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- W1969968679 abstract "Abstract The objective of this work was to propose an alternative use for ephedra residue (ER) as untreated biosorbents for the removal of Pb 2+ ions from aqueous solutions. Biosorption studies were conducted as a function of the solution pH, contact time and initial metal ion concentration. The biosorption kinetics was determined by fitting second-order kinetic models to the experimental data, being described by the pseudo-second-order model ( R 2 > 0.99). Both Langmuir and Freundlich sorption models fit the experimental sorption equilibrium data, with Langmuir providing the best fit ( R 2 > 0.97). According to the Langmuir equation, the maximum uptake capacity for Pb 2+ ions was 1.0 mmol/g at 298K. A comparison of the maximum sorption capacity of several untreated biomaterial-based residues showed that the ER is a suitable candidate for use as biosorbents in the removal of Pb 2+ ions from aqueous solutions." @default.
- W1969968679 created "2016-06-24" @default.
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- W1969968679 date "2013-01-01" @default.
- W1969968679 modified "2023-10-16" @default.
- W1969968679 title "Untreated Chinese Ephedra Residue as Biosorbents for the Removal of Pb2+ Ions from Aqueous Solutions" @default.
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- W1969968679 doi "https://doi.org/10.1016/j.proenv.2013.04.107" @default.
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