Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, CAS. No. 100 Haike Road, Shanghai, China.
School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China.
Appl Biochem Biotechnol. 2018 Oct;186(2):414-424. doi: 10.1007/s12010-018-2752-0. Epub 2018 Apr 12.
Porous carbon adsorbents were prepared from microalgae (Chlorococcum sp.) via directly hydrothermal carbonization coupled with KOH or NH activation for Cr(VI) adsorption. KOH-activated porous carbons exhibit high Cr(VI) adsorption capacities than those obtained via NH modification (370.37 > 95.70 mg/g). The superior Cr(VI) adsorption capacity is due to high surface areas (1784 m/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.
多孔碳吸附剂是通过微藻（绿球藻属）的直接水热碳化与 KOH 或 NH 激活相结合制备的，用于 Cr(VI)的吸附。与 NH 改性相比，KOH 激活的多孔碳具有更高的 Cr(VI)吸附能力（370.37 > 95.70 mg/g）。优越的 Cr(VI)吸附能力归因于具有中孔和大孔结构的多孔碳的高比表面积（1784 m/g）和孔体积。Cr(VI)吸附结果很好地符合朗缪尔模型，表明 Cr(VI)的去除归因于碳表面活性位的单层吸附。
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