Removal of methylene blue by tea wastages from the synthesis waste waters |
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Authors: | Masoud Giahi Roohan Rakhshaeeb Mohammad A.Bagheriniaa a |
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Affiliation: | a Department of Applied Chemistry, Faculty of Science, Islamic Azad University, Lahijan Branch, Lahijan 1616, Iran;b Department of Applied Chemistry, Faculty of Science, Islamic Azad University, Rasht Branch, Rasht 41335-3516, Iran |
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Abstract: | The tea wastages could remove methylene blue(MB) as a cationic dye from waste water corresponding to second-order kinetic model.Thermodynamic studies showed that adsorption equilibrium constant(KL) and maximum adsorption capacities(Qmax) were increased with increasing temperature.The removal efficiency of MB for Co 0.01 mmol/L at optimum conditions was about 85%. The maximum uptake capacity(Qmax) of methylene blue in a batch reactor was 0.328,0.542 and 0.659 mmol/g at 15,25 and 40℃, respectively.The enthalpy change(ΔH) and entropy change(ΔS) were 11.356 kJ/mol and 20.563 J/(mol K),respectively. |
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Keywords: | Waste water Methylene blue Biosorption Tea wastages |
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