Cesium Immobilization in Soil by Ball-Milling Treatment with Nanometallic Ca/CaO Additive
Cesium Immobilization in Soil by Ball-Milling Treatment with Nanometallic Ca/CaO Additive
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DOI：
10.1061/(asce)hz.2153-5515.0000151
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Srinivasa Reddy Mallampati;Y. Mitoma;T. Okuda;S. Sakita;Mitsunori Kakeda
中科院分区：
文献类型：
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作者：
Srinivasa Reddy Mallampati;Y. Mitoma;T. Okuda;S. Sakita;Mitsunori Kakeda
摘要本工作评估球磨处理铯（Cs）污染土壤的修复。固定化效率从56.4%，在没有处理的情况下增加到89.9%，91.5%，97.7%，和96.4%，分别当土壤球磨30，60，和120分钟，。然而，除了纳米钙/CaO和NaH 2 PO 4的固定化效率增加到约96.4%相比，单独球磨，即使当研磨时间减少到60分钟。实际上，与添加Ca/CaO和NaH 2 PO 4，Cs的可浸出部分减少在土壤中经过很短的研磨时间。这些有希望的结果表明，球磨可以被视为适用于修复的铯污染土壤在干燥和无水条件。这种处理方法不需要昂贵的试剂，并且不产生废气。它只需要电力和廉价的市售试剂。该处理工艺是一种环境友好的去污染技术。
AbstractThis work assessed ball-milling treatment for remediation of cesium (Cs)-contaminated soil. The immobilization efficiency increases from 56.4% in the absence of treatment to 89.9, 91.5, 97.7, and 96.4% when the soil is ball milled for 30, 60, and 120 min, respectively. However, the addition of nanometallic Ca/CaO and NaH2PO4 increased the immobilization efficiency to approximately 96.4% compared with ball milling alone, even when the milling time was decreased to 60 min. Actually, with the addition of Ca/CaO and NaH2PO4, the leachable fraction of Cs was reduced in the soil after a short milling time. These promising results suggest that ball milling can be regarded as applicable for the remediation of cesium-contaminated soil in dry and water-free conditions. This treatment method requires no expensive reagent and does not generate exhaust gases. It requires only electricity with cheap and commercially available reagents. This treatment process is an environmentally friendly depollution technique.