Adsorption Mechanism Study of Radionuclide 60Co by Purified and α-Fe2O3-Supported Bentonite from Radioactive Solution

被引：9

作者：

Achour, Souad ^{[1
,2
]}

Amokrane, Samira ^{[1
]}

Chegrouche, Salah ^{[2
]}

Guedioura, Bouzid ^{[2
]}

Nibou, Djamel ^{[1
]}

机构：

[1] Univ Sci & Technol Houari Boumediene, Lab Mat Technol, BP 32, Algiers, Algeria

[2] Atom Energy Commiss, Nucl Res Ctr Draria, BP 43, Algiers 16050, Algeria

来源：

ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING | 2022年 / 47卷 / 05期

关键词：

Adsorption; Nuclear wastewater; A-Fe2O3/Bentonite; Co-60; Kinetic study; IONIC-STRENGTH; SORPTION; REMOVAL; COBALT; EQUILIBRIUM; PH; NANOPARTICLES; BIOSORPTION; DIFFUSION; FAUJASITE;

D O I：

10.1007/s13369-021-05570-2

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The present work aimed to study the performance of bentonite purified (BMP-Na) and supported (alpha-Fe2O3/BMB) in the adsorption of Co-60 from radioactive solution. The adsorbents were characterized by XRD, Mossbauer, SEM, EDS and gamma-Spectrometry. Kinetics and equilibrium models were evaluated for the adsorption process including Boyd's film-diffusion models. The experimental results showed that the adsorption reaction was adjustable to the pseudo-second order and controlled by the intra-particle diffusion mechanism. The experimental modeling data and the equilibrium study of the adsorption followed the Langmuir model. The values of the thermodynamic parameters have shown that the adsorption process was endothermic, spontaneous and favored at high temperatures.

引用

页码：5629 / 5645

页数：17

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