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- W2024293454 abstract "Maize bran is a low cost biosorbent that has been used for the removal of lead(II) from an aqueous solution. The effects of various parameters such as contact time, adsorbate concentration, pH of the medium and temperature were examined. Optimum removal at 20 °C was found to be 98.4% at pH 6.5, with an initial Pb(II) concentration of 100 mg l−1. Dynamics of the sorption process and mass transfer of Pb(II) to maize bran were investigated and the values of rate constant of adsorption, rate constant of intraparticle diffusion and the mass transfer coefficients were calculated. Different thermodynamic parameters viz., changes in standard free energy, enthalpy and entropy were evaluated and it was found that the reaction was spontaneous and exothermic in nature. The adsorption data fitted the Langmuir isotherm. A generalized empirical model was proposed for the kinetics at different initial concentrations. The data were subjected to multiple regression analysis and a model was developed to predict the removal of Pb(II) from an aqueous solution." @default.
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- W2024293454 date "2006-11-01" @default.
- W2024293454 modified "2023-09-23" @default.
- W2024293454 title "Removal of lead from aqueous solutions by agricultural waste maize bran" @default.
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- W2024293454 doi "https://doi.org/10.1016/j.biortech.2005.09.016" @default.
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