Effect of Environmental Conditions on Strontium Adsorption by Red Soil Colloids in Southern China

被引：6

作者：

Shao, Yang ^{[1
]}

Zhao, Yuanyuan ^{[1
,2
]}

Luo, Min ^{[1
]}

Zhao, Guifang ^{[1
]}

Xu, Diandou ^{[1
]}

Liu, Zhiming ^{[2
]}

Ma, Lingling ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst High Energy Phys, Div Nucl Technol & Applicat, Beijing 100049, Peoples R China

[2] Beijing Univ Chem Technol, Skate Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

PROCESSES | 2023年 / 11卷 / 02期

基金：

美国国家科学基金会;

关键词：

strontium (Sr2+); soil colloid; adsorption; China; IONIC-STRENGTH; ORGANIC-MATTER; HUMIC-ACID; PH; SR(II); COMPOSITE; SORPTION; REMOVAL; CARBON; TIME;

D O I：

10.3390/pr11020379

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The fate of radionuclides in the environment is attracting increased attention. The effect of various environmental effects on the adsorption behavior of the strontium ion (Sr2+) by red soil colloids in Southern China was studied by a series of batch experiments, and the adsorption mechanism was briefly investigated as well. With the increase in the solid-liquid ratio and the concentration of Sr2+, the adsorption efficiency increased gradually. The effect of pH and ionic strength on adsorption was strong, while temperature had little effect. The adsorption data fitted to the Langmuir model indicates that the process is monolayered and homogeneous. The thermodynamic parameters also show that the adsorption of Sr2+ on red soil colloids is a spontaneous and exothermic process. The aim of this work is to gain insight into the role of red soil colloids on the fate of radionuclides in the field.

引用

页数：11

共 41 条

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