Recycling waste polymer packaging materials as effective active carbon porous materials for uranium removal from commercial phosphoric acid

IF 1.4 3区 化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR Radiochimica Acta Pub Date : 2023-11-30 DOI:10.1515/ract-2023-0165
Saber Ibrahim, Ahmed M. Masoud, Mahmoud M. El-Maadawy, Hager Fahmy, Mohamed Taha
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Abstract

Plastic packaging waste is considered a serious threat to the environment due to its non-biodegradable nature. Transforming plastic waste into active carbons using pyrolysis methods could be a valuable option to solve the challenge of plastic waste. Synthesized active carbon was differentiated using zeta potential, particle size, SEM, BET, and DSC. This study also investigates the use of obtained active carbons for U(VI) removal from commercial phosphoric acid. The kinetics of adsorption were found to follow the pseudo-second-order model and intra-particle diffusion as one of the controlling mechanisms. Langmuir, and Freundlich, isotherms were employed to explore the equilibrium data. Furthermore, thermodynamic investigations revealed that uranium uptake is an endothermic, feasible, and spontaneous process. The present study concludes that plastic waste-based activated carbon could be employed as a low-cost alternative to commercial activated carbon for uranium removal from phosphoric acid and the production of green fertilizers.
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回收废旧高分子包装材料作为工业磷酸中除铀的有效活性炭多孔材料
塑料包装废弃物由于其不可生物降解的性质,被认为是对环境的严重威胁。利用热解方法将塑料垃圾转化为活性炭可能是解决塑料垃圾挑战的一个有价值的选择。通过zeta电位、粒度、SEM、BET和DSC对合成的活性炭进行了表征。本研究还探讨了所得活性炭在工业磷酸中脱除U(VI)的应用。吸附动力学遵循伪二阶模型,颗粒内扩散是控制机理之一。采用Langmuir等温线和Freundlich等温线来研究平衡数据。此外,热力学研究表明,铀的吸收是一个吸热的、可行的、自发的过程。本研究表明,塑料垃圾活性炭可以作为一种低成本的商业活性炭替代品,用于磷酸中铀的去除和绿色肥料的生产。
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来源期刊
Radiochimica Acta
Radiochimica Acta 化学-核科学技术
CiteScore
2.90
自引率
16.70%
发文量
78
审稿时长
6 months
期刊介绍: Radiochimica Acta publishes manuscripts encompassing chemical aspects of nuclear science and technology.
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