Abstract This study analyzed the capability of two species to take up metals from gold mine tailing storage facility seepage in a constructed wetland with horizontal subsurface flow. Naturally populated Typha domingensis (cattail) and introduced Chrysopogon zizanioides (vetiver) were sampled on a regular basis in two experimentation cycles; a monoculture of T. domingensis in the first cycle and a mixed culture of T. domingensis and C. zizanioides in the second. Corresponding water samples were taken from the inlet and outlet sections of the system. Metals were analyzed in both sets of samples. Seepage water from the tailing storage facility had a high content of metals, characterized by large fluctuations depending on the ore type being processed at a particular time and hence no clear removal patterns could be discerned. After 75 days' growth, T. domingensis exhibited an above-ground biomass production of 12.30 to 14.18 g per plant, higher than C. zizanioides which was only 6.65 g per plant. T. domingensis revealed an average bioaccumulation factor of 7, 5, 293, 1997, 413, 225 and 583 for As, Co, Cu, Mn, Ni, Pb and Zn, respectively, whilst C. zizanioides exhibited bioaccumulation factors of 6, 2, 278, 503, 228 and 1184 for As, Co, Cu, Mn, Pb and Zn respectively. However, the translocation factor found in C. zizanioides was higher compared to T. domingensis. Due to the higher biomass production, standing stocks of As, Co, Cr, Cu, Mn, Ni, Pb and Zn were 3, 7, 4, 7, 14, 7, 5, times higher in T. domingensis than in C. zizanioides. Therefore, T. domingensis could be considered as a promising alternative for gold mine tailing seepage phytoremediation, whilst C. zizanioides revealed very low growth rates and showed adaptation difficulties.

中文翻译：

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在人工湿地处理金矿尾矿储存设施渗漏时，自发生长的香蒲吸收金属，并引入了Chrysopogon zizanioides

摘要 本研究分析了两种物种在具有水平地下流的人工湿地中从金矿尾矿储存设施渗流中吸收金属的能力。在两个实验周期中定期对自然生长的香蒲（香蒲）和引入的 Chrysopogon zizanioides（香根草）进行采样；在第一个循环中使用 T. domingensis 的单一培养，在第二个循环中使用 T. domingensis 和 C. zizanioides 的混合培养。相应的水样取自系统的入口和出口部分。对两组样品中的金属进行了分析。尾矿储存设施的渗出水金属含量高，其特点是在特定时间处理的矿石类型波动较大，因此无法辨别出明确的去除模式。经过75天的成长，T. domingensis 的地上生物量产量为每株 12.30 至 14.18 g，高于 C. zizanioides，每株仅 6.65 g。T. domingensis 对 As、Co、Cu、Mn、Ni、Pb 和 Zn 的平均生物累积因子分别为 7、5、293、1997、413、225 和 583，而 C. zizanioides 的生物累积因子分别为 6、2 、 278、 503、 228 和 1184 分别为 As、Co、Cu、Mn、Pb 和 Zn。然而，与 T. domingensis 相比，在 C. zizanioides 中发现的易位因子更高。由于生物质产量较高，As、Co、Cr、Cu、Mn、Ni、Pb 和 Zn 的常备库存在 T. domingensis 中是 C. domingensis 的 3、7、4、7、14、7、5 倍。齐扎尼奥德斯。因此，T. domingensis 可以被认为是金矿尾矿渗流植物修复的一种有前途的替代品，而 C.