Abstract
Porous carbon adsorbents were prepared from microalgae (Chlorococcum sp.) via directly hydrothermal carbonization coupled with KOH or NH3 activation for Cr(VI) adsorption. KOH-activated porous carbons exhibit high Cr(VI) adsorption capacities than those obtained via NH3 modification (370.37 > 95.70 mg/g). The superior Cr(VI) adsorption capacity is due to high surface areas (1784 m2/g) and pore volumes of porous carbon with mesoporous and macroporous structures. The Cr(VI) adsorption result was well fitted to the Langmuir model, showing that the removal of Cr(VI) was attributed to the monolayer adsorption of activity site on carbon surface.
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Authors acknowledge financial supports provided by the National Natural Science Foundation of China (21406255), the Shanghai Science and Technology Committee (16dz1207200), and the Youth Innovation Promotion Association CAS (2015231).
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Sun, Y., Liu, C., Zan, Y. et al. Hydrothermal Carbonization of Microalgae (Chlorococcum sp.) for Porous Carbons With High Cr(VI) Adsorption Performance. Appl Biochem Biotechnol 186, 414–424 (2018). https://doi.org/10.1007/s12010-018-2752-0
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DOI: https://doi.org/10.1007/s12010-018-2752-0