Sorption of radionuclides on oxidized charcoals
Sorption of radionuclides on oxidized charcoals
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氧化木炭对放射性核素的吸附
作者：
B. Ershov;G. L. Bykov;A. Seliverstov
研究了氧化炭（OCC）对Cs{sup +}、Sr{sup 2+}、U（VI）、Am（III）和Pu（IV）的吸附。OCC是用空气对炭化木材进行温和氧化制备的。在静态和动态条件下，对含有示踪剂量（{大约}10{sup -5} Ci/l）的放射性核素溶液的吸附进行了研究。OCC对Cs{sup +}、Am（III）和Pu（IV）具有高度选择性。在炭化木材氧化2 ~ 3 h （K{sub d} = 5400 cm{sup 3}/g）制备的样品中，Cs{sup +}的吸附量最大。锶几乎不被吸收，而U（VI）的吸收比Pu（IV）和Am（III）差得多。
The sorption of Cs{sup +}, Sr{sup 2+}, U(VI), Am(III), and Pu(IV) and oxidized charcoal (OCC) is investigated. The OCC was prepared by mild oxidation of carbonized wood by air. The sorption was studied under static and dynamic conditions from solutions containing tracer amounts ({approximately}10{sup -5} Ci/liter) of the radionuclides. The OCC is highly selective for Cs{sup +}, Am(III), and Pu(IV). The maximal sorption of Cs{sup +} is observed on samples prepared by oxidizing carbonized wood for 2-3 h (K{sub d} = 5400 cm{sup 3}/g). Strontium is practically not sorbed whereas U(VI) is sorbed much more poorly than Pu(IV) and Am(III).