Method for adsorbing uranyl ions in uranium-bearing wastewater

The invention provides a method for adsorbing uranyl ions in uranium-bearing wastewater. According to the method, nanometer magnetic cobalt-manganese spinel is adopted as an adsorbent, on the conditions that the reaction temperature ranges from 80 DEG C to 130 DEG C, and the pH of the wastewater ranges from 5 to 9, the uranyl ions in the uranium-bearing wastewater are adsorbed to the solid nanometer magnetic cobalt-manganese spinel, and then the uranyl ions are separated from the wastewater. The nanometer magnetic cobalt-manganese spinel can adsorb the sexivalence uranyl ions very well, the maximum adsorption quantity can reach 3,200 milligrams per gram, and the adsorbing effect of the nanometer magnetic cobalt-manganese spinel is ten times or more that of a traditional inorganic adsorbent. 本发明提供一种吸附含铀废水中铀酰离子的方法，所述方法包括使用一种纳米级磁性钴锰尖晶石为吸附剂，在反应温度为80～130℃，废水pH值为5～9的条件下，将含铀废水中的铀酰离子吸附至固态的所述纳米级磁性钴锰尖晶石上，而使得铀酰离子与废水分离。该纳米级磁性钴锰尖晶石对六价铀酰离子具有很好的吸附性能，最大吸附量可以到达3200mg/g，使用该吸附剂的吸附效果比传统无机吸附剂的吸附效果大10倍以上。