A novel approach for the removal of radiocesium from aqueous solution by ZSM-5 molecular sieve

Xiaoqing Gao; Peng Zhang; Junqiang Yang; Xuejie Sun; Yi Fu; Keliang Shi; Zhifang Chai; Wangsuo Wu

doi:10.1016/j.apradiso.2018.05.019

A novel approach for the removal of radiocesium from aqueous solution by ZSM-5 molecular sieve

Appl Radiat Isot. 2018 Sep:139:231-237. doi: 10.1016/j.apradiso.2018.05.019. Epub 2018 May 21.

Authors

Xiaoqing Gao¹, Peng Zhang², Junqiang Yang³, Xuejie Sun³, Yi Fu³, Keliang Shi⁴, Zhifang Chai⁵, Wangsuo Wu⁶

Affiliations

¹ Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, 730000 Lanzhou, PR China; Environmental Monitor Center of Gansu Province, 730000 Lanzhou, PR China.
² Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, 730000 Lanzhou, PR China; Environmental Monitor Center of Gansu Province, 730000 Lanzhou, PR China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, 730000 Lanzhou, PR China; Institute of High Energy Physics, Chinese Academy of Sciences, 100049, China.
³ Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, 730000 Lanzhou, PR China.
⁴ Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, 730000 Lanzhou, PR China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, 730000 Lanzhou, PR China. Electronic address: [email protected].
⁵ Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, 730000 Lanzhou, PR China; Institute of High Energy Physics, Chinese Academy of Sciences, 100049, China.
⁶ Radiochemistry Lab, School of Nuclear Science and Technology, Lanzhou University, 730000 Lanzhou, PR China; Key Laboratory of Special Function Materials and Structure Design, Ministry of Education, Lanzhou University, 730000 Lanzhou, PR China. Electronic address: [email protected].

PMID: 29860200
DOI: 10.1016/j.apradiso.2018.05.019

Abstract

Finding an approach for pretreatment of radionuclides from contaminated water are interesting topics of research. In present work, the ZSM-5 molecular sieve was characterized with different techniques such as zeta potential, SEM, FT-IR and XRD to clarify the surface properties of sample and applied as a sorbent to concentrate and recover Cs(I) from aqueous solution. The effect of environmental conditions such as contact time, ionic strength, content of sorbent and solution pH on Cs(I) uptake were optimized using batch techniques. Different kinetic and isotherm models were utilized to evaluate the experimental data and the correlation parameters were obtained. Based on the sorption/desorption experiment, it can be deduced that the ZSM-5 molecular sieve has potential application for the rapid and quantitative recovery of radiocesium from wastewater.

Keywords: Concentration; Radiocesium; Recovery; Wastewater; ZSM-5 molecular sieve.