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M. Ghasemi,Mu. Naushad,N. Ghasemi,Y. Khosravi-fard 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.2
Fig sawdust was used as a precursor for the production of activated carbon by chemical activation withH3PO4. The developed Fig sawdust activated carbon (FSAC) was used as a biosorbent for the removal ofPb(II) from aqueous solution. Highest adsorption of Pb(II) (95.8%) was found at pH 4. Equilibrium datafitted very well with the Langmuir isotherm model. Maximum adsorption capacity was determined80.645 mg g1 at pH 4. Kinetic studies demonstrated that the adsorption followed a pseudo second orderkinetics model. The negative value of DG8 confirmed the feasibility and spontaneity of FSAC for Pb(II)adsorption.
M. Ghasemi,M. Naushad,N. Ghasemi,Y. Khosravi-fard 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4
The main goal of this study was to evaluate the performance of two new adsorbents, ash and Fe nanoparticles loaded ash (nFe-A) for the removal of Pb(II) from aqueous solution. Batch experiments were performed as a function of various experimental parameters. The adsorption studies included both equilibrium adsorption isotherms and kinetics. Equilibrium data fitted very well with the Langmuir isotherm model. Kinetics studies showed better applicability for pseudo-second-order model for both adsorbents. The regeneration studies showed promising regeneration potential of these adsorbents. The breakthrough capacities of ash and nFe-A for Pb(II) removal was found 25 and 30 mg g 1, respectively.