Thermodynamic and Kinetic Studies of Lead Adsorption from Aquesous Solution onto Petiole and Fiber of Palm Tree
作者： Bushra B. Qassim , Mohammed T. Khethi , Naema A. Hikmat
DOI:
关键词: Chemistry 、 Sorption 、 Inorganic chemistry 、 Freundlich equation 、 Activated carbon 、 Exothermic reaction 、 Adsorption 、 Chromatography 、 Aqueous solution 、 Langmuir adsorption model 、 Fiber
摘要: The aim of this work is to investigate the key parameters and mechanism affecting removal Pb(II) metal ion from aqueous streams, using agricultural waste materials adsorbents such as leaf base (petiole) fiber date palm, not nature form but after being modified activated carbon for increasing their sorption capabilities. Using Batch mode, study showed equilibrium time was relatively fast reached about 30 40 min, by respectively, obtained result indicated that over pH range (6.5-7) there an increased optimum adsorption, (0.5g) adsorbent weight very ideal obtain best ions decreased with increase temperature, indicating adsorption process exothermic in nature. isotherms on two obeyed Langmuir isotherm better than Freundlich isotherm. Thermodynamic (ΔG o ), (ΔH ) (ΔS have been evaluated. It has found feasible, spontaneous Calculated kinetic pseudo first order model fit experimental data. Adsorption method water because it simple, saving, inexpensive, high efficiency regeneration adsorbents.
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