铁氰化钴/ZIF-67/腐殖质凝胶复合材料对废水中铯离子的去除效果

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-10 DOI:10.1016/j.jwpe.2025.107752

Hao Fang , Lu Yang , Jie Ni , Shanshan Feng , Wenhao Jia , Na Li , Xiaoyi Ma , Zhengwei Zhou , Yao Zhang , Sheng Feng

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引用次数: 0

摘要

本研究开发了一种创新的吸附剂-氰化钴/ZIF-67/老化垃圾腐殖质土气凝胶（PBA/ZIF-67/AARH气凝胶），专门用于有效去除放射性废水中的铯离子（Cs）。气凝胶的最大吸附量可达51.92 mg/g，即使在含有其他离子和溶解有机物（DOM）的复杂水环境中也能保持优异的Cs吸附性能。实验结果表明，当PBA/ZIF-67/AARH气凝胶用量为0.01 g， pH值为5时，PBA/ZIF-67/AARH气凝胶的吸附效果最好。吸附量为29.75±0.5 mg/g。同时，PBA/ZIF-67/AARH气凝胶具有良好的再生稳定性。经过5次吸附-解吸循环后，吸附量为20.1±0.3 mg/g， Cs去除率保持在84.5±0.5%。PBA/ZIF-67/AARH气凝胶也具有较大的比表面积，达到30.7950 m2/g。实验分析表明，Cs的去除过程符合Langmuir吸附模型和拟二级动力学，揭示了吸附效率的关键机制，包括离子交换、官能团络合和交联的协同效应。本研究为高效去除Cs提供了新的解决方案，为今后在污染水处理技术中的应用奠定了坚实的理论和实践基础。它在环境保护方面具有巨大潜力，并对人类健康产生深远影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A cobalt ferricyanide/ZIF-67/composted humus gel composite for improved cesium ion removal from wastewater

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A cobalt ferricyanide/ZIF-67/composted humus gel composite for improved cesium ion removal from wastewater

This study developed an innovative adsorbent—cobalt ferrocyanide/ZIF-67/aged garbage humus soil aerogel (PBA/ZIF-67/AARH aerogel)—specifically designed for the effective removal of cesium ions (Cs) from radioactive wastewater. The aerogel exhibited a maximum adsorption capacity of up to 51.92 mg/g, maintaining excellent Cs adsorption performance even in complex aquatic environments that contain other ions and dissolved organic matter (DOM). The experimental results showed that the adsorption effect of PBA/ZIF-67/AARH aerogel was the best when the dosage of PBA/ZIF-67/AARH aerogel was 0.01 g and pH value was 5. The adsorption capacity was 29.75 ± 0.5 mg/g. At the same time, PBA/ZIF-67/AARH aerogel has good regeneration stability. After five sorption-desorption cycles, the adsorption capacity is 20.1 ± 0.3 mg/g, and the Cs removal rate remains at 84.5 ± 0.5%. The PBA/ZIF-67/AARH aerogel also has a large specific surface area, reaching 30.7950 m²/g. Experimental analyses indicated that the Cs removal process aligns with both the Langmuir adsorption model and pseudo-second-order kinetics, revealing key mechanisms for adsorption efficiency, including ion exchange, functional group complexation, and the synergistic effects of cross-linking. This research provides a novel solution for the efficient removal of Cs, establishing a solid theoretical and practical foundation for future applications in pollution water treatment technologies. It holds significant potential for environmental protection and profound implications for human health.

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies