Biosorption of Pb(II) onto immobilized and native Mangifera indica waste biomass

The removal of Pb(II) from simulated solution and wastewater using native and immobilized Mangifera indica biomass (MIB) were studied as a function of pH, initial concentration, biosorbent dose and contact time. The biosorption data was analyzed using pseudo-first and pseudo-second order kinetic models and Langmuir, Freundlich and Temkin isotherms. The immobilized biomass did not show promising efficiency for the adsorption of Pb(II) as compared to native biomass. The SEM and EDX analysis confirmed the Pb(II) adsorption onto MIB. FTIR and desorption studies were also performed. The Langmuir model and pseudo-second order kinetic fitted well to the adsorption experimental data.

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