A Polymer-Functionalized GO Composite Prepared through Pickering Emulsion Polymerization for Selective Removal of Zr from Acidic Solutions

被引：0

作者：

Vignesh, Murugesan Veera ^{[1
,2
]}

Suneesh, Asokan Sudha ^{[1
]}

Selvan, Balakrishnan Robert ^{[1
]}

Jain, Ashish ^{[1
]}

Madapu, Kishore Kumar ^{[3
]}

Ramanathan, Nagarajan ^{[1
,2
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Mat Chem & Met Fuel Cycle Grp, Kalpakkam 603102, Tamil Nadu, India

[2] Indira Gandhi Ctr Atom Res, Kalpakkam 603102, Tamil Nadu, India

[3] Indira Gandhi Ctr Atom Res, Surface & Sensors Studies Div, Mat Sci Grp, Kalpakkam 603102, India

来源：

CHEMISTRYSELECT | 2024年 / 9卷 / 23期

关键词：

Graphene oxide; Hummers' oxidation; Metal fuel reprocessing; Pickering emulsion polymerization; Zr; GRAPHENE OXIDE; SOLVENT-EXTRACTION; FISSION-PRODUCTS; AQUEOUS-SOLUTION; METALLIC FUEL; ADSORPTION; ZIRCONIUM; ACTINIDES; KINETICS; EXCHANGE;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

For the selective removal of Zr from PUREX originated acidic aqueous waste of metallic fuel, an adsorbent based on graphene oxide (GO)-polystyrene composite functionalized with amide functional group was developed. Improved Hummers' oxidation of graphite powder was utilized to produce GO and the amide moiety was linked to GO via chemical functionalization. The amide modified GO was converted to GO-polystyrene composite microspheres through pickering emulsion assisted route. FT-IR, XRD and SEM analyses were employed to characterize the composite adsorbent. The adsorption behavior of Zr was examined under varying experimental conditions. Adsorption was modeled using several adsorption and kinetic models. The Zr adsorption capacity calculated based on the Langmuir adsorption isotherm and Pseudo-first-order models exhibited a close agreement. Adsorption studies using simulated U-Pu-Zr originated PUREX aqueous waste signifies the superior Zr-adsorption capacity (similar to 50 mg g(-1)), even in the presence of other possible interfering elements present in SHLLW.

引用

页数：13