Abstract Activated carbons of ackee apple pods were prepared at 400 °C (ZAc-400) and 500 °C (ZAc-500). The surface area and pore volume for ZAc-500 are 812.79 m2/g and 0.387 cm3/g as compared with ZAc-400 of 321.01 m2/g and 0.15 cm3/g respectively. Consequently, ZAc-500 showed better physicochemical properties and a more porous structure than ZAc-400. The presence of -OH, -CH, C=C and C-O were observed on the surfaces of both ZAc-400 and ZAc-500. ZAc-500 performed better than ZAc-400 for the removal of methylene blue (MB). The MB adsorption onto ZAc-400 and ZAc-500 was best described by the Langmuir isotherm with R2 ≥ 0.91 and pseudo-second-order kinetic models with closed values of qe, exp and qe, cal (49.96 and 50.2 for ZAc-500 and 48.99 and 51.2 for ZAc-400 respectively). Ackee apple pod is a potential agricultural waste for the production of activated carbon and the treatment of dye-laden industrial effluents.

中文翻译：

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苹果荚活性炭吸附亚甲基蓝的等温线及动力学研究

摘要 在 400 °C (ZAc-400) 和 500 °C (ZAc-500) 下制备了 ackee 苹果荚的活性炭。ZAc-500 的表面积和孔体积分别为 812.79 m2/g 和 0.387 cm3/g，而 ZAc-400 的表面积和孔体积分别为 321.01 m2/g 和 0.15 cm3/g。因此，ZAc-500 显示出比 ZAc-400 更好的物理化学性质和更多的多孔结构。在 ZAc-400 和 ZAc-500 的表面均观察到 -OH、-CH、C=C 和 CO 的存在。ZAc-500 在去除亚甲蓝 (MB) 方面的性能优于 ZAc-400。MB 在 ZAc-400 和 ZAc-500 上的吸附最好通过 Langmuir 等温线（R2 ≥ 0.91）和准二级动力学模型（qe、exp 和 qe、cal 的闭合值（ZAc-500 和 49.96 和 50.2，ZAc-500 和ZAc-400 分别为 48.99 和 51.2）。