Study on preparation of a pizza-like attapulgite-based composite membrane and its performance on methylene blue and ciprofloxacin removal

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2024-11-13 DOI:10.1016/j.seppur.2024.130521

Ting Zhang, Yang Liu, Jingjing Zhang, Jiaojiao Qiao, Xiaohui Yang, Tingting Li, Yi Wang

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Abstract

In this study, attapulgite (ATP) was made to unfolded in two-dimension on the surface of graphene oxide (GO) and metal oxides were loaded on it as active substances to prepare a multifunctional membrane material (Fe-Cu/ATP-GO) through an innovative pizza-like preparation method. The fabrication process of this composite membrane has undergone rigorous optimization to ensure optimal performance. In order to get insights into its structural and compositional features, the composite membrane was thoroughly investigated by XRD, FTIR, SEM, BET analysis, XPS, and TG, which showed ATP was uniformly dispersed on the surface of GO membrane and both Fe and Cu were successfully and uniformly loaded on the surface of ATP-GO membrane. The application of the Fe-Cu/ATP-GO membrane in treating wastewater contaminated with methylene blue (MB) or ciprofloxacin (CIP) showed over 90 % removal ratio of MB and over 70 % removal ratio of CIP after 10 min dynamic treatment experiments under optimal conditions, revealed its exceptional ability to effectively eliminate organic contaminants from water. Further mechanistic studies have shed light on the multifaceted treatment mechanisms employed by the composite membrane, including filtration, adsorption, and catalytic oxidation, etc. These mechanisms synergistically contribute to the membrane’s remarkable performance in removing refractory organics from water.

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薄饼状阿托品基复合膜的制备及其去除亚甲基蓝和环丙沙星的性能研究

在这项研究中，通过一种创新的披萨状制备方法，将阿塔蓬石（ATP）在氧化石墨烯（GO）表面二维展开，并在其上负载金属氧化物作为活性物质，制备出一种多功能膜材料（Fe-Cu/ATP-GO）。这种复合膜的制备过程经过了严格的优化，以确保达到最佳性能。为了深入了解其结构和组成特征，研究人员通过 XRD、FTIR、SEM、BET 分析、XPS 和 TG 对该复合膜进行了深入研究，结果表明 ATP 均匀地分散在 GO 膜的表面，而铁和铜也成功、均匀地负载在 ATP-GO 膜的表面。将铁-铜/ATP-GO 膜应用于处理亚甲基蓝（MB）或环丙沙星（CIP）污染的废水，在最佳条件下经过 10 分钟的动态处理实验后，MB 的去除率超过 90%，CIP 的去除率超过 70%，显示了其有效去除水中有机污染物的卓越能力。进一步的机理研究揭示了复合膜所采用的多元处理机制，包括过滤、吸附和催化氧化等。这些机制协同作用，使该膜在去除水中难降解有机物方面表现出色。

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.