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- W4313334592 abstract "Abstract A significant environmental concern is posed by wastewater containing dyes. When dealing with a polluted medium, adsorption is a beneficial method for the removal of contaminants. This study used argan nutshell as a precursor to synthesize activated carbon via chemical activation with Na 2 CO 3 at 600 °C. The prepared activated carbon (Na@Ac) was characterized using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET), and zeta potential measurements. The results showed that the prepared activated carbon has a high surface area (1543 m 2 /g) and microporous structure. Furthermore, many parameters for Rhodamine B (RhB) dye removal efficiency, including pH, initial pollutant concentration, and temperature, were optimized by response surface methodology (RSM) with a central composite design. Based on the RSM, the best efficiency was 96.84% for the removal of RhB at pH 5, temperature 20 °C, and initial concentration 33.2 mg/L. The kinetic of RhB dye adsorption onto Na@Ac was effectively explained by a pseudo-second-order model, with a maximum uptake capacity of 35.9 mg/g. Moreover, Density functional theory (DFT) calculations were used to understand the adsorption mechanism of the RhB dye onto the Na@Ac. Based on the DFT calculations, hydrogen bonding and π-π interactions may be preferred mechanisms of RhB dye adsorption onto Na@Ac. The Na@Ac could be a promising adsorbent for the removal of Rhodamine B from polluted wastewater." @default.
- W4313334592 created "2023-01-06" @default.
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- W4313334592 date "2022-12-29" @default.
- W4313334592 modified "2023-09-25" @default.
- W4313334592 title "Synthesis, characterization, and DFT investigation of rhodamine B dye removal by activated carbon produced from argan nutshell" @default.
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- W4313334592 doi "https://doi.org/10.1007/s13399-022-03706-4" @default.
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