Abstract Activated carbon (AC) derived from gasified Glyricidia sepium woodchip (GGSWAC) were prepared using KOH and CO2 activation via microwave radiation technique to remove atenolol (ATN) from aqueous solution. The surface area (SBET) and total pore volume (TPV) of GGSWAC were 483.07 m2/g and 0.255 cm3, respectively. The n-BET model fits well with the isothermal data indicating a multilayer adsorption with the saturation capacity of 121, 143 and 163 mg/g at 30, 45 and 60⁰C, respectively. The kinetic study showed that ATN adsorption followed Avrami model equation (R2≅0.99). Based on the thermodynamic parameters, the adsorption of ATN onto GGSWAC was endothermic (ΔHS = 234.17 kJ/mol) in the first layer of adsorption and exothermic in the subsequent layer (ΔHL = -165.62 kJ/mol). The ATN adsorption was controlled by both diffusion and chemisorption. In continuous operation, the Thomas (R2= 0.9822) and Yoon–Nelson (R2= 0.9817) models successfully predicted the ATN adsorption.

中文翻译：

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使用源自气化的 Glyricidia Sepium 的活化碳进行阿替洛尔封存

摘要 使用 KOH 和 CO2 活化通过微波辐射技术去除水溶液中的阿替洛尔 (ATN)，制备了源自气化 Glyricidia sepium 木片 (GGSWAC) 的活性炭 (AC)。GGSWAC 的表面积 (SBET) 和总孔体积 (TPV) 分别为 483.07 m2/g 和 0.255 cm3。n-BET 模型与等温数据非常吻合，表明多层吸附在 30、45 和 60⁰C 下的饱和容量分别为 121、143 和 163 mg/g。动力学研究表明ATN吸附遵循Avrami模型方程（R2≅0.99）。根据热力学参数，ATN在GGSWAC上的吸附在第一层吸附是吸热的（ΔHS = 234.17 kJ/mol），在后续层是放热的（ΔHL = -165.62 kJ/mol）。ATN 吸附受扩散和化学吸附控制。