Co - Al-LDH@PU膜活化过氧单硫酸盐高效去除盐酸四环素

IF 3.2 4区工程技术 Q2 CHEMISTRY, MULTIDISCIPLINARY

Korean Journal of Chemical Engineering Pub Date : 2025-05-24 DOI:10.1007/s11814-025-00486-1

Xilin Liu, Fuwei Yang, Zhiqian Yao, Xuan Wang, Pengfei Liu, Jiayin Li, Hu Zhou

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引用次数: 0

摘要

在载体上固定化活化剂是解决活化剂在深度氧化过程中回收难和二次污染的有效策略。在本研究中，采用水热原位生长技术将钴铝层状双氢氧化物（活化剂）固定在PU膜载体（Co - Al-LDH@PU膜）上，形成可回收的过氧单硫酸盐（PMS）活化剂。所制备的Co - Al-LDH@PU膜表现出极好的激活PMS去除盐酸四环素的能力。在pH 5.5条件下，用Co - Al-LDH@PU膜（3 × 3 cm2）和1.6 mM PMS在30 min内去除97.20%的TC （30 mg L−1）。通过淬火试验证实单重态氧（1O2）是主要的活性氧。机理研究表明，Co - Al-LDH@PU膜表面Co2+/Co3+的氧化还原循环是PMS活化的关键。同时，Co - Al-LDH@PU膜具有理想的可重复使用性和通用性。

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Activation of Peroxymonosulfate by Co–Al-LDH@PU Membrane for Efficient Removal of Tetracycline Hydrochloride

Immobilizing the activator on the carrier is an effective strategy to solve the difficult recovery and secondary pollution of activator in advanced oxidation process. In this study, cobalt–aluminum-layered double hydroxide (activator) was immobilized on a PU membrane carrier (Co–Al-LDH@PU membrane) by a hydrothermal in situ growth technique to form a recyclable peroxymonosulfate (PMS) activator. The as-prepared Co–Al-LDH@PU membrane exhibited an excellent ability to activate PMS for the removal of tetracycline hydrochloride (TC). 97.20% of TC (30 mg L⁻¹) was eliminated with Co–Al-LDH@PU membrane (3 × 3 cm²) and 1.6 mM PMS at pH 5.5 in 30 min. Singlet oxygen (¹O₂) was verified as dominant reactive oxygen species responsible for TC removal via quenching tests. Mechanism investigation suggested that the redox cycle of Co²⁺/Co³⁺ on the surface of Co–Al-LDH@PU membrane was crucial for PMS activation. Meanwhile, Co–Al-LDH@PU membrane displayed the ideal reusability and versatility.

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来源期刊

Korean Journal of Chemical Engineering 工程技术-工程：化工

CiteScore

4.60

自引率

11.10%

发文量

310

审稿时长

4.7 months

期刊介绍： The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.