摘要:通过静态吸附和动态实验研究了U(Ⅵ)在黏性土壤中加入Fe^0与未加Fe^0的吸附量和迁移速度。静态结果表明:加入Fe^0使黏性土壤的吸附量、最大吸附量都大干未加Fe^0的黏性土壤;通过180d的土柱动态迁移实验,U(VI)在加入Fe^0的土柱中迁移了3cm;而在未加Fe^0的土柱中迁移了5cm。因此,加入Fe^0使U(Ⅵ)在核废料处置场天然屏障中的迁移速度降低,因而也减缓了铀污染源进入地下水的风险,使地球化学屏障更安全。
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