Shells of apricot kernels have taken chosen to fabricate the activated black carbon to eliminate the basic dye (methylene blue) from aqueous solutions. The results show the effects of various working conditions counting initial dye concentration (0–25 mg/L), adsorbent dose (0.1–3 g/L), temperature (20–45°C) and pH (2–12) on the uptake of methylene blue were investigated in this experiment-lab study. The adsorption of cationic dye favoured at low temperatures near to the neutral and acids pH for the aqueous solution. Three models have been employed to describe the experimental data for the adsorption isotherm: Langmuir, Freundlich, and Temkin equations. Langmuir isotherm model shows the best results, the thermodynamic parameters such as ΔG, ΔH, and ΔS for the adsorption of methylene blue. The elimination kinetics of methylene blue on black carbon treated at 600oC have been examined by using the pseudo-first-order, pseudo-second-order model equations and intra-particle diffusion, and the pseudo-second-order model was found to define the adsorption process better than the pseudo-first-order equation.

中文翻译：

---

使用杏仁壳的黑碳吸附亚甲基蓝的动力学和等温线模型

选择杏仁壳来制造活性炭以消除水溶液中的碱性染料（亚甲蓝）。结果显示了计算初始染料浓度 (0–25 mg/L)、吸附剂剂量 (0.1–3 g/L)、温度 (20–45°C) 和 pH (2–12) 的各种工作条件对在本实验实验室研究中研究了亚甲蓝的吸收。阳离子染料在接近中性和酸性 pH 值的低温下有利于水溶液的吸附。已采用三种模型来描述吸附等温线的实验数据：Langmuir、Freundlich 和 Temkin 方程。Langmuir 等温线模型显示了最佳结果，即吸附亚甲基蓝的热力学参数 ΔG、ΔH 和 ΔS。