碱式碳酸锌吸附剂对天然海水中铀的吸附

本文实验结果表明:1.吸附剂中的铀浓度与所使用的天然海水的含铀量存在如下关系:C=8.51×10-1(u*)0.49.2.当吸附剂的用量基本保持不变时,随着通过吸附柱海水量的增加,吸附剂的吸铀量、吸附剂中的铀浓度以及吸铀后天然海水中剩余的铀浓度不断增加;而铀的回收率不断减少;分配系数随着通过吸附柱海水量的增加而减少至一定值之后,又稍有回升.     

ADSORPTION ACTION OF BASIC ZINC CARBONATE ADSORBENT ON URANIUM IN NATURAL SEAWATER

1. The adsorption action of basic zinc carbonate adsorbent on uranium in natural seawater can be expressed with the following formula of adsorption isotherm:C=k(U*)n = 8.51× 10-1(U*)0.49,where C is the concentration of uranium on adsorbent; U* is content of uranium in natural seawater employed.2. when the quantity of basic zinc carbonate adsorbent (T) is constant, with the increase of natural seawater quantity through the adsorption column (G), also increased are the adsorption content of uranium of the adsorbent (U), the concentration of uranium on the adsorbent (C) and the concentration of residual uranium (C0*) in natural seawater after adsorbing uranium, while the rate of recovery of uranium (R) is decreased. With the increase of (G) the coefficient of distribution (Kd) decreases to a certain value and then a little rises again.     

海水中铀与碱式碳酸锌的反应级数及活化能

目前国外对碱式碳酸锌吸附海水中铀的报导较少,对其吸附海水中铀的反应级数及活化能测定的报导尚未见到。本文试图用三颈瓶反应器及分光光度法,测定海水中铀与碱式碳酸锌的反应级数及活化能,并获得较满意的实验结果。