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Title

BATCH REMOVAL OF ACID BLUE 292DYE BY BIOSORPTION ONTO LEMNA MINOR: EQUILIBRIUM AND KINETIC STUDIES

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 Start Page 9 | End Page 19

Abstract

 Background: Recently, there has been a great concern about the consumption of dyes because of their toxicity, mutagenicity, carcinogenicity, and persistence in the aquatic environment. Therefore, the aim of this study was to determine the feasibility of using LEMNA MINOR for Acid Blue 292 (AB292) dye removal from aqueous solution and to determine the optimal conditions.Methods: This experimental study was conducted in the batch systems to investigate the effects of parameters such as contact time, initial concentration of dye, pH and LEMNA MINOR biomass dose. Isotherms and kinetic studies of dye adsorption were performed using equilibrium data.Results: According to the results, a maximum removal efficiency of 98.5% was obtained at pH of 3 and the contact time of 90 min; initial dye concentration 10 mg/L and adsorbent dose 3g/L. The adsorption data was best fitted to the Langmuir isotherm and pseudo-second order kinetic model.Conclusion: The results showed that LEMNA MINOR could be used as a cost-effective adsorbent for removing AB292 dye from textile wastewater efficiently

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