Radiation synthesis and characterization of starch-acrylic acid-nanohalloysite composite for the removal of Co(II) ions from aqueous solutions

被引：8
|
作者：
Elsharma, Emad M. [1 ]
Abdelmonem, Islam M. [1 ]
Emara, Amr M. [1 ]
机构：
[1] Egyptian Atom Energy Author, Hot Labs Ctr, Nucl Chem Dept, Inshas, Cairo 13759, Egypt
来源：
APPLIED RADIATION AND ISOTOPES | 2023年 / 191卷
关键词：
Radiation synthesis; Cobalt removal; Radioactive wastewater; HEAVY-METALS; WASTE-WATER; ADSORPTION; CHITOSAN; BEHAVIOR; SORPTION; COBALT; CO-60; NANOCOMPOSITE; RADIONUCLIDES;
D O I：
10.1016/j.apradiso.2022.110558
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
In this study, gamma rays were used as an initiator to prepare starch-acrylic acid/nanohalloysite, P(Stc-AA/ NHal) composite for the removal of Co(II) from aqueous solutions. The characteristic peaks of P(Stc-AA/NHal) composite was confirmed by Fourier transform infrared spectroscopic analysis (FTIR). The morphological structure was examined using a scanning electron microscope (SEM). Differential thermal analysis (DTA) and thermogravimetric analysis (TGA) were also used to characterize the composite and demonstrate its high thermal stability. Using a batch sorption technique and 60Co as a radiotracer, the P(Stc-AA/NHal) composite was evaluated for Co(II) ions removal from aqueous solutions. The effect of pH, contact time, metal ion concentration, and temperature on Co(II) ions sorption were studied. The kinetic data of adsorption fit accurately with the pseudo-second-order adsorption model. Finally, the equilibrium adsorption results fitted the Langmuir isotherm model very well. The highest adsorption capacity measured was 103.6 mg g-1
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页数：10
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