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- W2767940939 abstract "Abstract Removal of fluoride was done by adsorbent prepared from leaves of Syzygium cumini. Adsorbent preparation was done by calcination (500 °C) and characterized by multiple physiochemical, and micro-analytical techniques including EDS, FT-IR, TGA and XRD. The adsorbent was mainly composed of calcium carbonate and calcium oxide/hydroxide. Adsorption study revealed a maximum fluoride removal efficiency of 77.8% with uptake capacity 4.56 mg g−1, within 60 min of contact time from an initial 6 mg L−1 fluoride solution with adsorbent dose 6.5 g L−1 at pH 6.5 and temperature 300 K. Fluoride adsorption data obtained best fitted to the Freundlich isotherm model, signified a multilayer adsorption process. Additionally, the mean calculated adsorption energy (1 kJ mol−1) from the Dubinin-Radushkevich model suggested a physical adsorption process. The kinetic adsorption data showed agreement to the pseudo-second-order and intraparticle diffusion model, both signifying that the removal of fluoride involved boundary layer effect and intraparticle diffusion. Spontaneous and exothermic nature of the adsorption process was revealed by the thermodynamic parameters. Finally, the adsorbent successfully purified two real water samples contaminated with fluoride. The results suggested that physical adsorption with some effect of electrostatic interaction and anion exchange was also involved in the fluoride adsorption. This study will be useful in designing new calcium based low-cost adsorbent from biological wastes for removing fluoride from contaminated water." @default.
- W2767940939 created "2017-11-17" @default.
- W2767940939 creator A5010911273 @default.
- W2767940939 creator A5011750883 @default.
- W2767940939 creator A5091206094 @default.
- W2767940939 date "2018-04-01" @default.
- W2767940939 modified "2023-10-17" @default.
- W2767940939 title "Optimization of fluoride removal from aqueous solution using Jamun ( Syzygium cumini ) leaf ash" @default.
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- W2767940939 doi "https://doi.org/10.1016/j.psep.2017.10.022" @default.
- W2767940939 hasPublicationYear "2018" @default.
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