Synthesis and characterization of nanostructured mesoporous alumina embedded PES beads for uranium extraction from aqueous radioactive waste

IF 1.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Bulletin of Materials Science Pub Date : 2024-04-09 DOI:10.1007/s12034-024-03202-7

BHAGYASHREE K KHARWANDIKAR, KRISHAN KANT SINGH, A K TYAGI

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Abstract

The removal of uranium from radioactive wastewater is an important step in nuclear waste management. In this study, a solid adsorbent was developed utilizing mesoporous alumina encapsulated within polyethersulfone (PES) beads for effective uranium extraction. The encapsulation process enhances the stability and selectivity of the material, while the mesoporous structure of alumina enables controlled mass transfer and optimal uranium adsorption. These composite beads were synthesized and thoroughly characterized, and their performance was evaluated for uranium removal from simulated radioactive wastewater. The synthesized materials have been characterized by FTIR, TGA–DSC, SEM, EDX and BET surface area analysis techniques to get complete insight into morphology, functionality and topography of materials. Batch adsorption experiments revealed rapid uranium uptake, reaching equilibrium within a short time frame. The maximum adsorption capacity was found to be ~18 mg g⁻¹. These findings establish the potential of mesoporous alumina-encapsulated PES beads as a promising candidate for uranium extraction, offering a valuable contribution to the advancement of radioactive waste treatment technologies.

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纳米结构介孔氧化铝嵌入聚醚砜珠的合成与表征，用于从放射性废物水溶液中提取铀

从放射性废水中去除铀是核废料管理的一个重要步骤。本研究利用包裹在聚醚砜（PES）珠内的介孔氧化铝开发了一种固体吸附剂，用于有效提取铀。封装过程增强了材料的稳定性和选择性，而氧化铝的介孔结构则实现了可控的传质和最佳的铀吸附。对这些复合珠子进行了合成和全面表征，并对其从模拟放射性废水中去除铀的性能进行了评估。傅立叶变换红外光谱、TGA-DSC、扫描电镜、EDX 和 BET 表面积分析技术对合成材料进行了表征，以全面了解材料的形态、功能和形貌。批量吸附实验表明，材料能快速吸附铀，并在短时间内达到平衡。最大吸附容量约为 18 毫克 g-1。这些发现证实了介孔氧化铝包封聚醚砜珠作为铀萃取候选材料的潜力，为放射性废物处理技术的进步做出了宝贵贡献。

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来源期刊

Bulletin of Materials Science 工程技术-材料科学：综合

CiteScore

3.40

自引率

5.60%

发文量

209

审稿时长

11.5 months

期刊介绍： The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.