Laboratoire de Génie de l'Environnement (LGE), Faculté de Technologie, Université de Bejaia, 06000 Bejaia, Algérie E-mail:
Université Clermont Auvergne, Institut Pascal, 2 Avenue Blaise Pascal, TSA 60206, CS 60026, 63178, Aubière Cedex, France.
Water Sci Technol. 2020 Dec;82(11):2513-2524. doi: 10.2166/wst.2020.524.
Cotton cloth waste was used as a precursor to prepare activated carbon (ACCs) chemically activated with phosphoric acid. Adsorption behavior of prepared ACCs was correlated with physicochemical proprieties. The pore volume and BET surface of ACCs were determined by nitrogen adsorption isotherms and scanning electron microscopy was used to observe their surface morphologies. Fourier transform infrared (FTIR) spectroscopy analysis and pH point zero charge (pH) were conducted to determine chemical properties. Under the optimal conditions: 50% impregnation ratio and thermal treatment under N flow at 600 °C during 60 min, the activated carbon prepared exhibits a high surface area 1,150 m/g, 0.501 cm/g micropore volume and an excellent adsorption performance. The adsorbed amount of clofibric acid is found to be 9.98 and 83 mg/g at, respectively, initial CA concentration of 10 and 100 mg/L at pH 3.0 and 20 °C. Diffusion and chemisorption are the steps controlling the adsorption of CA onto ACC 50% and the equilibrium data were well described by Freundlich isotherm.
棉织物废料被用作前驱体，通过磷酸化学活化来制备活性炭（ACCs）。制备的 ACCs 的吸附行为与物理化学性质相关联。通过氮气吸附等温线确定了 ACCs 的孔体积和 BET 表面积，并通过扫描电子显微镜观察了它们的表面形态。进行傅里叶变换红外（FTIR）光谱分析和 pH 值零点电荷（pH）来确定化学性质。在最佳条件下：50%的浸渍比和在 N 流下于 600°C 热处理 60 分钟，所制备的活性炭表现出高比表面积 1150 m/g、0.501 cm/g 的微孔体积和优异的吸附性能。在 pH 值为 3.0 和 20°C 时，初始 CA 浓度分别为 10 和 100 mg/L 的情况下，测得 clofibric 酸的吸附量分别为 9.98 和 83 mg/g。扩散和化学吸附是控制 CA 吸附到 ACC 50%的步骤，平衡数据很好地符合 Freundlich 等温线。
