Department of the Environment, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran.
Department of Physics, College of Basic Sciences, Hamedan Branch, Islamic Azad University, Hamedan, Iran.
Environ Sci Pollut Res Int. 2019 Sep;26(27):27905-27914. doi: 10.1007/s11356-019-05997-z. Epub 2019 Jul 25.
The feedstock from cinnamon (CI) and cannabis (CA) were used for providing biochar at different temperatures using the pyrolysis method (300, 400, and 600 °C) as appropriate adsorbents for removing Pb(II) ions. The properties of materials were examined with varied techniques. The BET surface area of CI600 and CA600 was higher compared with others. The adsorption efficiency of Pb(II) ions relies on initial Pb(II) concentration, pH, adsorbent dose, equilibrium time, and temperature. The adsorption isotherms of Pb(II) ions were assessed via Langmuir adsorption isotherm and the pseudo-second-order model and electrostatic interaction became visible to play the main role in the adsorption process.
肉桂（CI）和大麻（CA）的原料分别在 300、400 和 600°C 下通过热解方法生成生物炭，作为去除 Pb(II) 离子的合适吸附剂。采用多种技术对材料性能进行了检测。与其他材料相比，CI600 和 CA600 的 BET 比表面积更高。Pb(II) 离子的吸附效率取决于初始 Pb(II) 浓度、pH 值、吸附剂剂量、平衡时间和温度。通过 Langmuir 吸附等温线和准二级动力学模型评估了 Pb(II) 离子的吸附等温线，静电相互作用在吸附过程中起主要作用。
