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首页> 外文会议>International biohydrometallurgy symposium >pH and Soil Additive-Depending Uptake of Various Metals and Metalloids by Helianthus tuberosus from a Uranium Containing Test Field Site
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pH and Soil Additive-Depending Uptake of Various Metals and Metalloids by Helianthus tuberosus from a Uranium Containing Test Field Site

机译：含铀试验田中菊芋对各种金属和类金属的pH和土壤添加剂依赖性吸收

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In the recent decades phytoremediation became an emerging technology for the stabilization and rehabilitation of slightly to medium heavy metal contaminated sites, as well as of mining sites. In previous own studies the general suitability of Helianthus tuberosus under slightly acidic soil pH and increased heavy metal (HM) concentrations was successfully tested. Phytoremediation was here investigated as a suitable remediation method for the stabilization of a U mining site near Ronneburg in Thuringia/ Germany. In the experiments presented here, the uptake of heavy metals/ radionuclides (HM/R) of H. tuberosus from test field substrate with different soil additives and mineral fertilizers under variation of soil pH was tested in pot and real field experiments. Compost was added in different masses (40 - 120 t/ha), and CaO was added in several experiments. The test field soil without additives (pH 4.65) was applied as control experiment. Good growth yields for tubers and shoot biomass were achieved for the addition of compost and CaO, but also for N-fertilization. The highest metal concentrations were achieved at the test field site for Al with 2.1 g/kg in roots at an N-fertilized soil of pH 4.6, furthermore 2.4 g/kg Fe, 0.66 g/kg Mn, 0.9 mg/kg U in the roots and 1.9 g/kg Mn in shoots (transfer factor 2.8). Good metal transfer factors were also achieved for Zn, Cd and Co. As a conclusion from these results, H. tuberosus is suited as a plant for phytostabilization and phytoextraction at such a site and for the subsequent winning of bioenergy. It was growing successful under the rough soil and climatic conditions at this test field site.
机译：在最近的几十年中，植物修复已成为一种用于稳定和修复轻度到中度重金属污染场地以及采矿场地的新兴技术。在以前的研究中，已成功测试了向日葵在弱酸性土壤pH和重金属（HM）浓度增加下的一般适用性。在这里，对植物修复进行了研究，以作为一种稳定化方法，以稳定德国图林根州Ronneburg附近的U矿区。在此处介绍的实验中，在盆栽和实地实验中测试了在土壤pH值变化的情况下，使用不同的土壤添加剂和矿物肥料从试验田基质中吸收的结核杆菌重金属/放射性核素（HM / R）。以不同的质量（40-120吨/公顷）添加堆肥，并在多个实验中添加CaO。将不含添加剂（pH 4.65）的试验田土壤用作对照实验。通过添加堆肥和CaO，以及进行氮肥施用，可获得块茎和枝条生物量的良好生长。在pH 4.6的N肥土中，铝的根部含量为2.1 g / kg，铝达到了最高的金属浓度;此外，在土壤中，铝的含量为2.4 g / kg的铁，0.66 g / kg的锰，0.9 mg / kg的铀。根和嫩芽中1.9 g / kg Mn（转移因子2.8）。从锌，镉和钴也获得了良好的金属转移因子。从这些结果可以得出结论，马铃薯在此位置适合用作植物稳定化和植物提取的植物，并随后获得了生物能。在该试验场现场，它在粗糙的土壤和气候条件下成功生长。

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