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- W1971885981 abstract "The low-cost activated carbon prepared from Date stone, an agricultural solid waste by-product, were prepared by chemical activation with sulphuric acid for the removal of lead and zinc from aqueous solutions has been studied as a function of pH, contact time, metal concentrations and adsorbent concentrations. Adsorption equilibrium was reached after an equilibration time of 60 min and adsorption kinetics data were tested using Lagergren pseudo-first-order and pseudo-second order, the studies showed the adsorption process followed pseudo-second-order rate model. The maximum removal of Pb2+ and Zn2+ is observed at pH 6.0 (94.4%) and 7.0 (93.2%) respectively at initial concentration 20 mg/L. The isotherm equilibrium data were well fitted by the Langmuir and Freundlich models. The adsorption capacity q max) calculated from the Langmuir isotherm was 19.64 mg Pb2+/g and 10.41 mg Zn2+/g at an initial pH of 6.0 at 20 ± 2°C." @default.
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- W1971885981 date "2010-04-01" @default.
- W1971885981 modified "2023-10-13" @default.
- W1971885981 title "Removal of Pb<sup>2+</sup>and Zn<sup>2+</sup>from the aqueous solutions by activated carbon prepared from<i>Dates stone</i>" @default.
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- W1971885981 doi "https://doi.org/10.5004/dwt.2010.1106" @default.
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