MOE Key Laboratory of Space Applied Physics & Chemistry, Shaanxi Key Laboratory of Macromolecular Science &Technology, School of Natural & Applied Sciences, Northwestern Polytechnical University, Xi'an, 710072, PR China.
Department of Botany, Government Post Graduate College Kohat, 26000, Khyber-Pakhtunkhwa, Pakistan.
J Environ Manage. 2018 May 1;213:109-118. doi: 10.1016/j.jenvman.2018.02.003. Epub 2018 Feb 23.
Here, we report a pyrolyzed guinea fowl manure-derived biochar (GFM-BC) and cattle manure-derived biochar (CTM-BC) and their use as adsorbent for the removal of divalent copper from aqueous media was evaluated. The BCs physical and chemical properties were characterized by Scanning electron microscopy (SEM), Elemental dispersive x-ray analysis (EDX), Fourier transform infrared microscopy (FTIR) and thermo gravimetric analysis (TGA). The results presented that the BCs obtained higher content were quite effective for Cu (II) removal with maximum capacities of 43.60 and 44.50 mg g for GFM-BC and CTM-BC, respectively. From simulation of experimental data with different adsorption isotherms and kinetics models it was found that the adsorption of both BCs was adequately fitted by Freundlich adsorption model and pseudo-second order kinetic model, respectively. Thermodynamic parameters suggested that the adsorption of Cu (II) onto both BCs was feasible, spontaneous and exothermic under evaluated parameters. Thus, the biomass used in this study proved to be effective adsorbents for the removal of Cu (II) from aqueous media.
在这里，我们报告了一种热解的珍珠鸡粪衍生生物炭（GFM-BC）和牛粪衍生生物炭（CTM-BC），并评估了它们作为吸附剂从水介质中去除二价铜的用途。通过扫描电子显微镜（SEM）、元素分散 X 射线分析（EDX）、傅里叶变换红外显微镜（FTIR）和热重分析（TGA）对 BC 的物理和化学性质进行了表征。结果表明，BC 获得了较高的含量，对 Cu（II）的去除非常有效，GFM-BC 和 CTM-BC 的最大容量分别为 43.60 和 44.50mg/g。通过不同吸附等温线和动力学模型的实验数据模拟发现，BC 对 Cu（II）的吸附均能很好地用 Freundlich 吸附模型和拟二级动力学模型拟合。热力学参数表明，在所评估的参数下，Cu（II）在两种 BC 上的吸附是可行的、自发的和放热的。因此，本研究中使用的生物质被证明是从水介质中去除 Cu（II）的有效吸附剂。
