UO2 2+ Ion Capture Enhanced with SiO2-based Compound: Insights into Kinetic, Thermodynamics, and Transport Analysis

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-06 DOI:10.2174/0115734110299710240528074433

M. Al‐Anber, Neda’a Al-Adaileh, M. Zaitoun, I. Al-Momani, D. Sobola, A. K. Hijazi, Suresh Sagadevan

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引用次数: 0

Abstract

A fabricated silica gel, SiO2-(1-(bis(2-aminoethyl)amino)-3-(silyl)propane-2-ol), SiO2-BAEASP, has successfully enhanced the capture of UO22+ ions from water in an unprecedented study. The reported studies examine the removal of uranyl ions, specifically focusing on the efficiency, selectivity, and cost-effectiveness of traditional removal methods including various adsorbents, nanomaterials, and functionalized surfaces. The primary objective of this study is to investigate the capturing capabilities of SiO2-BAEASP for aqueous uranium (VI) ions through batch sorption techniques. Several key parameters affecting sorption, including pH, initial concentration, temperature, and dosage, were meticulously controlled to gain insights into the capturing process's thermodynamic and kinetic aspects and determine the mechanisms involved. The equilibrium of the capturing process was observed to occur within just 5 to 10 minutes under a variety of conditions. The maximum capturing capacity of uranium (VI) ions into SiO2-BAEASP is found to be ca. 99% under the experimental conditions of pH = 5 - 7, Ci = 50 mg L-1, T = 55 °C, dosage = 2 g L-1, and 80 rpm. The sorption behavior of U(VI) ions on SiO2-BAEASP followed the Langmuir isotherm model (R2 ≈ 1), indicating favorable (Rl < 0.02) and spontaneous sorption of ΔG =  39.874 to 49.079 kJ mol-1. The motivation for the sorption process was attributed to the chemisorption of U(IV) ions via amino active sites, forming an inner complex sphere of the general form SiO2-BAEASP-U(VI). This finding was supported by the pseudo-second-order kinetic model (R2 ≈ 1), which provided insights into the rate constant and sorption capacities. The obtained information could potentially be utilized to develop a technology utilizing new materials of SiO2-BAEASP for catching uranium ions from water or for peaceful reuse applications. Overall, this study adds to the existing body of knowledge on water treatment, filling a notable gap in the literature and paving the way for further research and development of innovative materials for the removal of uranyl ions and other heavy metal contaminants from water sources.

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用二氧化硅基化合物增强对 UO2 2+ 离子的捕获：动力学、热力学和传输分析透视

一项史无前例的研究成功提高了对水中 UO22+ 离子的捕获能力。所报道的研究考察了铀酰离子的去除情况，特别关注传统去除方法（包括各种吸附剂、纳米材料和功能化表面）的效率、选择性和成本效益。本研究的主要目的是通过批量吸附技术研究 SiO2-BAEASP 对水体中铀（VI）离子的捕获能力。我们对影响吸附的几个关键参数（包括 pH 值、初始浓度、温度和用量）进行了细致的控制，以深入了解捕获过程的热力学和动力学方面，并确定其中涉及的机制。在各种条件下，只需 5 到 10 分钟就能达到捕获过程的平衡。在 pH = 5 - 7、Ci = 50 mg L-1、T = 55 °C、用量 = 2 g L-1 和 80 rpm 的实验条件下，铀（VI）离子在 SiO2-BAEASP 中的最大捕获量约为 99%。U(VI) 离子在 SiO2-BAEASP 上的吸附行为遵循 Langmuir 等温线模型（R2 ≈ 1），表明 ΔG =  39.874 至 49.079 kJ mol-1 是有利的（Rl < 0.02）和自发的吸附。吸附过程的原因是 U(IV)离子通过氨基活性位点进行化学吸附，形成了一般形式为 SiO2-BAEASP-U(VI) 的内部复合球。这一发现得到了伪二阶动力学模型（R2 ≈ 1）的支持，该模型提供了对速率常数和吸附能力的深入了解。所获得的信息可用于开发一种利用 SiO2-BAEASP 新材料从水中捕集铀离子或用于和平再利用的技术。总之，这项研究补充了现有的水处理知识体系，填补了文献中的一个显著空白，为进一步研究和开发用于去除水源中铀离子和其他重金属污染物的创新材料铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.