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- W2033781713 abstract "We report the synthesis of rod-like hydroxyapatite nanopowder from waste eggshells (decomposed to CaO) and phosphoric acid at room temperature without pH control. The procedure involves the use of a syringe pump to control the addition rate of the phosphoric acid in order to maintain a stable pH. Results revealed that pure, rod-like, and nano-size hydroxyapatite particles were produced at various addition rates. Moreover, the sample obtained from 200 ml/h addition rate exhibited large surface area (160.1 m2/g) and pore volume (1.0 cm3/g). Consequently, the prepared hydroxyapatite and that previously produced as adsorbents showed fast adsorption rates (10 min) as well as very high maximum adsorption (qm = 994.5 mg/g and 1000.5 mg/g, respectively) for Pb2+ in aqueous solution. Furthermore, the adsorption process revealed a pseudo-second-order reaction model and the equilibrium adsorption could be described by Langmuir model." @default.
- W2033781713 created "2016-06-24" @default.
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- W2033781713 date "2015-02-01" @default.
- W2033781713 modified "2023-10-03" @default.
- W2033781713 title "Synthesis of rod-like hydroxyapatite with high surface area and pore volume from eggshells for effective adsorption of aqueous Pb(II)" @default.
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- W2033781713 doi "https://doi.org/10.1016/j.materresbull.2014.11.023" @default.
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