Taleei Mohammad Milad, Karbalaei Ghomi Narjessadat, Jozi Seyed Ali
Department of Chemical Engineering, Faculty of Engineering, North Tehran Branch, Islamic Azad University, Tehran, Iran.
Department of Chemical Industries, Faculty of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran.
Bull Environ Contam Toxicol. 2019 Jan;102(1):134-139. doi: 10.1007/s00128-018-2495-1. Epub 2018 Nov 19.
This research has been carried out for assessing phytoremediation of contaminated soils with 4 concentrations of arsenic by three plants, namely Vetiver grass (Vetiveria zizanioides), Chara algae (Chara vulgaris) and Water hyacinth (Hyacintus orientalis). The experimental results showed that at least two sampling times were significantly different. In addition, at least two plants were also significantly different in terms of percentages of total arsenic that were removed from the soil of the pots, as well as significant interactions between plant and arsenic concentrations. The results obtained from the thermodynamic studies show that, obtained by zero Gibbs free-energy, the process reached an equilibrium on the 60th day of the experiment, and, in fact, the adsorption of arsenic after the 60th day would be negligible.
本研究旨在评估三种植物，即香根草（Vetiveria zizanioides）、轮藻（Chara vulgaris）和凤眼莲（Hyacintus orientalis）对四种砷浓度污染土壤的植物修复效果。实验结果表明，至少有两个采样时间存在显著差异。此外，在从盆栽土壤中去除的总砷百分比方面，至少有两种植物也存在显著差异，并且植物与砷浓度之间存在显著相互作用。热力学研究结果表明，通过零吉布斯自由能获得的结果显示，该过程在实验的第60天达到平衡，实际上，第60天后砷的吸附量可忽略不计。
