Removal of Radioactive Compounds from Organic Liquid Waste

Abstract

We examined removal efficiency of radioactivity from radioactive organic liquid waste by active charcoal or by salting out. Hydrophilic organic liquid was treated by active charcoal. More than 90% of radioactivity of radioiodine in hydrophilic organic liquid was removed by powdered active charcol packed in a paper bag. Hydrophobic organic liquid was treated by salting out with aqueous saturated NaCl solution and the removal percentage (%) of radioactivity of hydrophilic radiolabeled compound and vaporizable decomposition products in hydrophobic organic liquid was more than 90%, however that of hydrophobic radiolabeled compound was only 6.1%. Radioactivity in saturated NaCl after salting out was efficiently removed by active charcoal packed in a paper bag.