Study on the leaching performance and transport model of Sr<sup>2+</sup>, Cs<sup>+</sup> in magnesium phosphate cement

Fengle DAI; Hongtao WANG; Shihao ZHANG; Ming XUE; Jianhua DING; Zichao JIANG

doi:10.11889/j.0253-3219.2016.hjs.39.080501

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Study on the leaching performance and transport model of Sr²⁺, Cs⁺ in magnesium phosphate cement

更新时间：2021-05-24

- Study on the leaching performance and transport model of Sr²⁺, Cs⁺ in magnesium phosphate cement
- NUCLEAR TECHNIQUES Vol. 39, Issue 8, Article number: 080501(2016)
- 作者机构：
  
  后勤工程学院化学与材料工程系重庆 401311
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;Supported by Natural Science Foundation of Chongqing City, China
- DOI：10.11889/j.0253-3219.2016.hjs.39.080501
  CLC： TU526
- Received：31 December 2015，
  
  Revised：22 March 2016，
  
  Published：2016-08
- 稿件说明：
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Fengle DAI, Hongtao WANG, Shihao ZHANG, et al. Study on the leaching performance and transport model of Sr²⁺, Cs⁺ in magnesium phosphate cement[J]. Nuclear techniques, 2016, 39(8): 080501
DOI：

Fengle DAI, Hongtao WANG, Shihao ZHANG, et al. Study on the leaching performance and transport model of Sr²⁺, Cs⁺ in magnesium phosphate cement[J]. Nuclear techniques, 2016, 39(8): 080501 DOI： 10.11889/j.0253-3219.2016.hjs.39.080501.

摘要

采用磷酸镁水泥（Magnesium phosphate cement

MPC）对核素Sr

、Cs

进行固化，对固化体中Sr

、Cs

的浸出性能进行了研究，并根据Fick第二定律建立了适用于磷酸镁体系的Sr

、Cs

迁移模型，对核素Sr

、Cs

在磷酸镁水泥固化体中的迁移进行预测。结果表明，磷酸镁水泥可以有效固化Sr和Cs，使核素Sr

、Cs

在磷酸镁水泥固化体中浸出率较低；建立的一维衰变浸出模型可以有效地预测核素Sr

、Cs

在磷酸镁水泥固化体中的迁移规律。

Abstract

Background:

Magnesium phosphate cement (MPC) has a good application prospect in radioactive waste solidification for its good adsorption property of Sr and Cs which are the main elements in the middle and low level nuclear reactor waste.

Purpose:

This study aims to investigate the migration of radionuclides in MPC and build a transport model of Sr

in MPC.

Methods:

According to Fick's second law

the migration model of Sr

to predict the leaching behavior of Sr

was established by studying the leach abilities of Sr

and Cs

in MPC.

Results:

Sr and Cs can be effectively solidified by MPC

and the leaching rate of Sr

is low. Compared with Sr

has stronger migration ability in magnesium phosphate cement.

Conclusion:

The leaching behavior of Sr

immobilized in MPC can be predicted well by one-dimension decay migration model. In addition

the migration behavior of Sr

was predicted more accurately by the migration model.

关键词

Keywords

references

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Study on the leaching performance and transport model of Sr2+, Cs+ in magnesium phosphate cement

DOI：10.11889/j.0253-3219.2016.hjs.39.080501

摘要

Abstract

关键词

Keywords

references

Study on the leaching performance and transport model of Sr²⁺, Cs⁺ in magnesium phosphate cement