Michalska Karina, Heiermann Monika, Lühr Carsten, Meermann Björn, Pecenka Ralf, Schulz Andreas, Langhammer Nicole, Theuerl Susanne, Prochnow Annette
Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Max-Eyth-Allee 100, 14469, Potsdam, Germany.
Division 1.1 - Inorganic Trace Analysis, Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Straße 11, 12489, Berlin, Germany.
Sci Rep. 2025 Jun 20;15(1):20149. doi: 10.1038/s41598-025-05180-0.
Rewetting of peatlands requires the development of new biomass utilization pathways. The supply of strategic elements with key importance for the development of priority technologies, such as germanium (Ge), silicon (Si) and rare earth elements, from fenland plants is one option. To provide a first estimation of the potential, concentrations of strategic elements were determined in nine biomass samples covering typical fenland vegetation in northeast Germany. Subsequently, a simplified estimation of potential revenue from strategic element recovery was made. The analysed plant species can be classified as high or intermediate Si plant accumulators with highest contents of more than 16.0 g Si kg dry mass (DM) in sedges and common reeds. Ge concentrations were lower with reed canary grass containing the highest amounts of 465.3 µg Ge kg DM. Simultaneous acquisition of Ge and Si could provide higher total element yields and revenues of up to 500 $ ha. In contrast, the potentials for supplying rare earth elements appeared to be very low, with common reed containing the highest sum of rare earth elements of 437.4 µg kg DM. Biomass from rewetted fenlands is capable of accumulating strategic elements. More knowledge is required to understand the factors affecting their accumulation.
泥炭地的再湿润需要开发新的生物质利用途径。从湿地植物中获取对优先技术发展至关重要的战略元素，如锗（Ge）、硅（Si）和稀土元素，是一种选择。为了初步评估其潜力，测定了德国东北部涵盖典型湿地植被的九个生物质样本中战略元素的浓度。随后，对战略元素回收的潜在收益进行了简化估算。所分析的植物物种可分为高硅或中硅植物蓄积者，莎草和普通芦苇中硅含量最高，超过16.0克硅/千克干重（DM）。锗浓度较低，其中草芦含锗量最高，为465.3微克锗/千克干重。同时获取锗和硅可提供更高的总元素产量，收益高达500美元/公顷。相比之下，供应稀土元素的潜力似乎非常低，普通芦苇中稀土元素总量最高，为437.4微克/千克干重。再湿润湿地的生物质能够积累战略元素。需要更多知识来了解影响其积累的因素。
