Biosorption of Pb(II) ions from aqueous solution by pine bark (Pinus brutia Ten.)
作者： Ali Gundogdu , Duygu Ozdes , Celal Duran , Volkan Numan Bulut , Mustafa Soylak
DOI: 10.1016/J.CEJ.2009.06.017
关键词:
摘要: Abstract The biosorption potential of pine ( Pinus brutia Ten.) bark in a batch system for the removal Pb(II) ions from aqueous solutions was investigated. characteristics on investigated with respect to well-established effective parameters including effects solution pH, initial concentration, mass bark, temperature, and interfering present, reusability, desorption. Initial pH contact time were optimized 4.0 4 h, respectively. Langmuir Freundlich equilibrium adsorption models studied observed fit well. maximum capacity found be 76.8 mg g −1 by isotherms (mass bark: 1.0 g L ). kinetic data fitted pseudo-second-order model correlation coefficient greater than 0.99. thermodynamic Gibbs free energy (Δ G °), enthalpy H entropy S °) changes also calculated, values indicated that process spontaneous. Reutilization biosorbent feasible 90.7% desorption efficiency using 0.5 M HCl. It concluded can used as an effective, low cost, environmentally friendly solution.
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