School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China.
Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, 212013, China.
Environ Sci Pollut Res Int. 2022 Sep;29(45):68724-68734. doi: 10.1007/s11356-022-20564-9. Epub 2022 May 12.
In this study, the efficiency of activated carbon (AC) synthesized from the shrimp shell plus cellulose (SS@C) was optimized toward Bisphenol A (BPA) adsorption. Low-cost, renewable, and non-toxic shrimp shells mixed with cellulose were carbonized, followed by activation via CO and NaHCO to produce SS@C-AC. The results revealed that SS@C-AC samples were a porous composite with mesoporous structures comprising a relatively high specific surface area (935.20 m/g) with a mean pore size of around 3.8 nm and mesoporous volume of 1.83E-02 cm/g. The influences of initial concentrations, pH values, and adsorption on BPA were investigated systematically. Isotherm model and kinetics study of the adsorption of BPA on SS@C-AC exhibited that the obtained data were in agreement with the Langmuir adsorption isotherm model while there is no difference between PFO and PSO kinetic results for BPA concentrations in the range 25-100 mg/L. The impregnation ratio of 1.5 NaHCO and an activation time of 90 min at 800°C were the optimum conditions under which BPA removal of 81.78% was obtained.
在这项研究中，优化了由虾壳加纤维素合成的活性炭（AC）对双酚 A（BPA）吸附的效率。虾壳与纤维素混合，成本低、可再生、无毒，经过碳化，然后通过 CO 和 NaHCO3 进行活化，得到 SS@C-AC。结果表明，SS@C-AC 样品是一种具有介孔结构的多孔复合材料，比表面积较高（935.20 m/g），平均孔径约为 3.8nm，介孔体积为 1.83E-02cm/g。系统研究了初始浓度、pH 值和吸附对 BPA 的影响。BPA 在 SS@C-AC 上的吸附等温线模型和动力学研究表明，所得数据与 Langmuir 吸附等温线模型一致，而在 25-100mg/L 的 BPA 浓度范围内，PFO 和 PSO 动力学结果之间没有差异。1.5NaHCO 的浸渍比和 800°C 下 90min 的活化时间是最佳条件，在此条件下，BPA 的去除率达到 81.78%。
