Nigar Erturk Trade Vocational High School, 27590 Gaziantep, Turkey.
Mater Sci Eng C Mater Biol Appl. 2013 Jul 1;33(5):2821-6. doi: 10.1016/j.msec.2013.03.009. Epub 2013 Mar 14.
The objective of this research paper is to assess the biosorption potential of almond shell residues for methyl orange dye. The pseudo-second-order kinetic model described the dye biosorption process with a good fitting. The relationship between the pseudo-second-order model constants and the biosorption performance was also evaluated. The equilibrium data fit well with the Langmuir isotherm model presenting that the biosorption was the monolayer coverage of dye on the biosorbent and the homogeneity of active sites for dye binding on the biosorbent surface. Based on the Langmuir model, a single-stage batch biosorber was also designed to predict the biosorbent mass for certain percentage dye removal. Besides, the standard Gibbs free energy change was also calculated to define the nature of biosorption process. These results revealed that the utilization of almond shell residues as dye biosorbent could be an interesting option from both environmental and economic point of view.
本研究论文的目的是评估杏仁壳残余物对甲基橙染料的吸附潜力。准二级动力学模型很好地描述了染料的吸附过程。还评估了准二级模型常数与吸附性能之间的关系。平衡数据很好地符合朗缪尔等温线模型，表明吸附是染料在吸附剂上的单层覆盖，以及染料在吸附剂表面结合的活性位点的均一性。基于朗缪尔模型，还设计了单级间歇式生物吸附器，以预测一定百分比染料去除所需的生物吸附剂质量。此外，还计算了标准吉布斯自由能变化，以定义吸附过程的性质。这些结果表明，从环境和经济的角度来看，利用杏仁壳残余物作为染料生物吸附剂可能是一个有趣的选择。
