Facile synthesis of zeolite-based MOF composites for cobalt ion separation from simulated wastewater

IF 6.3 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-08-31 DOI:10.1016/j.jtice.2025.106381

Ting Pan, Shuyuan Liu, Qi Zhou, Li Yu, Yue Wang, Xiayuan Zhu, Ruotian Li, Ying Wang, Xiaoqin Pu, Guoyuan Yuan

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Abstract

Background

With the acceleration of industrialization, heavy metal pollution has attracted worldwide attention. As an important heavy metal, cobalt is widely used in fields such as batteries, alloys, and catalysts. However, due to environmental issues and the toxicity of heavy metals, it is crucial to separate cobalt ions from wastewater.

Methods

Zeolitic (Ze) MOF architectures were fabricated through solvent-mediated coordination with aluminosilicate substrates, demonstrating enhanced cobalt(II) sequestration efficacy in synthetic wastewater remediation. Ze serves as a stable, low-cost molecular sieve, providing structural support and Al³⁺ ions for MOF formation. The composites, including Ze-MOFs(Al), Ze-MOFs(Al)-NH₂, and Ze-MOFs(Al)-(OH)₂, were characterized using XRD, FT-IR, SEM, and BET analysis. Their adsorption performance was evaluated under varying conditions, with the adsorption mechanisms explored in detail.

Significant findings

Ze-MOFs(Al) exhibited the highest adsorption capacity (228.3 mg/g) and selective adsorption ability in mixed solutions of Co(II), Li(I), K(I), Mg(II), and Ca(II), underscoring its potential for wastewater treatment. Research on fixed-bed dynamic adsorption revealed adherence to the Thomas model, showing a dynamic adsorption capacity (208.7 mg/g) nearly equivalent to the theoretical static capacity, suggesting a diffusion-driven process. This research provides valuable insights into the development of low-cost, efficient materials for cobalt ion separation from wastewater.

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模拟废水中钴离子分离用沸石基MOF复合材料的简易合成

随着工业化进程的加快，重金属污染问题引起了全世界的广泛关注。钴作为一种重要的重金属，广泛应用于电池、合金、催化剂等领域。然而，由于环境问题和重金属的毒性，从废水中分离钴离子至关重要。方法通过与铝硅酸盐基质的溶剂介导配位制备沸石（Ze） MOF结构，在合成废水修复中显示出增强的钴（II）固载效果。Ze作为一种稳定、低成本的分子筛，为MOF的形成提供了结构支撑和Al³+离子。采用XRD、FT-IR、SEM和BET等手段对复合材料进行了表征，包括：Ze-MOFs（Al）、Ze-MOFs(Al)- nh2和Ze-MOFs(Al)- OH - 2。在不同条件下对其吸附性能进行了评价，并对吸附机理进行了详细探讨。在Co（II）、Li(I)、K(I)、mg （II）和Ca（II）的混合溶液中，sse - mofs （Al）表现出最高的吸附能力（228.3 mg/g）和选择性吸附能力，显示了其在废水处理中的潜力。固定床动态吸附实验符合Thomas模型，动态吸附量为208.7 mg/g，与理论静态吸附量基本相当，表明其为扩散驱动过程。这项研究为开发低成本、高效的废水钴离子分离材料提供了有价值的见解。

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

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.