EFFECT OF SEDIMENT TYPE, TEMPERATURE AND COLLOIDS ON THE TRANSFER OF RADIONUCLIDES FROM WATER TO SEDIMENT

被引：23

作者：

BIRD, GA

EVENDEN, WG

机构：

[1] Whiteshell Laboratories, Pinawa

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 1994年 / 22卷 / 03期

关键词：

Clay - Colloids - Mass transfer - Sediments - Soils - Thermal effects - Water;

D O I：

10.1016/0265-931X(94)90083-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of natural organic (O), sand (S) and clay, (C) sediments, temperature (5, 15 and 25-degrees-C) and colloids on the transfer of Co-60, Zn-65, Cs-134 and natural U-238 from freshwater to sediments was investigated in the laboratory using lake sediment/water columns. Sediment type had a significant effect on the loss of these radionuclides from water. Loss of Co-60, Zn-65 and U-238 from water was generally in the order O > C > S sediment. Loss of Cs-134 from water was in the order C > O > S sediment. Generally the loss of the radionuclides from water was greater at higher temperatures and was in the order Co-60 > Zn-65 > Cs-134 > U-238. The presence of colloids slowed the loss of the radionuclides from water. Transfer rates of 0.014-0.077 d-1 for Co-60, 0.010-0.110 d-1 for Zn-65, 0.015-0.092 d-1 for Cs-134 and 0.001-0.084 d-1 for U-238 were measured depending on experimental conditions and were in general agreement with the range of values reported from field studies.

引用

页码：219 / 242

页数：24

共 56 条

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