Given the plentiful uranium resources within the ocean, seawater uranium recovery holds significant importance for facilitating sustainable nuclear power development. There has been extensive research involving biochar materials for seawater uranium recovery. Existing biochar materials, on the other hand, exist primarily as powders, which are difficult to recover from use. Besides, traditional amidoxime-based adsorbents exhibited low uranium extraction rate, thus greatly hindering their practical application. In this study, a biochar sphere loaded with polyamidoxime (PAO) is prepared by using carbonized mycelium and PAO, designated as PAO-BS, in order to extract the uranium efficiently and quickly. Benefited from the ultrahigh porosity, hydrophilicity and water permeability, PAO-BS shows outstanding the adsorption efficiency of uranium. In comparison to other amidoxime-based adsorbents, the PAO-BS material demonstrates a remarkable extraction capacity of 211.35 mg g⁻¹ in simulated seawater with an initial uranium concentration of 16 ppm, implying the high efficiency of functional group utilization in PAO-BS. Collectively, these results indicate that the rapid and highly effective recovery of uranium from natural seawater using PAO-BS has considerable potential.

鉴于海洋中丰富的铀资源，海水铀回收对于促进核电可持续发展具有重要意义。人们对用于海水铀回收的生物炭材料进行了广泛的研究。另一方面，现有的生物炭材料主要以粉末形式存在，很难从使用中回收。此外，传统的偕胺肟基吸附剂的铀提取率较低，极大地阻碍了其实际应用。在本研究中，为了高效、快速地提取铀，利用碳化菌丝体和PAO制备了负载聚酰胺肟（PAO）的生物炭球，命名为PAO-BS。得益于超高的孔隙率、亲水性和透水性，PAO-BS表现出出色的铀吸附效率。在初始铀浓度为 16 ppm 的模拟海水中为^{-1 ，这意味着 PAO-BS 中官能团的利用效率很高。}总的来说，这些结果表明使用 PAO-BS 从天然海水中快速高效地回收铀具有相当大的潜力。