative adsorption at various contact time, ionic strength, PH and temperature conditions. As a function of temperatures 25,35,45,55 0C, the dsorption phenomenon was examined, and the results showed that Rhodamine-B adsorption Citrus leaves rose with increasing temperatures on the surface (endothermic process). Using various NaCl solution concentrations, the effect of ionic strength on adsorption has also been studied. Increasing the importance of ionic strength has been shown to improve the amount of adsorption of Rhodamine-B on citrus leaves at constant temperatures.The quantity of Rh-B dye that was adsorbed on the citrus leaves was increased with increasing the PH of the solution in rang 3-7. Then the results were subjected to the practical results obtained with the use isotherms of the Langmuir, Frendelsh, and Temkin. The results can be shown that the isotherm suitable for adsorption applies to Ferndelsh and Temkin. The thermodynamic functions (the amount of change in enthalpy, the amount of change in entropy and the amount of change in the free energy of Gibbs) were also studied, and it was found that the thermodynamic results of the adsorption process of the Rhodamine-B dye on the powder of citrus leaves are endothermic and an automatic adsorption process.

Highlights

  • Today, all societies suffer from water pollution problems due to the drainage of industrial effluents into surface water contaminated with toxic dyes from a wide range of industries, such as textiles, leather, sheet, printing, food, beauty products, paint, rubber, plastics, pesticides, wood preserving chemicals and pharmaceuticalindustries[1]

  • Rhodamine B molecular dye formula (C28H31ClN2O3) and chemical composition Fig.[1] is supplied by the HIMEDIA Company while citrus leaves were collected from the University of Baghdad gardens

  • Adsorbent Dosage: The effect of the adsorbent dosage on the removal of RhB dye was explored in different quantities of powdered citrus leaves, while keeping the initial dye concentration 8ppm in 30 min at 25 oC .Fig.[4] shows the effect of dosage of citrus leaves powder on the adsorption percentage removal of rhodamine B dye

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Summary

Introduction

All societies suffer from water pollution problems due to the drainage of industrial effluents into surface water contaminated with toxic dyes from a wide range of industries, such as textiles, leather, sheet, printing, food, beauty products, paint, rubber, plastics, pesticides, wood preserving chemicals and pharmaceuticalindustries[1]. Water pollution is defined as water contamination and the alteration of water's physical, chemical and biological characteristics. It entails the dumping of any sewage or commercial waste or any other fluid. Gaseous or solid compounds are likely to produce a nuisance by means of their physical presence, odor or taste. Such discharge can damage and harm Water for the public as far as domestic hygiene is concerned. They are concerned with commercial, manufacturing and agricultural life

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