| 摘要 |
<p>PROCESS FOR THE REMOVAL OF RADIUM FROM ACIDIC SOLUTIONS CONTAINING SAME The invention is a process for the removal of radium from acidic aqueous solutions. In one aspect, the invention is a process for removing radium from an inorganic-acid solution. The process comprises contacting the solution with coal fly ash to effect absorption of the radium on the ash. The raduimcontaining ash then is separated from the solution. The process is simple, comparatively inexpensive, and efficient. High radium-distribution coefficients are obtained even at room temperature. Coal fly ash is an inexpensive, acid-resistant, high-surface-area material which is available in large quantities throughout the United States. the invention is applicable, for example, to the recovery of 226Ra from nitric acid solutions which have been used to leach radium from uranium-mill tailings.</p> |
